# description
DICOM Code Definitions (Coding Scheme Designator "DCM" Coding Scheme Version 2025.3.20250714

# purpose
This code system is published as part of FHIR in order to make the codes available to FHIR terminology services and so implementers can easily leverage the codes

# copyright
These codes are excerpted from Digital Imaging and Communications in Medicine (DICOM) Standard, Part 16: Content Mapping Resource, Copyright Â© 2011 by the National Electrical Manufacturers Association.

# concept[].definition
A device, process or method that produces annotations.

# concept[].definition
An acquisition device, process or method that measures autorefraction.

# concept[].definition
A device, process or method that stores images and other objects for a prolonged period of time.

# concept[].definition
An acquisition device, process or method that records images during angioscopy.

# concept[].definition
A device, process or method that produces assessments of the content of other instances, e.g., for quality or suitability.

# concept[].definition
An acquisition device, process or method that records audio.

# concept[].definition
An acquisition device, process or method that performs ultrasound bone densitometry.

# concept[].definition
An acquisition device, process or method that performs biomagnetic imaging.

# concept[].definition
An acquisition device, process or method that performs bone mineral densitometry by X-Ray, including dual-energy X-Ray absorptiometry (DXA) and morphometric X-Ray absorptiometry (MXA).

# concept[].definition
An image processing device, process or method that performs computer assisted detection or diagnosis.

# concept[].definition
An acquisition device, process or method that performs image capture, includes video capture.

# concept[].definition
An acquisition device, process or method that performs color flow Doppler.

# concept[].definition
An acquisition device, process or method that performs cinefluorography.

# concept[].definition
An acquisition device, process or method that performs imaging using a confocal microscope.

# concept[].definition
A device, process or method that performs computation as a service; includes radiotherapy planning.

# concept[].definition
An acquisition device, process or method that records images during culposcopy.

# concept[].definition
An acquisition device, process or method that performs computed radiography.

# concept[].definition
An acquisition device, process or method that records images during cystoscopy.

# concept[].definition
An acquisition device, process or method that performs computed tomography.

# concept[].definition
A device, process or method that produces CT device acquisition protocols.

# concept[].definition
An acquisition device, process or method that performs duplex Doppler.

# concept[].definition
An acquisition device, process or method that performs digital fluoroscopy.

# concept[].definition
An acquisition device, process or method that performs diaphanography.

# concept[].definition
An acquisition device, process or method that performs digital microscopy.

# concept[].definition
An acquisition device, process or method that performs imaging of the surface of the skin using epiluminescence microscopy.

# concept[].definition
A device, process or method that produces documents. i.e., representations of documents as images, whether by scanning or other means.

# concept[].definition
A device, process or method that digitizes hardcopy documents and imports them.

# concept[].definition
An acquisition device, process or method that performs digital subtraction angiography.

# concept[].definition
A department-based information system (for instance, Radiology or Laboratory) that provides functions related to the management of orders received from external systems or through the department system’s user interface. This definition matches that of the DSS/OF Actor in the IHE Scheduled Workflow (SWF) Profile.

# concept[].definition
An acquisition device, process or method that performs digital radiography.

# concept[].definition
An acquisition device, process or method that performs echocardiography.

# concept[].definition
An acquisition device, process or method that performs electrocardiography.

# concept[].definition
An acquisition device, process or method that performs electroencephalography.

# concept[].definition
An acquisition device, process or method that performs electromyography.

# concept[].definition
An acquisition device, process or method that performs electrooculography.

# concept[].definition
An acquisition device, process or method that performs cardiac electrophysiology.

# concept[].definition
An acquisition device, process or method that records images during endoscopy.

# concept[].definition
An acquisition device, process or method that performs fluorescein angiography.

# concept[].definition
A device, process or method that identifies features or landmarks used to establish spatial correlation between objects or frames of reference.

# concept[].definition
A device, process or method that performs film digitization.

# concept[].definition
An acquisition device, process or method that records images during fundoscopy.

# concept[].definition
An acquisition device, process or method that performs general microscopy.

# concept[].definition
A device, process or method that creates images to be printed as hard copy.

# concept[].definition
An acquisition device, process or method that records hemodynamic waveforms.

# concept[].definition
An acquisition device, process or method that performs intra-oral radiography.

# concept[].definition
A device, process or method that encodes calculations for an intraocular lens.

# concept[].definition
An acquisition device, process or method that performs intravascular optical coherence tomography

# concept[].definition
An acquisition device, process or method that performs intravascular ultrasound.

# concept[].definition
An acquisition device, process or method that performs keratometry.

# concept[].definition
A device, process or method that creates Key Object Selection objects.

# concept[].definition
An acquisition device, process or method that performs lensometry.

# concept[].definition
A device, process or method that performs procedure Logging; includes cath lab logging.

# concept[].definition
An acquisition device, process or method that records images during laparoscopy.

# concept[].definition
An acquisition device, process or method that performs laser surface scanning.

# concept[].definition
A device, process or method that produces data (models) for use in 3D manufacturing.

# concept[].definition
An acquisition device, process or method that performs magnetic resonance angiography.

# concept[].definition
A device, process or method that creates DICOM interchange media.

# concept[].definition
A device, process or method that retrieves and imports objects from Interchange Media.

# concept[].definition
An acquisition device, process or method that performs mammography.

# concept[].definition
An acquisition device, process or method that performs magnetic resonance imaging.

# concept[].definition
An acquisition device, process or method that performs magnetic resonance spectroscopy.

# concept[].definition
Instances need to be retrieved from relatively slow media such as optical disk or tape.

# concept[].definition
An acquisition device, process or method that performs nuclear medicine imaging.

# concept[].definition
An acquisition device, process or method that measures the axial length of the eye.

# concept[].definition
An acquisition device, process or method that uses an interferometric, non-invasive optical tomographic technique to image 2D slices and 3D volumes of tissue using visible and near visible frequencies.

# concept[].definition
Instances need to be retrieved by manual intervention.

# concept[].definition
An acquisition device, process or method that performs ophthalmic photography.

# concept[].definition
An acquisition device, process or method that measures corneal topography, corneal or retinal thickness, and other similar parameters that are typically displayed as maps.

# concept[].definition
An acquisition device, process or method that measures the refractive characteristics of the eye.

# concept[].definition
An acquisition device, process or method that performs tomography of the eye that is based on light and optical principles. Tomography based on other principles, such as ultrasound, is excluded.

# concept[].display
Ophthalmic Tomography B-scan Volume Analysis

# concept[].definition
An acquisition device, process or method that performs B-scan volume analysis of tomography images of the eye based on light and optical principles. Tomography based on other principles, such as ultrasound, is excluded.

# concept[].definition
An acquisition device, process or method that creates en face tomography images of the eye based on light and optical principles. Tomography based on other principles, such as ultrasound, is excluded.

# concept[].definition
An acquisition device, process or method that measures visual fields and perform visual perimetry.

# concept[].definition
An acquisition device, process or method that performs optical surface scanning.

# concept[].definition
An acquisition device, process or method that performs imaging by means of tissue excitation through the absorption of short light pulses and detection of the resultant acoustic emission.

# concept[].definition
A device, process or method that produces treatment plans, e.g., delivery instructions for RT.

# concept[].definition
A device or sensor measuring the orientation of the patient’s body.

# concept[].definition
A device, process or method that creates Presentation State objects.

# concept[].definition
Hard Copy Print Server; includes printers with embedded DICOM print server.

# concept[].definition
An acquisition device, process or method that performs positron emission tomography (PET).

# concept[].definition
An acquisition device, process or method that performs panoramic X-Rays.

# concept[].definition
An image processing device, process or method that creates Registration objects.

# concept[].definition
A device, process or method that produces waveforms of electrical signals from the patient’s respiratory system.

# concept[].definition
An acquisition device, process or method that performs radiofluoroscopy.

# concept[].definition
An acquisition device, process or method that performs radiographic imaging (conventional film/screen).

# concept[].definition
A device, process or method that delivers radiation therapy; includes linear accelerator, proton therapy.

# concept[].definition
A device, process or method that records radiotherapy dose.

# concept[].definition
An acquisition device, process or method that performs radiotherapy imaging; includes portal imaging.

# concept[].definition
A device, process or method that produces radiotherapy plans.

# concept[].definition
A device, process or method that records radiotherapy treatment records.

# concept[].definition
A device, process or method that produces Radiotherapy Structure Sets.

# concept[].definition
A device, process or method that produces mappings between image pixel values and some real-world values.

# concept[].definition
An image processing device, process or method that performs segmentation.

# concept[].definition
An acquisition device, process or method that performs slide microscopy.

# concept[].definition
A device, process or method that records relationships between stereometric image pairs.

# concept[].definition
A device, process or method that creates Structured Report documents.

# concept[].definition
An acquisition device, process or method that records subjective refraction.

# concept[].definition
An acquisition device, process or method that performs single-photon emission computed tomography (SPECT).

# concept[].definition
A device, process or method that applies, in an automated manner, a stain, or reagent, to microscopy slides in preparation for imaging.

# concept[].definition
A device, process or method that produces texture maps.

# concept[].definition
An acquisition device, process or method that performs thermography.

# concept[].definition
An acquisition device, process or method that performs ultrasound.

# concept[].definition
An acquisition device, process or method that measures visual acuity.

# concept[].definition
An acquisition device, process or method that measures videofluorography.

# concept[].definition
A device, process or method that digitizes video tape and imports it.

# concept[].definition
A networked computer equipped with a display and software for performing specific types of work, generally intended to be operated by a single user.

# concept[].definition
An acquisition device, process or method that performs X-Ray angiography.

# concept[].definition
An acquisition device, process or method that performs photography with an external camera.

# concept[].definition
A signal transmitted for the purpose of interchange of the current time, not specific to any source or methodology.

# concept[].definition
A signal that is generated for each detection of a heart beat.

# concept[].definition
A signal transmitted by the Inter-Range Instrumentation Group for the purpose of synchronizing time clocks.

# concept[].definition
A signal that indicates that X-Ray source has been activated for fluoroscopy use.

# concept[].definition
A signal that indicated that the X-Ray source has been activated for image recording.

# concept[].definition
An electrical signal derived from two electrodes.

# concept[].definition
An electrophysiological recording from the HIS nerve bundle.

# concept[].definition
An electrical signal from one electrode relative to an indifferent potential.

# concept[].definition
The voltage stimulus during cardiac pacing.

# concept[].definition
The power injected during RF ablation procedure.

# concept[].definition
Electrophysiological signals acquired using a multi-splined catheter each equipped with multiple electrodes.

# concept[].definition
Electrophysiological signals acquired using a steerable catheter.

# concept[].definition
A voltage measurement not otherwise specified.

# concept[].definition
A signal point that is 35% of the peak thermal cardiac output signal.

# concept[].definition
A signal point that is 70% of the peak thermal cardiac output signal.

# concept[].definition
The peak pressure of each heart beat in the atrium caused by the atrial contraction.

# concept[].definition
The average of several A wave pressure measurements.

# concept[].definition
An identified cardiac beat used in the determination of a measurement.

# concept[].definition
An identified cardiac beat not used in the determination of a measurement.

# concept[].definition
The average of several diastolic pressure measurements

# concept[].definition
The lowest pressure value excluding any undershoot artifact.

# concept[].definition
The moment at the end of the diastolic phase of the cardiac cycle.

# concept[].definition
The moment at the end of respiratory expiration.

# concept[].definition
The moment at the end of respiratory inspiration.

# concept[].definition
The maximum positive rate of change of pressure.

# concept[].definition
The maximum negative rate of change of pressure.

# concept[].definition
The average blood pressure value, generally over 2 or more seconds

# concept[].definition
The peak change in blood temperature during a thermal cardiac output measurement.

# concept[].definition
The moment respiratory expiration begins.

# concept[].definition
The moment of respiratory inspiration begins.

# concept[].definition
The first discernible blood temperature change following the injectate during a thermal cardiac output measurement.

# concept[].definition
The average of several systolic blood pressure measurements.

# concept[].definition
The highest systolic blood pressure value excluding any overshoot artifact

# concept[].definition
The peak pressure of each heart beat in the atrium caused by the filling of the atrium.

# concept[].definition
The average of several V wave pressure measurements.

# concept[].definition
The moment at which a heart valve closes.

# concept[].definition
The moment at which a heart valve opens.

# concept[].definition
The moment when RF ablation current is turned off.

# concept[].definition
The moment when RF ablation current is turned on.

# concept[].definition
The moment in the cardiac cycle when the HIS bundle nerves depolarize.

# concept[].definition
The surface electrocardiogram of the atrial contraction.

# concept[].definition
The first negative deflection of the electrocardiogram cause by ventricular depolarization.

# concept[].definition
The first positive deflection the electrocardiogram cause by ventricular depolarization.

# concept[].definition
The first negative deflection after the R wave.

# concept[].definition
The beginning of the atrial contraction.

# concept[].display
Start of atrial contraction (subsequent)

# concept[].definition
The beginning of the second atrial contraction of two consecutive beats.

# concept[].definition
The stimulation interval during cardiac stimulation first used in a pacing train.

# concept[].definition
The stimulation interval different from the first stimulation interval used in a pacing train.

# concept[].definition
A stimulation interval different from and subsequent to the second interval in a pacing train.

# concept[].definition
Describes a stimulation interval different from and subsequent to the third interval in a pacing train.

# concept[].definition
The electrocardiogram deflection caused by ventricular repolarization.

# concept[].definition
The peak pressure of each heart beat monitored in the atrium caused by the filling of the atrium.

# concept[].definition
The second V wave measurement of two consecutive beats.

# concept[].definition
A description of the physiological condition of the patient.

# concept[].definition
The exercise level during a progressive cardiac stress test.

# concept[].definition
A series of physiological challenges designed to progressively increase the work of the heart.

# concept[].definition
A subpart of a cardiac catheterization procedure

# concept[].definition
The subpart of a cardiac catheterization procedure in which a radio-opaque contrast medium is injected into the patient.

# concept[].definition
Physical changes administered to a patient in order to elicit an physiological response.

# concept[].definition
Enumeration of a subpart of a catheterization procedure.

# concept[].definition
A subpart of en electrophysiological procedure.

# concept[].definition
A means of defining a series of cardiac stimulation pulses.

# concept[].definition
Time for a median particle to travel from point of injection to point of detection.

# concept[].definition
The time constant of isovolumic pressure fall.

# concept[].definition
Maximum velocity of myocardial contractility.

# concept[].definition
Total time for the acquisition is shorter than cardiac cycle, no gating is applied.

# concept[].definition
Certain thresholds have been set for a gating window that defines the acceptance of measurement data during the acquisition.

# concept[].definition
Certain thresholds have been set for a gating window that defines the acceptance of measurement data after the acquisition.

# concept[].definition
There is a constant RR interval, which makes thresholding not required; see Cardiac Synchronization Technique (0018,9037).

# concept[].definition
Imaging after injection of tracer during increased cardiac workload or increased myocardial blood flow, achieved by either exercise or pharmacologic means.

# concept[].definition
Imaging after injection of additional tracer under resting conditions.

# concept[].definition
Imaging after allowing a moderate amount of time for tracer to move from its initial sites of uptake.Example: For Thallium imaging this would correspond to imaging 2-6 hours after injection.

# concept[].definition
Imaging after allowing an extended amount of time for tracer to move from its initial sites of uptake.Example: For Thallium imaging this would correspond to imaging more than 6 hours after injection.

# concept[].definition
Equipment that originally acquired the data stored within composite instances.

# concept[].definition
Equipment that has processed composite instances to create new composite instances.

# concept[].definition
Equipment that has modified existing composite instances (without creating new composite instances).

# concept[].definition
Equipment that has modified an existing composite instance to remove patient identifying information.

# concept[].definition
Equipment that has processed composite instances to create new composite instances by extracting selected frames from the original instance.

# concept[].definition
Equipment that has processed composite instances to create new composite instances by converting classic single frame images to enhanced multi-frame image, or vice versa and updating other instances to maintain referential integrity.

# concept[].definition
The sound of a human's speech, recorded during a procedure.

# concept[].definition
The voice of a device operator, recorded during a procedure.

# concept[].definition
The ambient sound recorded during a procedure, which may or may not include voice and other types of sound.

# concept[].definition
The Doppler waveform recorded as an audible signal.

# concept[].definition
A digitized signal from the patient arterial system collected through pulse oximetry or other means.

# concept[].definition
A digitized signal from the patient respiratory system representing respiration.

# concept[].definition
The occasion on which a procedure was performed on admission to a specialist unit.

# concept[].definition
The occasion on which a procedure was performed on discharge from hospital as an in-patient.

# concept[].definition
The occasion on which a procedure was performed on discharge from a specialist unit.

# concept[].definition
The occasion on which a procedure was performed immediately prior to non-surgical intervention. E.g, percutaneous angioplasty, biopsy.

# concept[].definition
The occasion on which a procedure was performed immediately after to non-surgical intervention. E.g, percutaneous angioplasty, biopsy.

# concept[].definition
The occasion on which a procedure was performed at the most recent outpatient visit.

# concept[].definition
The active or passive joint positioning during acquisition.

# concept[].definition
A physical force applied during acquisition.

# concept[].definition
Prior to voiding urine from the bladder.

# concept[].display
International Progressive Dog Breeders' Alliance

# concept[].definition
Evaluation of overall image quality as described in section 7.3.2 of .

# concept[].definition
Visual verification of sufficient grayscale resolution based on 8 and 10-bit markers as described in section 7.3.3 of .

# concept[].definition
Visual evaluation of luminance response using the TG18-CT test pattern as described in section 7.3.4 of .

# concept[].definition
Visual detection of luminance non-uniformities as described in section 7.3.5 of .

# concept[].definition
Visual verification of color uniformity as described in section 7.3.6 of .

# concept[].definition
Visual detection of defective pixels on dark (TG18-UN80) and bright (TG18-UN10) images as described in section 7.3.7 of .

# concept[].definition
Visual evaluation of veiling glare by looking at low contrast objects on 2 test patterns as described in section 7.3.8 of .

# concept[].definition
Visual evaluation of geometry, phase/clock correction and clipping as described in section 7.3.9 of .

# concept[].definition
Visual evaluation of viewing angle as described in section 7.3.10 of .

# concept[].definition
Visual evaluation of the appearance of clinical images as described in section 7.3.11 of .

# concept[].definition
AAPM TG18-QC Pattern used for evaluation of resolution, luminance, distortion, artifacts.See .

# concept[].definition
AAPM TG18-BR Pattern used for the evaluation of the display of low-contrast, fine-detail image structuresSee .

# concept[].definition
AAPM TG18-PQC Pattern used for evaluation of resolution, luminance, contrast transfer for prints.See .

# concept[].definition
AAPM TG18-CT Pattern used for evaluation of luminance response.See .

# concept[].definition
The 1st image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 2nd image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 3rd image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 4th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 5th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 6th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 7th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 8th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 9th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 10th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration series.See .

# concept[].definition
The 11th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 12th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 13th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 14th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 15th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 16th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 17th image in the AAPM TG18-LN8 set used for DICOM grayscale calibration.See .

# concept[].definition
The 18th image in the AAPM TG18-LN8- set used for DICOM grayscale calibration.See .

# concept[].definition
The 1st image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 2 nd image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 3rd image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 4th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 5th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 6th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 7th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 8th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 9th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 10th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 11th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 12th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 13th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 14th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 15th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 16th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 17th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The 18th image in the AAPM TG18-LN12 set used for DICOM grayscale calibration.See .

# concept[].definition
The AAPM TG18-UN10 Pattern used for evaluation of luminance and color uniformity, and angular response.See .

# concept[].definition
The AAPM TG18-UN80 Pattern used for evaluation of luminance and color uniformity, and angular response.See .

# concept[].definition
The AAPM TG18-UNL10 Pattern is the AAPM TG-18 UN10 Pattern with added defining lines.See .

# concept[].definition
The AAPM TG18-UNL80 Pattern is the AAPM TG-18 UN80 Pattern with added defining lines.See .

# concept[].definition
The AAPM TG18-AD Pattern used for visual evaluation of the reflection of ambient light from the display.See .

# concept[].definition
The AAPM TG18-MP Pattern used for evaluation of Luminance response (bit-depth resolution).See .

# concept[].definition
The AAPM TG18-RH10 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 horizontal lines at 10% luminance level.See .

# concept[].definition
The AAPM TG18-RH50 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 horizontal lines at 50% luminance level.See .

# concept[].definition
The AAPM TG18-RH89 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 horizontal lines at 89% luminance level.See .

# concept[].definition
The AAPM TG18-RV10 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 vertical lines at 10% luminance level.See .

# concept[].definition
The AAPM TG18-RV50 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 vertical lines at 50% luminance level.See .

# concept[].definition
The AAPM TG18-RV89 Pattern used for LSF-line spectra function-(1k and 2k) evaluation by 5 vertical lines at 89% luminance level.See .

# concept[].definition
The AAPM TG18-PX Pattern used for the assessment of display resolution.See .

# concept[].definition
The AAPM TG18-CX Pattern used to assess display resolution and resolution uniformity.See .

# concept[].definition
The AAPM TG18-LPH10 Pattern used to assess display resolution. This pattern has horizontal bars consisting of alternating single-pixel-wide lines across the faceplate of display. The lines have a 12% positive contrast against 10% background level of the maximum pixel value.See .

# concept[].definition
The AAPM TG18-LPH50 Pattern used to assess display resolution. This pattern has horizontal bars consisting of alternating single-pixel-wide lines across the faceplate of display. The lines have a 50% positive contrast against 10% background level of the maximum pixel value.See .

# concept[].definition
The AAPM TG18-LPH89 Pattern used to assess display resolution. This pattern has horizontal bars consisting of alternating single-pixel-wide lines across the faceplate of display. The lines have a 12% positive contrast against 89% background level of the maximum pixel value.See .

# concept[].definition
The AAPM TG18-LPV10 Pattern used to assess display resolution. This pattern has vertical bars consisting of alternating single-pixel-wide lines across the faceplate of display. The lines have a 12% positive contrast against 10% background level of the maximum pixel value.See .

# concept[].definition
The AAPM TG18-LPV50 Pattern used to assess display resolution. This pattern has vertical bars consisting of alternating single-pixel-wide lines across the faceplate of display. The lines have a 12% positive contrast against 50% background level of the maximum pixel value.See .

# concept[].definition
The AAPM TG18-LPV89 Pattern used to assess display resolution. This pattern has vertical bars consisting of alternating single-pixel-wide lines across the faceplate of display. The lines have a 12% positive contrast against 89% background level of the maximum pixel value.See .

# concept[].definition
The AAPM TG18-AFC Pattern used to assess display noise.See

# concept[].definition
The AAPM TG18-NS10 Pattern is AAPM TG18-RV10/RH10 with only difference being the absence of the single line at the center of the measurement area.See .

# concept[].definition
The AAPM TG18-NS50 Pattern is AAPM TG18-RV50/RH50 with only difference being the absence of the single line at the center of the measurement area.See .

# concept[].definition
The AAPM TG18-NS89 Pattern is AAPM TG18-RV89/RH89 with only difference being the absence of the single line at the center of the measurement area.See .

# concept[].definition
The TG18-GV Pattern used to assess display veiling.See .

# concept[].definition
The TG18-GVN Pattern used to assess display veiling. This pattern is identical to AAPM TG18-GV Pattern except that the large-diameter white circle is replaced with a black circle, creating a completely black pattern except for the presence of low-contrast targets.See .

# concept[].definition
The TG18-GQ Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GV except that is lacks the central low-contrast objects.See .

# concept[].definition
TG18-GQN Pattern used for the quantitative assessment of veiling glare. This pattern is identical to AAPM TG18-GQ Pattern except that the large-diameter white circle is replaced with a black circle, creating a completely black pattern except for the presence of low-contrast targets.See .

# concept[].definition
The TG18-GQB Pattern used for the quantitative assessment of veiling glare. This pattern is identical to AAPM TG18-GQ Pattern except eliminating the central black circle.See .

# concept[].definition
The TG18-GA03 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 3.See .

# concept[].definition
The TG18-GA05 Pattern This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 5.See .

# concept[].definition
The TG18-GA08 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 8.See .

# concept[].definition
The TG18-GA10 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 10.See .

# concept[].definition
The TG18-GA15 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 15.

# concept[].definition
The TG18-GA20 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 20.See .

# concept[].definition
The TG18-GA25 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 25.See .

# concept[].definition
The TG18-GA30 Pattern used for quantitative assessment of veiling glare. This pattern is identical to TG18-GQ except that the radius of the central black circle is varied as r = 30.See .

# concept[].definition
The AAPM TG18-CH Image is a reference anatomical PA chest image.See .

# concept[].definition
The AAPM TG18-KN Image is a reference anatomical knee image.See .

# concept[].definition
The AAPM TG18-MM1 Image is a reference anatomical mammogram image.See .

# concept[].definition
The AAPM TG18-MM2 Image is a reference anatomical mammogram image.See .

# concept[].definition
The IEC OIQ Pattern is used as an alternative to the TG18-QC Pattern.See .

# concept[].definition
The IEC ANG Pattern used for angular viewing evaluation.See .

# concept[].definition
The IEC GD Pattern used for geometrical image evaluation.See .

# concept[].definition
The IEC BN01 Pattern is used as an alternative to the TG18-LN-01 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN02 Pattern is used as an alternative to the TG18-LN-02 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN03 Pattern is used as an alternative to the TG18-LN-03 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN04 Pattern is used as an alternative to the TG18-LN-04 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN05 Pattern is used as an alternative to the TG18-LN-05 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN06 Pattern is used as an alternative to the TG18-LN-06 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN07 Pattern is used as an alternative to the TG18-LN-07 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN08 Pattern is used as an alternative to the TG18-LN-08 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN09 Pattern is used as an alternative to the TG18-LN-09 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN10 Pattern is used as an alternative to the TG18-LN-10 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN11 Pattern is used as an alternative to the TG18-LN-11 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN12 Pattern is used as an alternative to the TG18-LN-12 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN13 Pattern is used as an alternative to the TG18-LN-13 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN14 Pattern is used as an alternative to the TG18-LN-14 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN15 Pattern is used as an alternative to the TG18-LN-15 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN16 Pattern is used as an alternative to the TG18-LN-16 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN17 Pattern is used as an alternative to the TG18-LN-17 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
The IEC BN18 Pattern is used as an alternative to the TG18-LN-18 Pattern, to avoid the use of a cone or baffle with LCDs.See .

# concept[].definition
Test image "Bild 2" for the gray-scale reproduction of imaging devices.See .

# concept[].definition
Test image "Bild 3" for the geometrical imaging properties of imaging devices.See .

# concept[].definition
Test image "Bild 5" for displaying the spatial and contrast resolution as well as the line structure of imaging devices.See .

# concept[].definition
An alternative to AAPM TG18-UN80, specified at 100% of maximum pixel value.

# concept[].definition
A standard display test pattern.See .A pattern is available at .

# concept[].definition
A Display Device that displays images on a Cathode Ray Tube.

# concept[].definition
A Display Device that displays images on a Liquid Crystal Display.

# concept[].definition
A Display Device that displays images on a Plasma Display.

# concept[].definition
A Display Device that displays images on an Organic Light Emitting Diode based display.

# concept[].definition
A Display Device that projects images on a surface from behind using a Digital Light Processing Projector.

# concept[].definition
A Display Device that projects images on a surface from in front using a Digital Light Processing Projector.

# concept[].definition
A Display Device that projects images on a surface from behind using a Cathode Ray Tube.

# concept[].definition
A Display Device that projects images on a surface from in front using a Cathode Ray Tube.

# concept[].definition
A Display Device that projects images on a surface from an unspecified direction using an unspecified means.

# concept[].definition
The work item task is to prepare a report that contains the interpretation of an imaging study.

# concept[].definition
There will be no more work items scheduled.

# concept[].definition
The procedure to read DICOM instances from DICOM interchange media, coerce identifying Attributes into the local namespace if necessary, and make the instances available.

# concept[].definition
Digitization of pages of a paper document (Units may be specified as Pages, Documents).

# concept[].definition
Importation of DICOM Composite Instances.

# concept[].definition
A device that connects using the USB hard drive interface. These may be USB-Sticks, portable hard drives, and other technologies.

# concept[].definition
Email and email attachments used as a media for data transport.

# concept[].definition
CD-R, CD-ROM, and CD-RW media used for data transport.

# concept[].definition
DVD, DVD-RAM, and other DVD formatted media used for data transport.

# concept[].definition
Media that comply with the Compact Flash standard.

# concept[].definition
Media that comply with the Multi-media Card standard.

# concept[].definition
Media that comply with the Secure Digital Card standard.

# concept[].definition
URI Identifier for network or other resource, see RFC3968.

# concept[].definition
Audit event: Application Activity has taken place.

# concept[].definition
Audit event: Storage of DICOM Instances has begun.

# concept[].definition
Audit event: DICOM Instances have been created, read, updated, or deleted -audit event.

# concept[].definition
Audit event: Storage of DICOM Instances has been completed.

# concept[].definition
Audit event: Entire Study has been deleted.

# concept[].definition
Audit event: Data has been exported out of the system.

# concept[].definition
Audit event: Data has been imported into the system.

# concept[].definition
Audit event: System has joined or left network.

# concept[].definition
Audit event: Order has been created, read, updated or deleted.

# concept[].definition
Audit event: Patient Record has been created, read, updated, or deleted.

# concept[].definition
Audit event: Procedure Record has been created, read, updated, or deleted.

# concept[].definition
Audit event: Security Alert has been raised.

# concept[].definition
Audit event: User Authentication has been attempted.

# concept[].definition
Audit event: Application Entity has started.

# concept[].definition
Audit event: Application Entity has stopped.

# concept[].definition
Audit event: User login has been attempted.

# concept[].definition
Audit event: User logout has been attempted.

# concept[].definition
Audit event: Node Authentication has been attempted.

# concept[].definition
Audit event: Emergency Override has started.

# concept[].definition
Audit event: Network configuration has been changed.

# concept[].definition
Audit event: Security configuration has been changed.

# concept[].definition
Audit event: Hardware configuration has been changed.

# concept[].definition
Audit event: Software configuration has been changed.

# concept[].definition
Audit event: A use of a restricted function has been attempted.

# concept[].definition
Audit event: Audit recording has been stopped.

# concept[].definition
Audit event: Audit recording has been started.

# concept[].definition
Audit event: Security attributes of an object have been changed.

# concept[].definition
Audit event: Security roles have been changed.

# concept[].definition
Audit event: Security attributes of a user have been changed.

# concept[].definition
Audit event: Emergency Override has Stopped.

# concept[].definition
Audit event: Remote Service Operation has Begun.

# concept[].definition
Audit event: Remote Service Operation has Stopped.

# concept[].definition
Audit event: Local Service Operation has Begun.

# concept[].definition
Audit event: Local Service Operation Stopped.

# concept[].definition
Audit event: An authentication decision has been made.

# concept[].definition
Audit event: An authorization decision has been made.

# concept[].definition
Audit event: A persistent session has started.

# concept[].definition
Audit event: A persistent session has stopped.

# concept[].definition
Audit event: An access control decision has been made.

# concept[].definition
Audit participant role ID of software application.

# concept[].definition
Audit participant role ID of software application launcher, i.e., the entity that started or stopped an application.

# concept[].definition
Audit participant role ID of the receiver of data.

# concept[].definition
Audit participant role ID of the sender of data.

# concept[].definition
Audit participant role ID of media receiving data during an export.

# concept[].definition
Audit participant role ID of media providing data during an import.

# concept[].definition
ParticipantObjectID type: Study Instance UID.

# concept[].definition
ParticipantObjectID type: SOP Class UID.

# concept[].definition
ID of a node that is a participant object of an audit message.

# concept[].definition
System, organization, agency, or department that has assigned an instance identifier (such as placer or filler number, patient or provider identifier, etc.).

# concept[].definition
Procedure order canceled by requesting physician or other authorized physician.

# concept[].definition
Equipment failure prevented completion of procedure.

# concept[].definition
Procedure discontinued due to incorrect procedure being ordered.

# concept[].definition
Procedure discontinued due to patient allergy to media/contrast (reported or reaction).

# concept[].definition
Procedure discontinued due to death of Patient.

# concept[].definition
Procedure discontinued due to patient refusal to continue procedure.

# concept[].definition
Procedure discontinued due to patient being taken for treatment or surgery.

# concept[].definition
Procedure discontinued due to patient pregnancy (reported or determined).

# concept[].display
Change of procedure for correct charging

# concept[].definition
Procedure discontinued to restart with new procedure code for correct charging.

# concept[].definition
Procedure discontinued due to duplicate orders received for same procedure.

# concept[].definition
Procedure order canceled by nursing unit.

# concept[].definition
Procedure discontinued due to incorrect side (laterality) being ordered.

# concept[].definition
Procedure discontinued for unspecified reason.

# concept[].definition
Procedure discontinued due to incorrect patient or procedure step selected from modality worklist.

# concept[].definition
Patient condition prevented continuation of procedure.

# concept[].definition
Procedure step is discontinued to change to other equipment or modality.

# concept[].definition
A movement of the patient preventing continuation of procedure or affecting result quality.

# concept[].definition
An error of the operator preventing continuation of procedure or affecting result quality.

# concept[].definition
The brachytherapy channel is obstructed and the treatment in this channel cannot proceed.

# concept[].definition
One or more of the objects is malformed.

# concept[].definition
Receiving System is unable to accept the object type.

# concept[].definition
One or more objects associated with the object set is missing.

# concept[].definition
The contents of the Media could not be accessed properly.

# concept[].definition
Procedure discontinued due to necessary equipment, staff or other resource becoming (temporarily) unavailable to the procedure.

# concept[].definition
Procedure discontinued due to necessary equipment, staff or other resource being inadequate to complete the procedure.

# concept[].definition
A new Procedure Step has been scheduled to replace the Discontinued Procedure Step.

# concept[].definition
It is recommended that a new Procedure Step be scheduled to replace the Discontinued Procedure Step.

# concept[].display
Workitem assignment rejected by assigned resource

# concept[].definition
The resource to which a workitem has been assigned has rejected the assignment.

# concept[].definition
Reporting not possible due to lack of quality of the images provided.

# concept[].definition
The nature of the clinical problem means that reporting of the study requires a subject matter expert.

# concept[].definition
The expiration date/time of the workitem has been exceeded.

# concept[].definition
Ventral structures of the diencephalon that cannot readily be distinguished on MR imaging, including the hypothalamus, mammillary body, subthalamic nuclei, substantia nigra, red nucleus, lateral geniculate nucleus, medial geniculate nucleus, zona incerta, cerebral peduncle, lenticular fasciculus, medial lemniscus, and optic tract.See and .

# concept[].definition
Area(s) of reduced intensity on T1 weighted images relative to the surrounding white matter.These may be indicative of age-related or neurodegenerative white matter lesions, and may be co-located with areas of white matter T2 hyperintensity, but the concept is specifically confined to the MR appearance on T1 weighted images.

# concept[].definition
Area(s) of increased intensity on T2 weighted images relative to the surrounding white matter.These may be indicative of age-related or neurodegenerative white matter lesions, and may be co-located with areas of white matter T1 hypointensity, but the concept is specifically confined to the MR appearance on T2 weighted images.

# concept[].definition
The dorsal component of the SLF originating from the medial and dorsal parietal cortex and ending in the dorsal and medial part of the frontal lobe.See Makris N, et al. "Segmentation of Subcomponents within the Superior Longitudinal Fascicle in Humans: A Quantitative, In Vivo, DT-MRI Study." Cerebral Cortex 15, no. 6 (June 1, 2005): 854-69. doi:10.1093/cercor/bhh186.

# concept[].definition
The major component of the SLF, derived from the caudal-inferior parietal region corresponding to the angular gyrus in the human and terminating within the dorsolateral frontal region.See Makris N, et al. "Segmentation of Subcomponents within the Superior Longitudinal Fascicle in Humans: A Quantitative, In Vivo, DT-MRI Study." Cerebral Cortex 15, no. 6 (June 1, 2005): 854-69. doi:10.1093/cercor/bhh186.

# concept[].definition
The ventral component of the SLF, originating from the supramarginal gyrus and terminating predominantly in the ventral premotor and prefrontal areas.See Makris N, et al. "Segmentation of Subcomponents within the Superior Longitudinal Fascicle in Humans: A Quantitative, In Vivo, DT-MRI Study." Cerebral Cortex 15, no. 6 (June 1, 2005): 854-69. doi:10.1093/cercor/bhh186.

# concept[].definition
White matter that surrounds a lesion of interest.

# concept[].display
Spin Tagging Perfusion MR Signal Intensity

# concept[].definition
Signal intensity of a Spin tagging Perfusion MR image. Spin tagging is a technique for the measurement of blood perfusion, based on magnetically labeled arterial blood water as an endogenous tracer.

# concept[].display
Contrast Agent Angio MR Signal Intensity

# concept[].definition
Signal intensity of a Contrast Agent Angio MR image.

# concept[].display
Time Of Flight Angio MR Signal Intensity

# concept[].definition
Signal intensity of a Time-of-flight (TOF) MR image. Time-of-flight (TOF) is based on the phenomenon of flow-related enhancement of spins entering into an imaging slice. As a result of being unsaturated, these spins give more signal that surrounding stationary spins.

# concept[].display
Proton Density Weighted MR Signal Intensity

# concept[].definition
Signal intensity of a Proton Density Weighted MR image. All MR images have intensity proportional to proton density. Images with very little T1 or T2 weighting are called 'PD-weighted'.

# concept[].definition
Signal intensity of T1 Weighted MR image. A T1 Weighted MR image is created typically by using short TE and TR times.

# concept[].definition
Signal intensity of a T2 Weighted MR image. T2 Weighted image contrast state is approached by imaging with a TR long compared to tissue T1 (to reduce T1 contribution to image contrast) and a TE between the longest and shortest tissue T2s of interest.

# concept[].definition
Signal intensity of a T2* Weighted MR image. The T2* phenomenon results from molecular interactions (spin spin relaxation) and local magnetic field non-uniformities, which cause the protons to precess at slightly different frequencies.

# concept[].definition
Signal intensity of a Field Map MR image. A Field Map MR image provides a direct measure of the B0 inhomogeneity at each point in the image.

# concept[].definition
Coefficient reflecting the fractional anisotropy of the tissues, derived from a diffusion weighted MR image. Fractional anisotropy is proportional to the square root of the variance of the Eigen values divided by the square root of the sum of the squares of the Eigen values.

# concept[].definition
Coefficient reflecting the relative anisotropy of the tissues, derived from a diffusion weighted MR image.

# concept[].definition
Dxx Component of the diffusion tensor, quantifying the molecular mobility along the X axis.

# concept[].definition
Dxy Component of the diffusion tensor, quantifying the correlation of molecular displacements in the X and Y directions.

# concept[].definition
Dxz Component of the diffusion tensor, quantifying the correlation of molecular displacements in the X and Z directions.

# concept[].definition
Dyy Component of the diffusion tensor, quantifying the molecular mobility along the Y axis.

# concept[].definition
Dyz Component of the diffusion tensor, quantifying the correlation of molecular displacements in the Y and Z directions.

# concept[].definition
Dzz Component of the diffusion tensor, quantifying the molecular mobility along the Z axis.

# concept[].display
T1 Weighted Dynamic Contrast Enhanced MR Signal Intensity

# concept[].definition
Signal intensity of a T1 Weighted Dynamic Contrast Enhanced MR image. A T1 Weighted Dynamic Contrast Enhanced MR image reflects the dynamics of diffusion of the exogenous contrast media from the blood pool into the extra vascular extracellular space (EES) of the brain at a rate determined by the blood flow to the tissue, the permeability of the Brain Blood Barrier (BBB), and the surface area of the perfusing vessels.

# concept[].display
T2 Weighted Dynamic Contrast Enhanced MR Signal Intensity

# concept[].definition
Signal intensity of a T2 Weighted Dynamic Contrast Enhanced MR image. A T2 Weighted Dynamic Contrast Enhanced MR image reflects the T2 of tissue decrease as the Gd contrast agent bolus passes through the brain.

# concept[].display
T2* Weighted Dynamic Contrast Enhanced MR Signal Intensity

# concept[].definition
Signal intensity of a T2* Weighted Dynamic Contrast Enhanced MR image. A T2* Weighted Dynamic Contrast Enhanced MR image reflects the T2* of tissue decrease as the Gd contrast agent bolus passes through the brain.

# concept[].definition
Signal intensity of a Blood Oxygenation Level image. Used in Photoacoustic Imaging and functional MR. In functional MR BOLD imaging it is used for detecting brain activation and is sensitive to blood oxygenation (but also to cerebral blood flow and volume).

# concept[].definition
Accumulated decay event counts in a nuclear medicine projection image.

# concept[].definition
Accumulated decay event counts in a Nuclear Medicine Tomographic image (including PET).

# concept[].definition
Spatial Displacement along axis X of a non linear deformable spatial registration image. The X axis is defined in reference to the patient's orientation, and is increasing to the left hand side of the patient.

# concept[].definition
Spatial Displacement along axis Y of a non linear deformable spatial registration image. The Y axis is defined in reference to the patient's orientation, and is increasing to the posterior side of the patient.

# concept[].definition
Spatial Displacement along axis Z of a Non linear deformable spatial registration image. The Z axis is defined in reference to the patient's orientation, and is increasing toward the head of the patient.

# concept[].definition
Measured resistance to the flow of blood.

# concept[].definition
Measured resistance to the flow of blood.

# concept[].definition
Velocity of tissue based on Doppler measurements.

# concept[].definition
Velocity of blood flow based on Doppler measurements.

# concept[].definition
Statistical variance of blood velocity relative to mean.

# concept[].definition
Scalar value related to the elastic properties of the tissue.

# concept[].definition
Scalar value related to the volume of blood perfusing into tissue.

# concept[].definition
Reduction in strength of ultrasound signal as the wave.

# concept[].definition
Red component of a true color image (RGB).

# concept[].definition
Green component of a true color image (RGB).

# concept[].definition
Blue component of a true color image (RGB).

# concept[].definition
Y (Luminance) component of a YBR FULL image, as defined in JPEG 2000.

# concept[].definition
CB (Blue chrominance) component of a YBR FULL image, as defined in JPEG 2000.

# concept[].definition
CR (Red chrominance) component of a YBR FULL image, as defined in JPEG 2000.

# concept[].definition
Y (Luminance) component of a YBR PARTIAL image, as defined in JPEG 2000.

# concept[].definition
CB (Blue chrominance) component of a YBR PARTIAL image, as defined in JPEG 2000.

# concept[].definition
CR (Red chrominance) component of a YBR PARTIAL image, as defined in JPEG 2000.

# concept[].definition
Y (Luminance) component of a YBR ICT image (Irreversible Color Transform), as defined in JPEG 2000.

# concept[].definition
CB (Blue chrominance) component of a YBR ICT image (Irreversible Color Transform), as defined in JPEG 2000.

# concept[].definition
CR (Red chrominance) component of a YBR ICT image (Irreversible Color Transform), as defined in JPEG 2000.

# concept[].definition
Y (Luminance) component of a YBR RCT image (Reversible Color Transform), as defined in JPEG 2000.

# concept[].definition
CB (Blue chrominance) component of a YBR RCT image (Reversible Color Transform), as defined in JPEG 2000.

# concept[].definition
CR (Red chrominance) component of a YBR RCT image (Reversible Color Transform), as defined in JPEG 2000.

# concept[].definition
The ability of a material to create an ultrasound return echo.

# concept[].definition
Decrease in the number of photons in an X-Ray beam due to interactions with the atoms of a material substance. Attenuation is due primarily to two processes, absorption and scattering.

# concept[].definition
Coefficient that describes the fraction of a beam of X-Rays or gamma rays that is absorbed or scattered per unit thickness of the absorber. This value basically accounts for the number of atoms in a cubic cm volume of material and the probability of a photon being scattered or absorbed from the nucleus or an electron of one of these atoms.

# concept[].definition
Signal intensity of an MR image, not otherwise specified.

# concept[].definition
Binary value denoting that the segmented property is present.

# concept[].definition
Probability, defined as a percentage, that the segmented property occupies the spatial area defined by the voxel.

# concept[].definition
Percentage of the voxel area occupied by the segmented property.

# concept[].definition
Spatial dimension, denoting a linear displacement.

# concept[].definition
Dimension denoting the energy (frequency or wavelength) of photons.

# concept[].definition
Dimension used to sequence events, to compare the duration of events and the intervals between events.

# concept[].definition
A spatial dimension axis running along a line between the patient's left and right side.

# concept[].definition
A spatial dimension axis running along a line between the patient's head and foot.

# concept[].definition
A spatial dimension axis running along a line between the patient's anterior and posterior sides.

# concept[].definition
A spatial dimension axis running along a line between the apex and base of an organ, object, or chamber.

# concept[].definition
A spatial dimension axis running along a line between the anterior and inferior sides of an organ, object, or chamber.

# concept[].definition
A spatial dimension axis running along a line between the septum and wall of a chamber.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the right to the left side of the patient.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the left to the right side of the patient.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the head to the foot of the patient.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the foot to the head of the patient.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the anterior to the posterior side of the patient.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the posterior to the anterior side of the patient.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the apex to the base.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the base to the apex.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the anterior to the inferior.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the inferior to the anterior.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the septum of a chamber to the opposite wall.

# concept[].definition
Orientation of a spatial dimension where increasing values run from the opposite wall to the septum of a chamber.

# concept[].definition
The x coordinate of the upper left hand corner (center of the first voxel transmitted) of the image, with respect to the patient-based coordinate system.

# concept[].definition
The y coordinate of the upper left hand corner (center of the first voxel transmitted) of the image, with respect to the patient-based coordinate system.

# concept[].definition
The z coordinate of the upper left hand corner (center of the first voxel transmitted) of the image, with respect to the patient-based coordinate system.

# concept[].definition
The x value of the first row direction cosine with respect to the patient, with respect to the patient-based coordinate system.

# concept[].definition
The y value of the first row direction cosine with respect to the patient, with respect to the patient-based coordinate system.

# concept[].definition
The z value of the first row direction cosine with respect to the patient, with respect to the patient-based coordinate system.

# concept[].definition
The x value of the first column direction cosine with respect to the patient, with respect to the patient-based coordinate system.

# concept[].definition
The y value of the first column direction cosine with respect to the patient, with respect to the patient-based coordinate system.

# concept[].definition
The z value of the first column direction cosine with respect to the patient, with respect to the patient-based coordinate system.

# concept[].definition
Number of rows in the pixel data of the image.

# concept[].definition
Number of columns in the pixel data of the image.

# concept[].definition
The family of algorithm(s) that best describes the software algorithm used.

# concept[].definition
The name assigned by a manufacturer to a specific software algorithm.

# concept[].definition
The input parameters used by a manufacturer to configure the behavior of a specific software algorithm.

# concept[].definition
The software version identifier assigned by a manufacturer to a specific software algorithm.

# concept[].definition
The type of correlation applied to detection results.

# concept[].definition
Assignment of intermediate or overall interpretation results to a general category.

# concept[].definition
Assessment of annotating tissues in breast; generally including fatty, mixed or dense

# concept[].display
Breast Outline including Pectoral Muscle Tissue

# concept[].definition
Purpose of reference for an SCOORD Content Item that is an outline of the breast that includes the pectoral muscle tissue

# concept[].definition
The type of distribution associated with detected calcifications.

# concept[].definition
Identification of the morphology of detected calcifications.

# concept[].definition
The central point of a finding or feature.

# concept[].definition
The likelihood that the feature analyzed is in fact the type of feature identified.

# concept[].definition
The likelihood that the finding detected is in fact the type of finding identified.

# concept[].definition
The certainty that a device places on an impression, where 0 equals no certainty and 100 equals certainty.

# concept[].definition
A location identifier based on clockface numbering or anatomic subregion.

# concept[].definition
An item that is an inferred correlation relating two or more individual findings or features.

# concept[].definition
The inferred relationship between the findings or features making up a composite feature.

# concept[].definition
General assessment of whether or not CAD processing was successful, and whether any findings resulted.

# concept[].definition
A location identifier based on a feature's inferred distance from the surface of the associated anatomy.

# concept[].definition
A textual description of the change that occurred over time in a qualitative characteristic of a feature.

# concept[].definition
The type of finding sought after by a specific algorithm applied to one image.

# concept[].definition
A general change that occurred within an imaged area between a prior imaging procedure and the current imaging procedure.

# concept[].definition
A group of analysis algorithms that were attempted, but failed.

# concept[].definition
A group of detection algorithms that were attempted, but failed.

# concept[].definition
For projection radiography, the horizontal physical distance measured at the front plane of an Image Receptor housing between the center of each pixel (spacing between the centers of adjacent columns). For tomographic images, the horizontal physical distance in the patient between the center of each pixel.

# concept[].definition
Laterality of (possibly paired) body part contained in an image.

# concept[].definition
A container that references all image data used as evidence to produce a report.

# concept[].definition
A numeric value in the range 0 to 100, inclusive, where 0 is worst quality and 100 is best quality.

# concept[].definition
Purpose of reference for an SCOORD Content Item that identifies a specific region of interest within an image

# concept[].definition
The projection of the anatomic region of interest on an image receptor.

# concept[].definition
Free-form text describing the overall or an individual impression.

# concept[].definition
A container for a group of related results from interpretation of one or more images and associated clinical information.

# concept[].definition
The X-Ray attenuation of a lesion relative to the expected attenuation of an equal volume of fibroglandular breast tissue.

# concept[].definition
A structured report containing the results of computer-aided detection or diagnosis applied to breast imaging and associated clinical information.

# concept[].definition
The characteristic of the boundary, edges or border of a detected lesion.

# concept[].definition
The quantity of calcifications detected within an identified group or cluster.

# concept[].definition
A non-lesion object identified within one or more images.

# concept[].definition
Purpose of reference for a COMPOSITE Content Item that identifies it as the original source of evidence for another Content Item in the report

# concept[].definition
The inferred type of disease associated with an identified feature.

# concept[].definition
The patient orientation relative to the image plane, specified by a value that designates the anatomical direction of the positive column axis (top to bottom).

# concept[].definition
The patient orientation relative to the image plane, specified by a value that designates the anatomical direction of the positive row axis (left to right).

# concept[].definition
Purpose of reference for an SCOORD Content Item that is an outline of the pectoral muscle tissue only

# concept[].definition
Percent of breast area that is mammographically dense, excluding pectoralis muscle.

# concept[].definition
The likelihood that an identified finding or feature is cancerous.

# concept[].definition
A location identifier based on the division of an area into four regions.

# concept[].definition
A qualitative characteristic of a feature that has changed over time.

# concept[].definition
The effect of the quality of an image on its usability.

# concept[].definition
The quality control standard used to make a quality assessment.

# concept[].definition
A specific quality related deficiency detected within an image.

# concept[].definition
Recommended type of follow-up to an imaging procedure, based on interpreted results.

# concept[].definition
Recommended follow-up date to an imaging procedure, based on interpreted results.

# concept[].definition
Recommended follow-up interval to an imaging procedure, based on interpreted results.

# concept[].definition
The recommendation of the producer of a Content Item regarding presentation of the Content Item by recipients of the report.

# concept[].definition
An indication of how widespread the detection of a feature is within the analyzed image data.

# concept[].definition
A textual description of the contents of a selected region identified within an image.

# concept[].definition
Date on which the acquisition of the study information was started.

# concept[].definition
Time at which the acquisition of the study information was started.

# concept[].definition
A group of analysis algorithms that were attempted and completed successfully.

# concept[].definition
A group of detection algorithms that were attempted and completed successfully.

# concept[].definition
An overall indication of whether the CAD detection algorithms applied were completed successfully.

# concept[].definition
An overall indication of whether the CAD analysis algorithms applied were completed successfully.

# concept[].definition
For projection radiography, the vertical physical distance measured at the front plane of an Image Receptor housing between the center of each pixel (spacing between the centers of adjacent rows). For tomographic images, the vertical physical distance in the patient between the center of each pixel.

# concept[].definition
A radiographic projection that has been with the patient lying on a table with the X-Ray source on one side of the table and the detector on the other.

# concept[].definition
One of a number of discrete points on the Receiver-Operator Characteristics (ROC) curve that reflects the expected sensitivity and specificity of a CAD algorithm, where zero indicates the highest specificity, lowest sensitivity operating point. The value should not exceed the Maximum CAD Operating Point.

# concept[].definition
The maximum value of CAD Operating Point for the specific CAD algorithm used.

# concept[].definition
The intended interpretation of a CAD Operating Point.

# concept[].definition
The number of false CAD markers per image. Correlates to inverse of Image Specificity.

# concept[].definition
The number of false markers per collection of images that are CAD processed as a group. Correlates to inverse of Case Specificity.

# concept[].definition
The percentage of cancers that should be detected by a CAD algorithm where CAD marks the cancers in at least one view.

# concept[].definition
The percentage of cancers that should be detected by a CAD algorithm where CAD marks the cancers in each view.

# concept[].definition
The percentage of cases (collections of images CAD processed as a group) without cancer that have no CAD findings whatsoever. Correlates to inverse of False Markers per Case.

# concept[].definition
The percentage of images without cancer that have no CAD findings whatsoever. Correlates to inverse of False Markers per Image.

# concept[].definition
The CAD operating point that is recommended for initial display by the creator of the structured report.

# concept[].definition
A list of CAD operating points including their corresponding characteristics.

# concept[].definition
A specific area of interest noted within an image.

# concept[].definition
The surface shape of all or a portion of breast related anatomy.

# concept[].definition
Image quality incorporates the following clinical image evaluation parameters: assessment of positioning, compression, artifacts, exposure, contrast, sharpness, and labeling.

# concept[].definition
A finding or feature that is identified as a non-anatomic foreign object.

# concept[].definition
A space-occupying lesion identified in a single image or projection

# concept[].definition
Multiple calcifications identified as occupying a small area of tissue (less than 2 cc)

# concept[].definition
Straightening or thickening of Cooper's ligaments.

# concept[].definition
An abnormality noted at imaging within the dermis of the breast.

# concept[].definition
An abnormality noted at imaging on the epidermis of the breast.

# concept[].display
Post Procedure Mammograms for Marker Placement

# concept[].definition
An assessment category to indicate that images have been acquired to assess marker placement following a breast interventional procedure.

# concept[].display
Follow-up post biopsy as directed by clinician

# concept[].definition
An indication that the patient should seek post procedural follow-up directives from a clinical health care provider.

# concept[].display
Known biopsy proven malignancy - take appropriate action

# concept[].definition
A recommendation on a patient with known cancer to take steps appropriate to the diagnosis.

# concept[].display
Personal history of breast cancer with mastectomy

# concept[].definition
Patient has previous diagnosis of breast cancer resulting in mastectomy.

# concept[].definition
Patient has had biopsy containing proven malignancy.

# concept[].definition
Patient has a finding of mass reported on a prior imaging study.

# concept[].definition
A breast imaging procedure performed on a specific area of the breast.

# concept[].definition
A breast imaging procedure performed on the entire breast.

# concept[].definition
A cluster of tiny anechoic foci each smaller than 2-3 mm in diameter with thin (less than 0.5 mm) intervening septations and no discrete solid components.

# concept[].definition
A fluid filled mass most commonly characterized by homogeneous low-level internal echoes on ultrasound.

# concept[].definition
Views not inclusive of MLO and CC (BI-RADS®).

# concept[].definition
A spot or coned down compression of the breast providing a reduction in the thickness and a magnification of the localized area of interest and improved separation of breast tissue.

# concept[].definition
Obtain previous mammography studies to compare to present study.

# concept[].definition
A medical procedure used for the sampling of mammary duct tissue

# concept[].definition
Follow up study at 12 months for women ≥ 40 years of age having a prior negative study and no mitigating risk factors for breast cancer.

# concept[].display
Any decision to biopsy should be based on clinical assessment

# concept[].definition
Any decision to perform tissue acquisition should be based on clinical assessment.

# concept[].display
Follow-up at short interval (1-11 months)

# concept[].definition
Follow-up at short interval (1-11 months).

# concept[].definition
Tissue acquisition should be considered.

# concept[].definition
Breast tissue acquisition following the identification of an area of concern with the placement of a needle or needle-wire assembly.

# concept[].definition
Pathologic analysis of breast tissue and lesions using core tissue samples.

# concept[].display
Suggestive of malignancy - take appropriate action

# concept[].definition
Lesions that do not have the characteristic morphologies of breast cancer but have a definite probability of being malignant. There is a sufficient concern to urge a biopsy.

# concept[].definition
Tissue acquisition should be strongly considered.

# concept[].display
Highly suggestive of malignancy - take appropriate action

# concept[].definition
Lesions have a high probability of being cancer, which require additional action.

# concept[].display
Presentation Required: Rendering device is expected to present

# concept[].definition
The producer of a report intends for a recipient of the report to present or display the associated Content Item.

# concept[].display
Presentation Optional: Rendering device may present

# concept[].definition
The producer of a report considers the presentation or display of the associated Content Item by a recipient to be optional.

# concept[].display
Not for Presentation: Rendering device expected not to present

# concept[].definition
The producer of a report intends for a recipient of the report NOT to present or display the associated Content Item.

# concept[].display
Target Content Items are related temporally

# concept[].definition
The associated Content Items are identified as being the same finding or feature at different points in time.

# concept[].display
Target Content Items are related spatially

# concept[].definition
The associated Content Items are identified as being the same finding or feature on different projections taken at the same point in time.

# concept[].display
Target Content Items are related contra-laterally

# concept[].definition
The associated Content Items are identified as being related side-to-side.

# concept[].definition
There is one image in the interpreted data.

# concept[].display
Feature detected on only one of the images

# concept[].definition
There is more than one image of the same modality in the interpreted data.

# concept[].definition
There is more than one image of the same modality in the interpreted data.

# concept[].display
Feature detected on images from multiple modalities

# concept[].definition
The interpreted data contains images from multiple modalities.

# concept[].definition
The fibrous tissue replacing normal tissues destroyed by disease or injury

# concept[].definition
A medical appliance used for localization of non palpable breast lesions to insure that the proper area is removed in a surgical biopsy

# concept[].definition
A medical appliance used for regulating cardiac rhythms

# concept[].definition
A compression device used for obtaining mammographic images

# concept[].definition
A device used for restricting an X-Ray beam

# concept[].definition
An area designated on a radiographic film for facility and patient ID information

# concept[].definition
The value of the concept is not specified

# concept[].definition
Image quality deficiency according to MQSA.

# concept[].display
View and Laterality Marker does not have both view and laterality

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
View and Laterality Marker does not have approved codes

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
View and Laterality Marker is not near the axilla

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
View and Laterality Marker overlaps breast tissue

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
View and Laterality Marker is partially obscured

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
Flash is illegible, does not fit, or is lopsided

# concept[].definition
Image quality deficiency according to MQSA.

# concept[].display
Flash doesn't include patient name and additional patient id

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
Flash doesn't include date of examination

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
Flash doesn't include facility name and location

# concept[].definition
Image quality deficiency according to MQSA.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
Flash doesn't include mammography unit identification

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
MLO No fat is visualized posterior to fibroglandular tissues

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
MLO Poor separation of deep and superficial breast tissues

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].display
CC Posterior nipple line does not measure within 1 cm of MLO

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Image quality deficiency according to MQCM.

# concept[].definition
Signals that do not faithfully reproduce actual anatomic structures because of distortion or of addition or deletion of information.

# concept[].definition
Feature(s) arising from the acquisition unit's anti-scatter grid mechanism. For two-dimensional systems, such features include those of mechanically damaged or incorrectly positioned grids. For moving or Bucky grids, artifacts may result from intentional grid motion that is inadequate in duration or velocity uniformity.

# concept[].definition
Inadequate arrangement of the anatomy of interest with respect to the X-Ray field and image detector sensitive area. Examples: 1) positioning is "cutoff" when the projection of anatomy of interest falls outside the sensitive area of the detector; 2) "cone cut", in which the X-Ray field does not adequately cover the anatomy of interest; 3) detector's sensitive surface is too small to cover the projection of the anatomy of interest; 4) improper angular orientation or "rotation" of anatomy of interest with respect to the X-Ray source, or detector; 5) projection of other anatomy or clothing over the anatomy of interest in the image.

# concept[].definition
Unacceptable image blur resulting from motion of the anatomy of interest during exposure or the inadequately compensated motion of X-Ray source with respect to the image detector during exposure.

# concept[].definition
Inadequate number of quanta reached the detector during exposure. Reasons for under exposed images include low kVp, low mAs product, excess Source Image Distance. Under exposed images have inadequate signal and higher noise in the areas of interest.

# concept[].definition
An excess number of quanta reached the detector during exposure. Reasons for over exposed images include high kVp, high mAs product, short Source Image Distance. Over exposed images have high signal and lower noise in the areas of interest. Over exposed area may demonstrate lack of contrast from over saturation of the detector.

# concept[].definition
Superposed features or flaws of the detector.

# concept[].display
Artifact(s) other than grid or detector artifact

# concept[].definition
Features or discontinuities arising from causes other than the anti-scatter grid and image detector.

# concept[].definition
Failure of the device to operate according to mechanical design specifications.

# concept[].definition
Failure of a device to operate according to electrical design specifications.

# concept[].definition
Attributable to software used in generation or handling of image.

# concept[].definition
Images processed inappropriately, not following appropriate protocol.

# concept[].definition
Failure that is not mechanical or electrical or otherwise described.

# concept[].definition
Unidentified or unknown cause of failure.

# concept[].definition
The attempted process was completely successful.

# concept[].definition
The attempted process succeeded in some ways, but failed in others.

# concept[].definition
The attempted process completely failed.

# concept[].definition
Analysis of a related group of findings or features detected during image data inspection, to produce a summary impression and/or recommendation.

# concept[].definition
Analysis of all groups of findings or features, to produce a single impression and/or recommendation.

# concept[].display
Unusable - Quality renders image unusable

# concept[].definition
Quality of an image renders it unusable for the intended purpose.

# concept[].display
Usable - Does not meet the quality control standard

# concept[].definition
Quality of an image is usable for the intended purpose, but does not meet the quality control standard.

# concept[].display
Usable - Meets the quality control standard

# concept[].definition
Quality of an image is usable for the intended purpose and meets the quality control standard.

# concept[].display
Mammography Quality Control Manual 1999, ACR

# concept[].definition
An image quality control standard specified by the American College of Radiology.

# concept[].definition
An image quality control standard in the US Code of Federal Regulations.

# concept[].display
Institutionally defined quality control standard

# concept[].definition
An image quality control standard specified or adopted by the institution responsible for the document.

# concept[].display
All algorithms succeeded; without findings

# concept[].definition
No findings resulted upon successful completion of all attempted computer-aided detection and/or analysis.

# concept[].definition
One or more findings resulted upon successful completion of all attempted computer-aided detection and/or analysis.

# concept[].display
Not all algorithms succeeded; without findings

# concept[].definition
No findings resulted from the attempted computer-aided detection and/or analysis, but one or more failures occurred in the process.

# concept[].display
Not all algorithms succeeded; with findings

# concept[].definition
One or more findings resulted from the attempted computer-aided detection and/or analysis, but one or more failures occurred in the process.

# concept[].display
No algorithms succeeded; without findings

# concept[].definition
All of the attempted computer-aided detection and/or analysis failed, so there could be no findings.

# concept[].definition
A benign tumor having glandular characteristics but composed of fat, with the presence of normal mammary ducts

# concept[].definition
Neoplasms composed of myoepithelial cells

# concept[].definition
Axillary node that is normal in appearance with no associated pathology.

# concept[].definition
Excessive proliferation of normal tissue arrangement of the axillary node.

# concept[].definition
Cyst with benign morphology containing blood.

# concept[].definition
Calcifications having typically benign morphology. They are not of intermediate or high probability of concern for malignancy.

# concept[].definition
Growing within a cystic adenoma, filling the cavity with a mass of branching epithelial processes

# concept[].definition
Adenoma located in mammary duct, present as discrete sclerotic nodules, solitary or multiple.

# concept[].definition
The occurrence of fibrous tumor-forming stromal proliferation in patients with diabetes mellitus.

# concept[].definition
A deep seated firm tumor frequently occurring on the chest consisting of collagenous tissue that infiltrates surround muscle; frequently recurs but does not metastasize

# concept[].definition
A cyst formed of a mass of epithelial cells, as a result of trauma has been pushed beneath the epidermis. The cyst is lined with squamous epithelium and contains concentric layers or keratin

# concept[].definition
Excessive proliferation of fibroadenoma tissue.

# concept[].definition
A lipoma with an abundant stroma of fibrous tissue.

# concept[].definition
Retention cyst caused by occlusion of a lactiferous duct

# concept[].definition
A congenital anomaly that leads to a proliferation of blood vessels leading to a mass that resembles a neoplasm, not located in parenchymal areas but subcutaneous

# concept[].definition
A form of fibrocystic disease in young woman with florid and sclerosing adenosis that microscopically may suggest carcinoma.

# concept[].definition
Enlarging masses during lactation. A circumscribed benign tumor composed primarily of glandular structures with scanty stroma, with prominent secretory changes in the duct

# concept[].definition
Changes related to the process of lactation.

# concept[].definition
A papilloma pertaining to large mammary duct.

# concept[].definition
Solitary or multiple tumors of muscles and fibrous tissues, or tumors composed of myofibroblasts

# concept[].definition
Irregular clusters of small tubules are present in adipose or fibrous tissue, resembling tubular carcinoma but lacking stromal fibroblastic proliferation.

# concept[].definition
Papilloma typically involving an aggregate of adjacent ducts in the periphery of the breast, likely representing involvement of several foci of one or two duct systems.

# concept[].definition
Condition in which there are tumors of various sizes on peripheral nerves. They may be neuromas or fibromas

# concept[].definition
A cyst resulting from the loss of the epithelial lining of a sebaceous dermoid or lacteal cyst.

# concept[].definition
Breast tissue with characteristics of a benign nature, following breast reduction surgery.

# concept[].definition
A benign stromal lesion composed of intermixed stromal and epithelial elements. The lobular and duct structures of the breast parenchyma are separated by an increased amount of stroma, non specific proliferative epithelial changes include hyperplasia of duct and lobular epithelium often with accentuation of myoepithelial cells and aprocine metaplasia with or without cyst formation.

# concept[].definition
An nonencapsulated stellate lesion consisting of a fibroelastic core and radiating bands of fibrous connective tissue containing lobules manifesting adenosis and ducts with papillary or diffuse intraductal hyperplasia

# concept[].definition
Prominent interductal fibrosis of the terminal ductules

# concept[].definition
Nodular inflammatory lesions due to the presence of silicone in the breast tissue.

# concept[].definition
Spontaneous excessive proliferation of breast tissue, usually found in younger women.

# concept[].definition
Papilloma(s) pertaining the peripheral ducts.

# concept[].definition
Axillary node with lymphoid tissue neoplasm.

# concept[].definition
Metastatic disease to the axillary node.

# concept[].definition
A malignant neoplasm occurring most often in breast and skin, believed to originate from endothelial cells of blood vessels, microscopically composed of closely packed round or spindle shaped cells, some of which line small spaces resembling vascular clefts

# concept[].definition
Histological changes to the vascular system related to an invasive process.

# concept[].definition
Carcinoma of the breast found in patients less than 20 years of age.

# concept[].definition
A carcinoma found in supernumerary breasts and aberrant breast tissue.

# concept[].definition
A carcinoma that synthesizes substances, including hormones, not considered to be normal products of the breast.

# concept[].definition
A basal cell carcinoma that arises in the nipple of the breast.

# concept[].definition
Carcinoma of the breast presenting during pregnancy or lactation.

# concept[].definition
A malignant neoplasm that contains elements of carcinoma and sarcoma, so extensively intermixed as to indicate neoplasia of epithelial and mesenchymal tissue

# concept[].definition
Comedocarcinoma of a duct with areas of necrotic tissue.

# concept[].definition
A non-invasive carcinoma restricted to the glandular lumen characterized by less aggressive malignant cytologic features and behavior.

# concept[].definition
A malignant neoplasm characterized by the formation of numerous, irregular, finger-like projections of fibrous stroma that is covered with a surface layer of neoplastic epithelial cells found in a cyst.

# concept[].definition
Carcinoma with both characteristics of localized and spreading disease.

# concept[].definition
Mammary infiltrates as a secondary manifestation in patients with established leukemia.

# concept[].definition
Histological changes to the lymphatic system related to an invasive process.

# concept[].definition
A heterogeneous group of neoplasms arising in the reticuloendoethelial and lymphatic systems

# concept[].display
Occult carcinoma presenting with axillary lymph node metastases

# concept[].definition
A small carcinoma, either asymptomatic or giving rise to metastases without symptoms due to the primary carcinoma presenting with metastatic disease in the axillary lymph nodes.

# concept[].definition
A malignant lesion in the breast with morphologic patterns not typical of breast carcinoma arising from a non-mammary malignant neoplasm.

# concept[].display
Metastatic cancer to the breast from the colon

# concept[].definition
A malignant lesion in the breast with morphologic patterns not typical of breast carcinoma arising from a neoplasm in the colon.

# concept[].display
Metastatic cancer to the breast from the lung

# concept[].definition
A malignant lesion in the breast with morphologic patterns not typical of breast carcinoma arising from a neoplasm in the lung.

# concept[].definition
A malignant lesion in the breast with morphologic patterns not typical of breast carcinoma arising from a melanoma.

# concept[].display
Metastatic cancer to the breast from the ovary

# concept[].definition
A malignant lesion in the breast with morphologic patterns not typical of breast carcinoma arising from a neoplasm in the ovary.

# concept[].definition
A malignant lesion in the breast with morphologic patterns not typical of breast carcinoma arising from a sarcoma.

# concept[].definition
Multiple foci of non-invasive carcinoma restricted to the glandular lumen.

# concept[].definition
A malignant lesion in an axillary node arising from a non-axillary neoplasm.

# concept[].display
Metastasis to an intramammary lymph node

# concept[].definition
A malignant lesion in a intramammary lymph node arising from a non-intramammary lymph node neoplasm.

# concept[].definition
A malignant melanoma of the skin that arises in the nipple of the breast.

# concept[].definition
Squamous cell carcinoma to the terminal portion of the alveolar.

# concept[].definition
A non-invasive carcinoma restricted to the glandular lumen characterized by more aggressive malignant cytologic features and behavior.

# concept[].definition
An indication that some or all of the margin of a lesion has sharp corners, often forming acute angles.

# concept[].definition
Calcifications that vary in sizes and shapes and are usually smaller than0.5 mm in diameter.

# concept[].definition
Coarse calcifications that are 0.5 mm or greater in size.

# concept[].definition
An indicator that calcifications are imbedded within a mass.

# concept[].definition
An indicator that calcifications are imaged outside of a mass finding.

# concept[].definition
Tissue composition of the breast noted on sonography.

# concept[].definition
Fat lobules and uniformly echogenic bands of supporting structures comprise the bulk of breast tissue.

# concept[].definition
A uniformly echogenic layer of fibroglandular tissue is seen beneath a thin layer of subcutaneous fat.

# concept[].definition
The breast texture is characterized by multiple small areas of increased and decreased echogenicity.

# concept[].definition
Referential relationship of the finding to the imaging device as noted on sonography.

# concept[].definition
The long axis of a lesion parallels the skin line ("wider-than-tall" or in a horizontal orientation).

# concept[].definition
The anterior-posterior or vertical dimension is greater than the transverse or horizontal dimension.

# concept[].definition
The lesion boundary describes the transition zone between the mass and the surrounding tissue.

# concept[].definition
The sharp demarcation between the lesion and surrounding tissue can be imperceptible or a distinct well-defined echogenic rim of any thickness.

# concept[].definition
There is no sharp demarcation between the mass and the surrounding tissue, which is bridged by an echogenic transition zone.

# concept[].definition
An imaging characteristic of resonance noted during sonography.

# concept[].definition
Having increased echogenicity relative to fat or equal to fibroglandular tissue.

# concept[].definition
Mass contains both anechoic and echogenic components.

# concept[].definition
Defined relative to fat; masses are characterized by low-level echoes throughout.

# concept[].definition
Having the same echogenicity as fat (a complicated cyst or fibroadenoma may be isoechoic or hypoechoic).

# concept[].definition
The attenuation characteristics of a mass with respect to its acoustic transmission.

# concept[].definition
Decreased posterior echoes; edge shadows are excluded.

# concept[].display
Combined posterior enhancement and shadowing

# concept[].definition
More than one pattern of posterior attenuation, both shadowing and enhancement.

# concept[].display
Identifiable effect on surrounding tissues

# concept[].definition
Sonographic appearance of adjacent structures relative to a mass finding.

# concept[].definition
Characterization of vascularization in region of interest.

# concept[].definition
Vascularity not evident, such as on ultrasound.

# concept[].definition
Vascularity on imaging is seen within a lesion.

# concept[].display
Vascularity present immediately adjacent to lesion

# concept[].definition
Vascularity on imaging is seen immediately adjacent to a lesion.

# concept[].display
Diffusely increased vascularity in surrounding tissue

# concept[].definition
Vascularity on imaging is considered diffusely elevated within the surrounding breast tissue.

# concept[].definition
Relationship of the new anomaly to other clinical or imaging anomalies.

# concept[].display
Correlates to physical examination findings

# concept[].definition
An indication that the current imaging finding relates to a finding from a clinical breast examination.

# concept[].definition
An indication that the current imaging finding relates to a finding from a mammography study.

# concept[].definition
An indication that the current imaging finding relates to a finding from a breast MRI study.

# concept[].definition
An indication that the current imaging finding relates to a finding from a breast ultrasound study.

# concept[].definition
An indication that the current imaging finding relates to a finding from an imaging study.

# concept[].display
No correlation to other imaging findings

# concept[].definition
An indication that the current imaging finding has no relation to findings from any other imaging study.

# concept[].definition
An indication that the current imaging finding has no relation to any other clinical findings.

# concept[].definition
Classification of the cancer as invasive, DCIS, or other.

# concept[].definition
A malignancy that has spread beyond an area of focus.

# concept[].definition
A breast cancer with malignant pathology findings that are not classified as invasive or in situ.

# concept[].definition
In the first week of the menstrual cycle phase, that is, one week following menses.

# concept[].definition
In the second week of the menstrual cycle phase, that is, two weeks following menses.

# concept[].definition
In the third week of the menstrual cycle phase, that is, three weeks following menses.

# concept[].definition
An event occurred less than 3 months ago.

# concept[].definition
An event occurred between 4 months and 1 year ago.

# concept[].definition
An event occurred longer than 1 year ago.

# concept[].definition
Report title for the diagnostic report for one or more breast imaging or intervention procedures.

# concept[].definition
Concept name for the description of why a procedure has been performed.

# concept[].definition
A finding during clinical examination (i.e., history and physical examination) such as pain, palpable mass or discharge.

# concept[].definition
First screening mammogram taken for patient that is used as a comparison baseline for further examinations.

# concept[].definition
First mammogram taken for a patient without regard to whether it was for screening or a diagnostic procedure.

# concept[].definition
Concept name for the material of which a breast prosthetic device is constructed.

# concept[].definition
A numeric count of findings classified as similar in nature.

# concept[].definition
Concept name for the status of a breast prosthetic device as noted by imaging.

# concept[].definition
Mammogram using a digital image acquisition system.

# concept[].definition
Computer aided detection and/or computer aided diagnosis for mammography.

# concept[].definition
Concept name for a text-based section of a report.

# concept[].definition
A title for a report section that summarizes all interpretation results for a report with one overriding assessment.

# concept[].definition
Concept name for a collection of supporting evidence for a report.

# concept[].display
Additional evaluation requested from prior study

# concept[].definition
Prior study indicates that additional imaging be performed to further evaluate a suspicious or questionable anatomic region.

# concept[].display
Follow-up at short interval from prior study

# concept[].definition
The prior study recommended a follow-up breast imaging study in 1 to 11 months (generally in 6 months).

# concept[].display
History of breast augmentation, asymptomatic

# concept[].definition
Prior breast augmentation (breast enlargement) and is not presenting with any symptoms.

# concept[].definition
Review or second opinion made on an image performed outside of the facility.

# concept[].display
Additional evaluation requested from abnormal screening study

# concept[].definition
Additional breast imaging performed at the time of the patient's screening mammogram.

# concept[].definition
Patient has had previous benign breast biopsies.

# concept[].display
Personal history of breast cancer with breast conservation therapy

# concept[].definition
Patient has had a prior surgery such as a lumpectomy or quadrantectomy to remove malignant breast tissue, but breast tissue remains.

# concept[].definition
The results of a physical examination performed on the patient, possibly including the results of inspection, palpation, auscultation, or percussion.

# concept[].definition
The result of assessing the current imaging study in comparison to previous imaging studies.

# concept[].definition
An abnormality observed during ductography where the ductal system within the breast fills in an abnormal pattern. Ductography is an imaging study in which a radio opaque contrast media is introduced into the ductal system of the breast through the nipple and images of the ductal system are obtained.

# concept[].definition
During ductography an observation of more than one filling abnormality within the breast ductal system.

# concept[].definition
An abnormality observed during ductography where the ductal system within the breast terminates in an unusual fashion.

# concept[].definition
Abnormal flowage of contrast media within the breast noted on ductography.

# concept[].definition
An abnormality observed during ductography where the ductal system within the breast appears narrow.

# concept[].definition
During ductography an observation of the contrast media filling a cyst within the breast.

# concept[].definition
The area and line within the anatomy through which a needle or instrument passes during an interventional procedure.

# concept[].definition
The line within the anatomy from the lower outer to the upper inner aspect.

# concept[].definition
The line within the anatomy from the lower inner to the upper outer aspect.

# concept[].definition
The line within the anatomy from the upper outer to the lower inner aspect.

# concept[].definition
The line within the anatomy from the upper inner to the lower outer aspect.

# concept[].definition
The number of times a biopsy instrument is passed through an area of interest.

# concept[].definition
The number of biopsy specimens obtained from an interventional procedure.

# concept[].definition
An indicator of whether or not a biopsy or localizing needle in an interventional procedure is seen to be in the area of interest.

# concept[].definition
The number of localizing needles placed around the area of interest in an interventional procedure.

# concept[].definition
An indicator of whether or not an incision was made in the anatomy during an interventional procedure.

# concept[].definition
An indicator of whether or not a radio opaque microclip was placed in the anatomy during an interventional procedure.

# concept[].definition
An indicator of the degree of success of an interventional procedure.

# concept[].display
Target completely contained in the specimen

# concept[].definition
An indicator that during an interventional procedure the area of interest was fully excised and is noted in the resultant biopsy specimen.

# concept[].display
Target partially obtained in the specimen

# concept[].definition
An indicator that during an interventional procedure the area of interest was partially excised and is noted in the resultant biopsy specimen.

# concept[].definition
An indicator that following an interventional procedure the area of interest is not seen in the resultant biopsy specimen.

# concept[].definition
An indicator that following an interventional procedure the targeted calcifications are noted in the resultant biopsy specimen.

# concept[].definition
An indicator that during an interventional procedure the area of interest was fully excised and is noted in the resultant biopsy specimen.

# concept[].definition
An indicator that during an interventional procedure the area of interest was partially excised and is noted in the resultant biopsy specimen.

# concept[].definition
An indicator that during an interventional procedure fluid was successfully aspirated.

# concept[].definition
Color that is tinged with the color of blood.

# concept[].definition
An indicator of whether or not the fluid obtained during an interventional procedure contains red blood cells.

# concept[].definition
An indicator of whether or not fluid during an interventional procedure was sent for cytological analysis or simply discarded.

# concept[].definition
An indicator that fluid obtained during an interventional procedure was sent to a laboratory for analysis.

# concept[].definition
An indicator that fluid obtained during an interventional procedure was discarded.

# concept[].definition
A radiopaque density noted during diagnostic imaging that has associated calcific densities.

# concept[].definition
A fluid-filled sac with greater than normal characteristics.

# concept[].definition
Supporting evidence for interpretation results of an interventional procedure.

# concept[].definition
A descriptor that further qualifies or characterizes a type of procedure.

# concept[].definition
An indicator of the gravity of a problem experienced by a patient, related to a procedure that was performed.

# concept[].definition
Distance from the hub or bushing to the tip of the needle.

# concept[].definition
The collection of observations and findings from pathologic analysis.

# concept[].definition
The date and time that the sample was collected from the patient.

# concept[].definition
Indicates that the margin of the biopsy specimen was not involved with the tumor.

# concept[].definition
Indicates that the margin of the biopsy specimen was involved with the tumor.

# concept[].definition
Indicates whether the nipple was involved in an interventional procedure or pathologic analysis.

# concept[].definition
Indicates the number of lymph nodes removed.

# concept[].definition
Indicates the number of lymph nodes removed that contain cancer cells.

# concept[].definition
The result of a test for the presence of a protein that binds with estrogen.

# concept[].definition
The result of a test for the presence of a protein that binds with progesterone.

# concept[].definition
Indicates the percentage of cells in S phase. Cell division is defined by phases; the S phase is the stage during which DNA replicates.

# concept[].definition
The visible emission of non-bloody fluid from the nipple.

# concept[].definition
The inability to discern normal versus abnormal breast tissue during palpation.

# concept[].definition
An indication that a patient has or had a malignant occurrence in an area of the body other than the breast.

# concept[].definition
A salt water filled prosthetic device implanted in the breast.

# concept[].definition
A polymer based (plastic) prosthetic device implanted in the breast.

# concept[].definition
The introduction of polymeric organic silicon based material through the skin, as for breast augmentation or reconstruction.

# concept[].definition
A prosthetic device that contains more than one material implanted in the breast.

# concept[].definition
A breast implant placed in front of the pectoralis major muscle.

# concept[].definition
A breast implant placed behind the pectoralis major muscle.

# concept[].definition
Using X-Ray technique and a superimposed set of crossed lines for detection or placement.

# concept[].definition
Using X-Ray technique and a superimposed aperture for detection or placement.

# concept[].definition
Using physical touch for detection or placement.

# concept[].definition
The performance of a biopsy procedure using a vacuum device attached to the biopsy needle.

# concept[].definition
Unusual or unexpected emission of fluid.

# concept[].definition
Having experienced no adverse medical conditions related to or resulting from an interventional procedure.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is Tis, regional lymph node is N0, and distant metastasis is M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is T1, regional lymph node is N0, and distant metastasis is M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is T0 or T1, with regional lymph node N1 and distant metastasis is M0, or T2 with N0 and M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is T2, with regional lymph node N1 and distant metastasis is M0, or T3 with N0 and M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is T0, T1 or T2, with regional lymph node N2 and distant metastasis is M0, or T3 with N1 or N2 and M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is T4, regional lymph node is N0, N1 or N2, and distant metastasis is M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is any T value, regional lymph node is N3, and distant metastasis is M0.

# concept[].definition
TNM grouping of tumor stage, from AJCC, where primary tumor is any T value, regional lymph node is any N value, and distant metastasis is M1.

# concept[].definition
Histologic tumor grade (sometimes called Scarff-Bloom-Richardson grade) is based on the arrangement of the cells in relation to each other -- whether they form tubules, how closely they resemble normal breast cells (nuclear grade) and how many of the cancer cells are in the process of dividing (mitotic count).

# concept[].definition
Breast prosthetic devices are intact, not leaking, and are in a normal shape and form.

# concept[].definition
Breast prosthetic devices are not symmetric, equal, corresponding in form, or are in one breast (unilateral).

# concept[].definition
Fibrous or calcific contracture of the tissue capsule that forms around a breast prosthetic device.

# concept[].definition
Breast prosthetic device is twisted out of normal shape or form.

# concept[].definition
Silicone from breast prosthetic device found in lymphatic tissue.

# concept[].definition
Silicone found in breast tissue outside of the prosthetic capsule or implant membrane.

# concept[].definition
Protrusion of part of the structure normally encapsulating the content of the breast prosthetic device.

# concept[].definition
Evidence of removal of a breast prosthetic device.

# concept[].display
Relevant Patient Information for Breast Imaging

# concept[].definition
Historical patient health information of interest to the breast health clinician.

# concept[].definition
Information regarding usage by the patient of certain medications, such as hormones.

# concept[].definition
Interventional or non-interventional procedures previously performed on the patient, such as breast biopsies.

# concept[].definition
Abnormal conditions experienced by the patient that serve as the reason for performing a procedure, such as a physical breast examination.

# concept[].definition
Personal, familial, and other health factors that may indicate an increase in the patient's chances of developing a health condition or disease, such as breast cancer.

# concept[].definition
A classification of a medicinal substance, such as hormonal contraceptive or antibiotic.

# concept[].definition
Historical patient health information for general purpose use.

# concept[].display
Age when first menstrual period occurred

# concept[].definition
The age of the patient at the first occurrence of menses.

# concept[].definition
The age of the patient at the time of her first full term pregnancy.

# concept[].definition
The age of the patient at the cessation of menses.

# concept[].definition
The age of the patient at the time her uterus was removed.

# concept[].definition
The age of the patient at the time she had her left ovary removed.

# concept[].definition
The age of the patient at the time she had her right ovary removed.

# concept[].definition
The age of a patient on the first occurrence of an event, such as the first use of a medication.

# concept[].definition
The age of a patient on the last occurrence of an event, such as the last use of a medication.

# concept[].definition
The date and time of the first occurrence of an event, such as the first use of a medication.

# concept[].definition
The date and time of the last occurrence of an event, such as the last use of a medication.

# concept[].definition
An indicator of whether an event is still in progress, such as the use of a medication or substance, or environmental exposure.

# concept[].definition
Product name of a device or substance, such as medication, to identify it as the product of a single firm or manufacturer.

# concept[].definition
A descriptor that further qualifies or characterizes a risk factor.

# concept[].definition
A prior non-interventional study or interventional procedure performed on a patient.

# concept[].definition
Describes the pregnancy state of a referenced subject.

# concept[].definition
A symptom experienced by a patient that is used as the reason for performing a study or procedure.

# concept[].definition
The function of the individual who is reporting information on a patient, which could be a specific health care related profession, the patient him/herself, or a relative or friend.

# concept[].definition
The date and time that a symptom was noted.

# concept[].definition
The date and time of the most recent evaluation of an indicated problem.

# concept[].definition
A patient's biological relative who exhibits a health factor that may indicate an increase in the patient's chances of developing a particular disease or medical problem.

# concept[].definition
The age at which an individual experienced a specific event, such as breast cancer.

# concept[].definition
The current stage of an individual in her gynecological development.

# concept[].definition
An indicator of paternal or maternal relationship.

# concept[].definition
Relating to biological female parentage.

# concept[].definition
A gynecological hormone for which the specific type is not specified.

# concept[].definition
An indicator of whether or not a patient ever provided breast milk to her offspring.

# concept[].definition
The average length of time that a patient provided breast milk to her offspring.

# concept[].definition
Information regarding usage by the patient of certain legal or illicit substances.

# concept[].definition
A classification of a substance, such as alcohol or a legal or illicit drug.

# concept[].definition
Information regarding exposure of the patient to potentially harmful environmental factors.

# concept[].definition
A classification of a potentially harmful substance or gas in a subject's environment, such as asbestos, lead, or carcinogens.

# concept[].definition
Previous Structured Reports that could have relevant information for a current imaging service request.

# concept[].definition
An indication that a patient has had a previous malignancy of the breast.

# concept[].definition
Indicates a previous occurrence of cancer of the lining of the uterus.

# concept[].definition
Indicates a previous occurrence of cancer of the lining of the ovary.

# concept[].display
History of high risk lesion on previous biopsy

# concept[].definition
Indicates a prior diagnosis of pre-cancerous cells or tissue removed for pathologic evaluation.

# concept[].definition
A female patient whose menstrual periods have ceased.

# concept[].definition
A female patient whose first child was born after the patient was 30 years old.

# concept[].definition
The first level genetic marker indicating risk for breast cancer.

# concept[].definition
The second level genetic marker indicating risk for breast cancer.

# concept[].definition
The third level genetic marker indicating risk for breast cancer.

# concept[].definition
A patient's biological aunt, grandmother, or female cousin was diagnosed with breast cancer. Definition from BI-RADS®.

# concept[].display
Intermediate family history of breast cancer

# concept[].definition
A patient's biological mother or sister was diagnosed with breast cancer after they had gone through menopause. Definition from BI-RADS®.

# concept[].display
Very strong family history of breast cancer

# concept[].definition
A patient's biological mother or sister was diagnosed with breast cancer before they had gone through menopause, or more than one of the patient's first-degree relatives (biological mother or sister) were diagnosed with breast cancer after they had gone through menopause. Definition from BI-RADS®.

# concept[].definition
Previous diagnosis of a malignancy of the prostate gland in a biological relative.

# concept[].definition
The health record of a patient's biological relatives is not known.

# concept[].definition
The study of cells obtained from fluid emitted from the breast.

# concept[].definition
A developmental abnormality resulting in an abnormal shape of the uterus.

# concept[].definition
A naturally occurring premature expulsion from the uterus of the products of conception - the embryo or a nonviable fetus.

# concept[].definition
An ailment/abnormality or state of the female reproductive tract.

# concept[].definition
A surgical operation performed on any portion of the female reproductive tract.

# concept[].definition
Prior pregnancy with a low birth weight baby or a fetus with Intrauterine Growth Restriction or Retardation.

# concept[].definition
History of at least one prior pregnancy with fetal anatomic abnormality(s).

# concept[].display
Previous RH negative or blood dyscrasia at birth

# concept[].definition
History of delivering a Rhesis Isoimmunization affected child(ren) or a child(ren) with another blood disorder.

# concept[].definition
History of at least one pregnancy that contained more than one fetus.

# concept[].definition
At least one fetus of this pregnancy has an anatomic abnormality(s) that is known to exist, or a "marker" is present that suggests the abnormality(s) may be present.

# concept[].definition
Biological relatives have previously conceived a fetus with an anatomic abnormality(s).

# concept[].definition
A subjective descriptor for an elevated amount of exposure, use, or dosage, incurring high risk of adverse effects.

# concept[].definition
A subjective descriptor for a moderate amount of exposure, use, or dosage, incurring medium risk of adverse effects.

# concept[].definition
A subjective descriptor for a limited amount of exposure, use, or dosage, incurring low risk of adverse effects.

# concept[].definition
A measurement of the rate of occurrence of which a patient takes a certain medication.

# concept[].definition
The quantity per unit of time that a patient was or is being exposed to an environmental irritant.

# concept[].definition
The quantity per unit of time that a medication or substance was or is being used.

# concept[].definition
A qualitative descriptor for the amount of a medication that was or is being taken.

# concept[].definition
A qualitative descriptor for the amount of present or past exposure to an environmental irritant.

# concept[].definition
A qualitative descriptor for the amount of a medication or substance that was or is being used.

# concept[].definition
A qualitative descriptor for the frequency with which a medication was or is being taken.

# concept[].definition
A qualitative descriptor for the frequency of present or past exposure to an environmental irritant.

# concept[].definition
A qualitative descriptor for the frequency with which a medication or substance was or is being used.

# concept[].definition
Patient is not known to have been exposed to or used the substance or medication.

# concept[].definition
Patient returns for additional images to improve the quality of the most recent study.

# concept[].definition
Patient returns for additional images to clarify findings from the most recent study.

# concept[].display
Recall for patient symptoms/ clinical findings

# concept[].definition
Patient returns for additional images to clarify symptoms or signs reported by the patient or a healthcare professional at the time of the most recent study.

# concept[].definition
Number of births with low birth weight or intrauterine growth restriction.

# concept[].definition
Filter that transmits green light while blocking the other colors, typically centered at 510-540 nm

# concept[].definition
Filter that transmits red light while blocking the other colors, typically centered at 630-680 nm

# concept[].definition
Filter that transmits blue while blocking the other colors, typically centered at 460-480 nm

# concept[].definition
A filter of 560nm that is used for retinal imaging and can provide good contrast and good visibility of the retinal vasculature

# concept[].definition
A filter of 490nm that is used for retinal imaging because of excessive scattering of some retinal structures at very short wavelengths

# concept[].definition
Filter that transmits the infrared spectrum, which is light that lies outside of the visible spectrum, with wavelengths longer than those of red light, while blocking visible light

# concept[].definition
A filter that reduces reflections from non-metallic surfaces such as glass or water by blocking light waves that are vibrating at selected angles to the filter.

# concept[].definition
Joslin NM-1 is a 45 degree field focused centrally between the temporal margin of optic disc and the center of the macula: Center the camera on the papillomacular bundle midway between the temporal margin of the optic disc and the center of the macula. The horizontal centerline of the image should pass directly through the center of the disc.

# concept[].definition
Joslin NM-2 is a 45 degree field focused superior temporal to the optic disc: Center the camera laterally approximately one-half disc diameter temporal to the center of the macula. The lower edge of the field is tangent to a horizontal line passing through the upper edge of the optic disc. The image is taken temporal to the macula but includes more retinal nasal and superior to the macula than standard field 2.

# concept[].definition
Joslin NM-3 is a 45 degree field focused nasal to the optic disc: This field is nasal to the optic disc and may include part of the optic disc. The horizontal centerline of the image should pass tangent to the lower edge of the optic disc.

# concept[].definition
A broad or "soft" light supplied from a single source.

# concept[].definition
A slit reflected light microscope, which has the ability to form an image of the back scattered light from the eye in a sagittal plane. Scheimpflug cameras are able to achieve a wide depth of focus by employing the "Sheimpflug principle" where the lens and image planes are not parallel with each other. Rotating Sheimplug cameras are able to generate three-dimensional images and calculate measurements of the anterior chamber of the eye.

# concept[].definition
Lighting condition approximately 0.04 lux.

# concept[].definition
Lighting condition approximately 40 lux.

# concept[].definition
Calculated from values of entrance exposure in air, the X-Ray beam quality (half-value layer), and compressed breast thickness, is the energy deposited per unit mass of glandular tissue averaged over all the glandular tissue in the breast.

# concept[].definition
The primary material in the anode of an X-Ray source.

# concept[].definition
The average thickness of the body part examined when compressed, if compression has been applied during X-Ray exposure.

# concept[].definition
Thickness of Aluminum required to reduce the X-Ray output at the patient entrance surface by a factor of two.

# concept[].definition
An anti-scatter device based on radiation absorbing strips above the detector.

# concept[].definition
Exposure measurement in air at the reference point that does not include back scatter, according to MQCM 1999.

# concept[].definition
Average Glandular Dose to a single breast accumulated over multiple images.

# concept[].definition
Value of the control variable used to parametrize the Automatic Exposure Control (AEC) closed loop.

# concept[].definition
A processing algorithm used to reduce the effect of X-Ray scatter on image quality, similar to the use of a physical X-Ray anti-scatter grid.

# concept[].definition
A physical X-Ray anti-scatter grid that does not move during exposure.

# concept[].definition
A physical X-Ray anti-scatter grid with radiation absorbing strips that are focused toward the focal spot, to eliminate grid cutoff.

# concept[].definition
A physical X-Ray anti-scatter grid that is designed to move during exposure, to eliminate the appearance of grid lines on the image.

# concept[].definition
A physical X-Ray anti-scatter grid with radiation absorbing strips that are parallel to each other and that is used only with long source to image distances.

# concept[].definition
A physical X-Ray anti-scatter grid with crossed radiation absorbing strips used for more complete cleanup of scatter radiation.

# concept[].definition
No physical X-Ray anti-scatter grid was used due to low scatter conditions.

# concept[].definition
The compression force applied to the body part during exposure.

# concept[].definition
The average compression pressure applied to the body part during exposure.

# concept[].definition
The area of the body part to which compression has been applied during exposure.

# concept[].definition
The spectacle prescription for a patient.

# concept[].definition
Refractive measurements of the eye to correct for inability to focus at near while wearing the distance prescription.

# concept[].definition
Refractive measurements of the eye to correct for inability to focus at intermediate distance while wearing the distance prescription.

# concept[].definition
Refractive measurements of the eye to correct for inability to focus at the specified distance while wearing the distance prescription.

# concept[].definition
The power of a prism to bend light in the horizontal direction, in prism diopters.

# concept[].definition
Direction of the base of a horizontal prism -- either in (toward the nose), or out (away from the nose).

# concept[].definition
The power of a prism to bend light in the vertical direction, in prism diopters.

# concept[].definition
Direction of the base of a vertical prism -- either up, or down.

# concept[].definition
Distance in mm between the pupils when the patient's object of regard is in the distance.

# concept[].definition
Distance in mm between the pupils when the patient's object of regard is at near.

# concept[].definition
Small Incision Lenticule Extraction. Refractive surgery procedure where a thin lenticule is cleaved from the corneal stroma using a femtosecond laser and then extracted through a small incision in the corneal periphery.

# concept[].definition
A patient's vision with the correction measured by an autorefractor in place.

# concept[].definition
A patient's vision with whichever vision correction the patient customarily wears.

# concept[].definition
A patient's vision with the final spectacle prescription in place.

# concept[].definition
The spectacle prescription for the right eye.

# concept[].definition
The spectacle prescription for the left eye.

# concept[].display
Macular Grid Thickness and Volume Report

# concept[].definition
A macular grid thickness and volume report for a patient. The macular grid is an analytic tool described in .

# concept[].display
Number of Images Used for Macular Measurements

# concept[].definition
Number of images used for the macular grid measurement.

# concept[].definition
Number of samples used per Image for analysis.

# concept[].definition
A numeric rating of the quality of the entire analysis with respect to grading and diagnostic purposes.Higher numbers indicate greater quality.

# concept[].definition
A numeric rating of the quality of an entire image set with respect to grading and diagnostic purposes.Higher numbers indicate greater quality.

# concept[].definition
Tear film or drops affecting test quality.

# concept[].display
Visual Fixation Quality During Acquisition

# concept[].definition
The assessment of the centricity and persistence of the visual fixation (direction of gaze) during the acquisition.

# concept[].definition
The reason why the patient's visual fixation was not steady or was indeterminate.

# concept[].definition
The reason why the macular grid measurements may be questionable.

# concept[].definition
Identifier of container (box, block, microscope slide, etc.) for the specimen under observation.

# concept[].definition
Type of processing that tissue specimen underwent.

# concept[].definition
Description of the individual step in the tissue processing sequence.

# concept[].definition
Method of sampling used to derive specimen from its parent.

# concept[].definition
Identifier of the parent specimen that gave rise to the current specimen.

# concept[].definition
Assigning authority for parent specimen's identifier.

# concept[].definition
Parent specimen type that gave rise to current specimen.

# concept[].definition
Description of coordinate system and origin reference point on parent specimen, or parent specimen container, or image used for localizing the sampling site or location within container or image.

# concept[].definition
Reference to image of parent specimen localizing the sampling site; may include referenced Presentation State object.

# concept[].definition
Location of sampling site of specimen (nominal center) relative to the Position Frame of Reference.

# concept[].definition
Location of sampling site of specimen (nominal center) relative to the Position Frame of Reference.

# concept[].definition
Location of sampling site of specimen (nominal center) relative to the Position Frame of Reference.

# concept[].definition
Description of specimen location, either in absolute terms or relative to the Position Frame of Reference.

# concept[].definition
Location of specimen (nominal center) relative to the Position Frame of Reference in the X dimension.

# concept[].definition
Location of specimen (nominal center) relative to the Position Frame of Reference in the Y dimension.

# concept[].definition
Location of specimen (nominal center) relative to the Position Frame of Reference in the Z dimension.

# concept[].definition
Assigning authority for specimen identifier.

# concept[].display
Dissection with entire specimen submission

# concept[].definition
Dissection of specimen with submission of all its sections for further processing or examination.

# concept[].definition
Dissection of specimen with submission of representative sections for further processing or examination.

# concept[].definition
A workflow step, during which tissue specimens are stored in a climate-controlled environment.

# concept[].definition
Transmission illumination method for specimen microscopy.

# concept[].definition
Reflection illumination method for specimen microscopy.

# concept[].definition
Epifluorescence illumination method for specimen microscopy.

# concept[].definition
Brightfield illumination method for specimen microscopy.

# concept[].definition
Darkfield illumination method for specimen microscopy.

# concept[].definition
Oblique illumination method for specimen microscopy.

# concept[].definition
Phase contrast illumination method for specimen microscopy.

# concept[].definition
Differential interference contrast method for specimen microscopy.

# concept[].definition
Total internal reflection fluorescence method for specimen microscopy.

# concept[].definition
A method of obtaining ophthalmic axial measurements that uses ultrasound, and that requires applanation of the cornea.

# concept[].definition
A method of obtaining ophthalmic axial measurements that uses ultrasound, and that requires immersion of the patient's eye in fluid as he lies in a supine position.

# concept[].definition
A method of obtaining ophthalmic axial measurements that uses light.

# concept[].definition
Measurements taken of the corneal curvature using a manual keratometer.

# concept[].definition
Measurements taken of the corneal curvature using an automated keratometer.

# concept[].definition
Simulated Keratometry measurements derived from corneal topography.

# concept[].definition
Corneal power measurements using Scheimpflug camera.

# concept[].definition
Keratometry Measurements DICOM SOP Instance.

# concept[].definition
Method of determining the total cornea power from measuring the curvature of both anterior and posterior surface of the cornea.

# concept[].display
Posterior Cornea Surface Measurement Method

# concept[].definition
Method of measuring the curvature of posterior surface of the cornea and determining its refractive power.

# concept[].definition
The Haigis IOL calculation formula.Haigis W, Lege B, Miller N, Schneider B. Comparison of immersion ultrasound biometry and partial coherence interferometry for intraocular lens calculation according to Haigis. Graefes Arch Clin Exp Ophthalmol 2000;238:765-73.

# concept[].definition
The Haigis-L IOL calculation formula.Haigis W. Intraocular lens calculation after refractive surgery for myopia: Haigis-L formula. J Cataract Refract Surg. 2008 Oct;34(10):1658-63.

# concept[].definition
The Holladay 1 IOL calculation formula.Holladay JT, Prager TC, Chandler TY, Musgrove KH, Lewis JW, Ruiz RS. A three-part system for refining intraocular lens power calculations. J Cataract Refract Surg. 1988; 14:17-24.

# concept[].definition
The Hoffer Q IOL calculation formula. Hoffer KJ. The Hoffer Q formula: a comparison of theoretic and regression formulas. J Cataract Refract Surg 1993;19:700-12. Errata. J Cataract Refract Surg 1994;20:677 and 2007;33:2-3.

# concept[].definition
The Olsen IOL calculation formula. Olsen T. Calculation of intraocular lens power: a review. Acta Ophthalmol. Scand. 2007: 85: 472-485.

# concept[].definition
The SRKII IOL calculation formula. Sanders DR, Retzlaff J, Kraff MC. Comparison of the SRK II formula and other second generation formulas. J Cataract Refract Surg. 1988 Mar;14(2):136-41.

# concept[].definition
The SRK-T IOL calculation formula.Retzlaff JA, Sanders DR, Kraff MC. Development of the SRK/T intraocular lens implant power calculation formula. J Cataract Refract Surg 1990;16:333-40. Erratum 1990;16:528.

# concept[].definition
The "ACD Constant" used in IOL calculation.

# concept[].definition
The "Haigis a0" constant used in IOL calculation.

# concept[].definition
The "Haigis a1" constant used in IOL calculation.

# concept[].definition
The "Haigis a2" constant used in IOL calculation.

# concept[].definition
The "Hoffer pACD Constant" used in IOL calculation.

# concept[].definition
The "Surgeon Factor" constant used in IOL calculation.

# concept[].definition
Anterior chamber depth defined as the front of the cornea to the front of the lens.

# concept[].definition
Anterior chamber depth defined as the back of the cornea to the front of the lens.

# concept[].definition
Refers to the anterior lens when there are two lenses in the eye. The distance, in mm, from the anterior surface of the lens to the posterior surface of the lens.

# concept[].definition
Refers to the posterior lens when there are two lenses in the eye. The distance, in mm, from the anterior surface of the lens to the posterior surface of the lens.

# concept[].definition
Value obtained from measurements taken by the device creating this SOP Instance.

# concept[].definition
Value obtained by data transfer from an external source - not from measurements taken by the device providing the value.

# concept[].definition
Refractive Measurements DICOM SOP Instance.

# concept[].definition
Autorefraction Measurements DICOM SOP Instance.

# concept[].definition
Standard Deviation is a simple measure of the variability of data.

# concept[].definition
Signal to Noise Ratio of the data samples taken to create a measurement.

# concept[].definition
Projection from 2D image pixels to 3D Cartesian coordinates based on a spherical mathematical model.

# concept[].definition
Mapping from 2D image pixels to 3D Cartesian coordinates based on measurements of the retinal surface.

# concept[].definition
Test pattern, nominally covering an area within 24° of fixation. Consists of 54 test points a minimum of 3° from each meridian and placed 6° apart.The "-2" distinguishes this from another 24° pattern (no longer supported).

# concept[].definition
Test pattern, nominally covering an area within 10° of fixation. Consists of 68 test points a minimum of 1° from each meridian and placed 2° apart.The "-2" in this case indicates its point layout to be similar to the 30-2 and 24-2.

# concept[].definition
Test pattern consisting of test point locations within 30° of fixation. Consists of 76 test points a minimum of 3° from each meridian and placed 6° apart.The "-2" distinguishes this from another 30° pattern (no longer supported).

# concept[].definition
Test pattern consisting of 60 test point locations between 30° and 60° of fixation a minimum of 6° from each meridian and placed 12° apart.The "-4" distinguishes this from a similar 60° pattern having 4 additional points.

# concept[].definition
Test pattern consisting of 16 test point locations within 10° of fixation a minimum of 1° from each meridian and placed 2° apart.

# concept[].display
Visual Field Central 40 Point Test Pattern

# concept[].definition
Test pattern consisting of 40 test point locations within 30° of fixation that spread out radially from fixation.

# concept[].display
Visual Field Central 76 Point Test Pattern

# concept[].definition
Test pattern consisting of 76 test point locations within 30° of fixation a minimum of 3° from each meridian and placed 6° apart.

# concept[].display
Visual Field Peripheral 60 Point Test Pattern

# concept[].definition
Test pattern consisting of 60 test point locations between 30° and 60° of fixation a minimum of 6° from each meridian and placed 12° apart.

# concept[].display
Visual Field Full Field 81 Point Test Pattern

# concept[].definition
Test pattern consisting of 81 test point locations within 60° of fixation that spread out radially from fixation.

# concept[].display
Visual Field Full Field 120 Point Test Pattern

# concept[].definition
Test pattern consisting of 120 test point locations within 60° of fixation that spread out radially from fixation, concentrated in the nasal hemisphere.

# concept[].definition
Test pattern for Glaucoma and general visual field assessment with 59 test locations of which 16 test locations are in the macular area (up to 10° eccentricity) and where the density of test location is reduced with eccentricity. The test can be extended with the inclusion of 14 test locations between 30° and 60° eccentricity, 6 of which are located at the nasal step.

# concept[].definition
Test pattern for the macular area. Orthogonal test pattern with 0.7° spacing within the central 4° of eccentricity and reduced density of test locations between 4 and 10, 5° of eccentricity. 81 test locations over all. The test can be extended to include the test locations of the Visual Field G Test Pattern between 10, 5° and 60°.

# concept[].definition
Full field test pattern with 48 test locations from 0-30° and 82 test locations from 30-70°. Reduced test point density with increased eccentricity. Can be combined with screening and threshold strategies.

# concept[].definition
Low Vision Central. Orthogonal off-center test pattern with 6° spacing. 75 test locations within the central 30°. Corresponds with the 32/30-2 excluding the 2 locations at the blind spot, including a macular test location. The LVC is linked with a staircase threshold strategy starting at 0 dB intensity and applies stimulus area V.

# concept[].definition
General test corresponding to the 30-2 but excluding the 2 test locations in the blind spot area, hence with 74 instead of 76 test locations.

# concept[].display
Visual Field SITA-Standard Test Strategy

# concept[].definition
Swedish Interactive Thresholding Algorithm (SITA). Strategy gains testing efficiency through use of visual field and information theory models.In: Bengtsson B, Olsson J, Heijl A, Rootzen H. A new generation of algorithms for computerized threshold perimetry, SITA. Acta Ophthalmologica Scandinavica, 1997, 75: 368-375.

# concept[].definition
Adaptation of SITA testing methods to Blue-Yellow testing.

# concept[].definition
Similar to SITA-Standard but with less strict criteria for closing test points. Intended for patients who must be tested in the shortest possible time.In: Bengtsson B, Hejl A. SITA Fast, a new rapid perimetric threshold test. Description of methods and evaluation in patients with manifest and suspect glaucoma. Acta Ophthalmologica Scandinavica, 1998, 76: 431-437.

# concept[].display
Visual Field Full Threshold Test Strategy

# concept[].definition
Threshold test algorithm that determines a patient's sensitivity at each test point in the threshold test pattern by adjusting intensity by 4 dB steps until the patient changes their response, and then adjusts the intensity in the opposite direction by 2 dB steps until the patient changes their response again. The last stimulus seen by the patient is recognized as the threshold for that point.The starting values are determined by first thresholding a "primary" point in each quadrant then using the results of each primary point to determine the starting values for neighboring points.

# concept[].definition
Similar to the Full Threshold algorithm except that it steps by 3 dB and only crosses the threshold only once.In: Flanagan JG, Wild JM, Trope GE. Evaluation of FASTPAC, a new strategy for threshold estimation with the Humphrey Field Analyzer, in a glaucomatous population. Ophthalmology, 1993, 100: 949-954.

# concept[].display
Visual Field Full From Prior Test Strategy

# concept[].definition
Identical to Full Threshold except that starting values are determined by the results of a previous test performed using the same test pattern and the Full Threshold test strategy.

# concept[].definition
Similar to FastPac except that the steps are pseudo-dynamic (differ based on the intensity of the last presentation).

# concept[].definition
Suprathreshold testing strategy, in which each point is initially tested using stimulus that is 6 dB brighter than the expected hill of vision. If the patient does not respond, the stimulus is presented a second time at the same brightness. If the patient sees either presentation, the point is marked as "seen"; otherwise it is marked as "not seen".

# concept[].definition
An extension of the two-zone strategy in which test points where the second stimulus is not seen are presented with a third stimulus at maximum brightness.

# concept[].display
Visual Field Quantify-Defects Test Strategy

# concept[].definition
An extension of the two-zone strategy, in which test points where the second stimulus is not seen receive threshold testing to quantify the depth of any detected scotomas.

# concept[].definition
Tendency Oriented Perimetry. Fast thresholding algorithm. Test strategy makes use of the interaction between neighboring test locations to reduce the test time compared to normal full threshold strategy by 60-80%.In: Morales J, Weitzman ML, Gonzalez de la Rosa M. Comparison between Tendency-Oriented Perimetry (TOP) and octopus threshold perimetry. Ophthalmology, 2000, 107: 134-142.

# concept[].definition
Dynamic strategy is a fast thresholding strategy reducing test duration by adapting the dB step sizes according to the frequency-of-seeing curve of the threshold. Reduction of test time compared to normal full threshold strategy 30-50%.

# concept[].definition
Traditional full threshold staircase strategy. Initial intensities are presented, based on anchor point sensitivities in each quadrant and based on already known neighboring sensitivities. In a first run, thresholds are changed in 4dB steps until the first response reversal. Then the threshold is changed in 2 dB steps until the second response reversal. The threshold is calculated as the average between the last seen and last not-seen stimulus, supposed to correspond with the 50% point in the frequency-of-seeing curve.

# concept[].definition
One level screening test: Each test location is tested with a single intensity. The result is shown as seen or not-seen. The intensity can either be a 0 dB stimulus or a predefined intensity.

# concept[].definition
Two level screening test: Each test location is initially tested 6 dB brighter than the age corrected normal value.

# concept[].definition
Low Vision Strategy is a full threshold normal strategy with the exception that it starts at 0 dB intensity and applies stimulus area V.

# concept[].definition
German Adaptive Threshold Estimation is a fast strategy based on a modified 4-2 staircase algorithm, using prior visual fields to calculate the starting intensity. In: Chiefer U, Pascual JP, Edmunds B, Feudner E, Hoffmann EM, Johnson CA, Lagreze WA, Pfeiffer N, Sample PA, Staubach F, Weleber RG, Vonthein R, Krapp E, Paetzold J. Comparison of the new perimetric GATE strategy with conventional full-threshold and SITA standard strategies. Investigative Ophthalmology and Visual Science, 2009, 51: 488-494.

# concept[].definition
Similar to GATE. The i stands for initial. If there was no prior visual field test to calculate the starting values, an anchor point method is used to define the local start values.

# concept[].definition
A test started as two level screening test. In the course of the test, the threshold of relative defects and/or normal test locations has been quantified using the dynamic threshold strategy.

# concept[].definition
A test started as two level screening test. In the course of the test, the threshold of relative defects and/or normal test locations has been quantified using the normal full threshold strategy.

# concept[].display
Visual Field Fast Threshold Test Strategy

# concept[].definition
Takes neighborhood test point results into account and offers stimuli with an adapted value to save time.

# concept[].definition
Continuous Luminance Incremental Perimetry, which measures at first the individual reaction time of the patient and threshold values in every quadrant. The starting value for the main test is slightly below in individual threshold.

# concept[].definition
A supra threshold screening strategy. The starting stimuli intensities depend on the classification of the patient's visual hill by measuring the central (fovea) or peripheral (15° meridian) threshold. The result of each dot slightly underestimates the sensitivity value (within 5 dB).

# concept[].definition
Mode for determining the starting luminance for screening test points - the starting luminance s is chosen based on the age of the patient.

# concept[].definition
Mode for determining the starting luminance for screening test points - the starting luminance is chosen based on the results of thresholding a set of "primary" test points (one in each quadrant).

# concept[].definition
Mode for determining the starting luminance for screening test points - in this case, all starting luminance is set to the same value.

# concept[].definition
Mode for determining the starting luminance for screening test points - the starting luminance is chosen based on the result of the foveal threshold value.

# concept[].definition
Mode for determining the starting luminance for screening test points - the starting luminance is chosen based on the result of four threshold values measured near the 15° meridian (one in each quadrant).

# concept[].definition
Real time evaluation of the camera image to recognize blinks and fixation losses with influence on the test procedure. Blinks that interfere with stimuli presentation cause the automated repetition of such stimulus presentations. Fixation losses can be used to delay the stimulus presentation until correct fixation is regained.

# concept[].definition
A method of monitoring the patient's fixation by periodically presenting stimulus in a location on the background surface that corresponds to the patient's blind spot.

# concept[].definition
A method of monitoring the patient's fixation by presenting the stimulus to the patient's macula.

# concept[].definition
A method of monitoring the patient's fixation by observation from the examiner of the patient.

# concept[].definition
Analysis Results are outside normal limits.

# concept[].definition
Analysis Results identify abnormally high sensitivity.

# concept[].definition
Analysis Results identify general reduction in sensitivity.

# concept[].display
Borderline and general reduction in sensitivity

# concept[].definition
Analysis Results identify Borderline and general reduction in sensitivity.

# concept[].definition
Index of a patient's remaining visual field normalized for both age and generalized defect.

# concept[].definition
Estimate of the portion of a patient's visual field loss that is diffuse (i.e., spread evenly across all portions of the visual field).

# concept[].definition
Estimate of the portion of a patient's visual field loss that is local (i.e., not spread evenly across all portions of the visual field).

# concept[].definition
An analysis of asymmetry between zones of the superior and inferior visual field. It is designed to be specific for defects due to glaucoma.

# concept[].definition
The data output of an optical fixation monitoring process, consisting of a list of positive and negative numbers indicating the quality of patient fixation over the course of a visual field test. The value 0 represents the initial fixation. Negative numbers indicate a measuring error (i.e., the patient blinked). Positive numbers quantify the degree of eccentricity from initial fixation.

# concept[].definition
The Haigis Toric IOL calculation formula.Haigis, Wolfgang. Toric Iol Power Calculation. 2014.

# concept[].definition
The Haigis-L Toric IOL calculation formula.Haigis W, Intraocular lens calculation after refractive surgery for myopia: Haigis-L formula. J Cataract Refract Surg, 2008. 34(10): 1658-63. doi:10.1016/j.jcrs.2008.06.029.

# concept[].definition
The Barrett Toric IOL calculation formula.Abulafia, A., et al., Prediction of refractive outcomes with toric intraocular lens implantation. J Cataract Refract Surg, 2015. 41(5): p. 936-44. doi:10.1016/j.jcrs.2014.08.036.

# concept[].definition
The Barrett True-K IOL calculation formula.Abulafia, A., et al., Accuracy of the Barrett True-K formula for intraocular lens power prediction after laser in situ keratomileusis or photorefractive keratectomy for myopia. J Cataract Refract Surg, 2016. 42(3): p. 363-9. doi:10.1016/j.jcrs.2015.11.039.

# concept[].definition
The Barrett True-K Toric IOL calculation formula.Barrett G.D., Barrett True-K toric calculator.

# concept[].definition
The Barrett Universal II IOL calculation formula.Barrett, G.D., An improved universal theoretical formula for intraocular lens power prediction. J Cataract Refract Surg, 1993. 19: p. 713-720. doi:10.1016/S0886-3350(13)80339-2

# concept[].definition
The "Barrett Lens Factor" constant used in IOL calculation.

# concept[].definition
The "Barrett Design Factor" constant used in IOL calculation.

# concept[].definition
The Kane intraocular lens calculation formula.Connell BJ, Kane JX. Comparison of the Kane formula with existing formulas for intraocular lens power selection. BMJ Open Ophthalmol. 2019 Apr 1;4(1):e000251. doi:10.1136/bmjophth-2018-000251. PMID: 31179396; PMCID: PMC6528763.

# concept[].definition
The Kane Toric intraocular lens calculation formula.Kane JX, Connell B. A Comparison of the Accuracy of 6 Modern Toric Intraocular Lens Formulas. Ophthalmology. 2020 Nov;127(11):1472-1486. doi:10.1016/j.ophtha.2020.04.039. Epub 2020 May 1. PMID: 32371252.

# concept[].definition
The Kane Keratoconus intraocular lens calculation formula.Kane JX, Connell B, Yip H, McAlister JC, Beckingsale P, Snibson GR, Chan E. Accuracy of Intraocular Lens Power Formulas Modified for Patients with Keratoconus. Ophthalmology. 2020 Aug;127(8):1037-1042. doi:10.1016/j.ophtha.2020.02.008. Epub 2020 Apr 9. PMID: 32279887.

# concept[].definition
The Barrett Keratoconus intraocular lens calculation formula.Ton, Yokrat MD; Barrett, Graham D. MD, FRANZCO; Kleinmann, Guy MD; Levy, Adi MHA; Assia, Ehud I. MD. Toric intraocular lens power calculation in cataract patients with keratoconus. Journal of Cataract & Refractive Surgery 47(11):p 1389-1397, November 2021. doi:10.1097/j.jcrs.0000000000000638.

# concept[].definition
The Barrett Rx intraocular lens calculation formula.Barrett GD. The Barrett Rx formula: predicting IOL power based on refraction after cataract surgery. Barcelona. Spain: European Society of Cataract & Refractive Surgeons; 2015.

# concept[].definition
The Emmetropia Verifying Optical (EVO) intraocular lens calculation formula.Yeo, T.K. (2024). Emmetropia Verifying Optical (EVO) Formula. In: Aramberri, J., Hoffer, K.J., Olsen, T., Savini, G., Shammas, H.J. (eds) Intraocular Lens Calculations. Essentials in Ophthalmology. Springer, Cham. doi:10.1007/978-3-031-50666-6_40.

# concept[].definition
The Shammas no-history method using Shammas-PL IOL calculation formula.Shammas HJ, Shammas MC. No-history method of intraocular lens power calculation for cataract surgery after myopic laser in situ keratomileusis. J Cataract Refract Surg. 2007 Jan;33(1):31-6. doi:10.1016/j.jcrs.2006.08.045. PMID: 17189790.

# concept[].definition
The Camellin and Calossi IOL calculation formula.Camellin M, Calossi A. A new formula for intraocular lens power calculation after refractive corneal surgery. J Refract Surg. 2006 Feb;22(2):187-99. doi:10.3928/1081-597X-20060201-18. PMID: 16523839.

# concept[].definition
The Hill Radial Basis Function (RBF) Formula Version 3.0.Hill Radial Basis Function calculator .

# concept[].definition
The PEARL-DGS IOL calculation formula.Debellemanie`re G, Dubois M, Gauvin M, Wallerstein A, Brenner L, Rampat R, Saad A, Gatinel D. The PEARL-DGS formula: the development of an open-source machine learning-based thick IOL calculation formula. Am J Ophthalmol. 2021;232:58–69. doi:10.1016/j.ajo.2021.05.004.

# concept[].definition
An image of at least 15° angular subtend that is centered on the macula.

# concept[].definition
An image of at least 15° angular subtend that is centered on the optic disc.

# concept[].definition
An image of any angular subtend that is centered on a lesion located in any region of the fundus.

# concept[].definition
An image of at least 15° angular subtend centered midway between the disc and macula and containing at least a portion of the disc and both the disc and the macula.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator, and spanning both the superior-temporal and superior-nasal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator in the superior-temporal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator, and spanning both the superior-temporal and inferior-temporal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator in the inferior-temporal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator, and spanning both the inferior-temporal and inferior-nasal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator in the inferior-nasal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator, and spanning both the superior-nasal and inferior-nasal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the central zone and the equator in the superior-nasal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and the ora serrata, and spanning both the superior temporal and superior nasal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata in the superior-temporal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata, and spanning both the superior-temporal and inferior-temporal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata in the inferior-temporal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata, and spanning both the inferior-temporal and inferior-nasal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata in the inferior-nasal quadrant of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata, and spanning both the superior-nasal and inferior-nasal quadrants of the fundus.

# concept[].definition
An image of at least 15° angular subtend positioned between the equator and ora serrata in the superior-nasal quadrant of the fundus.

# concept[].definition
Identifies the use of physical signals with respect to time to capture information.

# concept[].definition
Identifies the use of physical signals with respect to multiple frequencies to capture information.

# concept[].definition
No compensation algorithm for corneal birefringence.

# concept[].definition
Algorithm to compensate for variability in corneal birefringence.

# concept[].definition
Measurement of the retinal surface contour relative to an assigned datum plane.

# concept[].definition
Measurement approximating the distance related to the structure between the internal limiting membrane (ILM) and the outer boarder of the retinal nerve fiber layer (RNFL).

# concept[].definition
Measurement approximating the distance related to the structure between the ILM and the outer border of the inner plexiform layer (IPL), called the ganglion cell complex (GCC).

# concept[].definition
Measurement approximating the distance related to the structure between the ILM and the inner-outer segment junction (IS-OS).

# concept[].definition
Measurement approximating the distance related to the structure between the ILM and the retinal pigment epithelium (RPE).

# concept[].definition
Measurement approximating the distance related to the structure between the ILM and the Bruch's membrane (BM).

# concept[].definition
Thickness of a component of the posterior segment of the eye.

# concept[].display
Thickness deviation category from normative data

# concept[].definition
Ophthalmic Thickness map based upon statistical significance category (such as percentile) from normative data.

# concept[].definition
Ophthalmic Thickness map based upon deviation (such as microns) from normative data.

# concept[].definition
Ophthalmic Thickness Map related to another Ophthalmic Thickness Map or another SOP Instance.

# concept[].definition
An anatomic point centered midway between the disc and fovea centralis.

# concept[].definition
Assuming the null hypothesis is true, the conditional percent probability of observing this result is not statistically significant.

# concept[].definition
Assuming the null hypothesis is true, the conditional percent probability of observing this result is statistically significant, 95% unlikely to happen by chance.

# concept[].definition
Assuming the null hypothesis is true, the conditional percent probability of observing this result is statistically significant, 98% unlikely to happen by chance.

# concept[].definition
Assuming the null hypothesis is true, the conditional percent probability of observing this result is statistically significant, 99% unlikely to happen by chance.

# concept[].definition
Assuming the null hypothesis is true, the conditional percent probability of observing this result is statistically significant, 99.5% unlikely to happen by chance.

# concept[].definition
A two dimensional representation of the axial curvature of the cornea. Axial curvature is calculated from the reciprocal of the distance from a point on a meridian normal at the point to the corneal topographer axis. Also known as sagittal curvature.

# concept[].definition
A two dimensional representation of the instantaneous curvature of the cornea. Instantaneous curvature is calculated from the reciprocal of the distance from a point on a meridian normal at the point to the center of curvature of that point. Also called tangential curvature.

# concept[].definition
A two dimensional representation of the refractive power of the cornea. Corneal refractive power is calculated using Snell's Law.

# concept[].definition
A two dimensional representation of the elevation of the cornea. Elevation is calculated as the distance from a point on the corneal surface to a point on a reference surface along a line parallel to the corneal topographer axis. For the purpose of visualization the reference surface is usually a sphere or an ellipse.

# concept[].definition
A two dimensional representation of a wavefront aberration surface of the cornea. Wavefront aberration surface is calculated from the corneal elevation data fit with either the Zernike polynomial series or the Fourier Series. Maps generally display total aberrations and selectable higher order aberrations.

# concept[].definition
A device that measures corneal anterior surface shape using elevation-based methods (stereographic and light slit-based). Rasterstereography images a grid pattern illuminating the fluorescein dyed tear film with 2 cameras to produce 3D. Slit-based devices scan the cornea, usually by rotation about the instrument axis centered on the cornea vertex.

# concept[].definition
A reflection-based device that projects a pattern of light onto the cornea and an image of the reflection of that pattern from the tear film is recorded in one video frame. Light patterns include the circular mire pattern (Placido disc) and spot matrix patterns. Sequential scanning of light spots reflected from the corneal surface is also used requiring multiple video frames for recording.

# concept[].definition
An Interference-based device that projects a beam of light onto and through the cornea. Light reflected from within the cornea is combined with a reference beam giving rise to an interference pattern. Appropriately scanned, this imaging is used to construct 3-dimensional images of the cornea from anterior to posterior surfaces.

# concept[].definition
A structured report containing the results of computer-aided detection or diagnosis applied to chest imaging and associated clinical information.

# concept[].definition
The shadow of an absorber that attenuates the X-Ray beam more effectively than do surrounding absorbers. In a radiograph, any circumscribed area that appears more nearly white (of lesser photometric density) than its surround [Fraser and Pare].

# concept[].definition
A unique identifier for a series of DICOM SOP instances.

# concept[].definition
A named anatomic region within the chest cavity.

# concept[].definition
A collection of opacities detected within the continuum of loose connective tissue throughout the lung, that is not expected in a diagnostically normal radiograph.

# concept[].definition
A type of anatomy that is expected to be detectable on a radiographic (X-Ray based) image.

# concept[].definition
Characteristic of the extent of spreading of a finding or feature.

# concept[].definition
Characteristic of the clarity of the boundary or edges of a finding or feature.

# concept[].definition
The part(s) of the anatomy affected or encompassed by a finding or feature.

# concept[].definition
Characteristic of the matter or substance within a finding or feature.

# concept[].definition
Characteristic of the surface or consistency of a finding or feature.

# concept[].definition
Position of the X-Ray beam about the patient from the RAO to LAO direction where movement from RAO to vertical is positive.

# concept[].definition
Position of the X-Ray beam about the patient from the caudal to cranial direction where movement from caudal to vertical is positive.

# concept[].definition
The zone, lobe or segment within the chest cavity in which a finding or feature is situated.

# concept[].definition
Vertical refers to orientation parallel to the superior-inferior (cephalad-caudad) axis of the body, with horizontal being perpendicular to this, and an oblique orientation having projections in both the horizontal and vertical.

# concept[].definition
Characteristic of the shape formed by the boundary or edges of a finding or feature.

# concept[].definition
Indicates whether a finding was considered a target lesion, non-target lesion, or non-lesion during evaluation of a baseline series, according to a method such as RECIST.

# concept[].definition
The extent of a detected cavity, represented as the percent of the surrounding volume that it occupies.

# concept[].display
Calcification extent as percent of surface

# concept[].definition
The extent of a detected calcification, represented as the percent of the surrounding surface that it occupies.

# concept[].display
Calcification extent as percent of volume

# concept[].definition
The extent of a detected calcification, represented as the percent of the surrounding volume that it occupies.

# concept[].definition
A heading for the reporting of response evaluation for treatment of solid tumors.

# concept[].definition
The system applied in the reporting of response evaluation for treatment of solid tumors.

# concept[].definition
Response Evaluation Criteria In Solid Tumors.

# concept[].definition
A term that further specifies the name of an item that is an inferred correlation relating two or more individual findings or features.

# concept[].definition
A term that further specifies the name of an item that was detected on one image.

# concept[].definition
A qualitative descriptor for the extent of a finding or feature.

# concept[].definition
A qualitative descriptor for the thickness of tubular structures, such as blood vessels.

# concept[].definition
A characteristic that further describes the nature of an opacity.

# concept[].display
Abnormal Distribution of Anatomic Structure

# concept[].definition
The type of adverse affect that a finding or feature is having on the surrounding anatomy.

# concept[].definition
Response evaluation method as defined in chapter 5, "Reporting of Response" of the WHO Handbook for Reporting Results for Cancer Treatment.

# concept[].definition
Identification of the morphology of detected calcifications.

# concept[].definition
A quantitative numerical statement of the relative attenuation of the X-Ray beam at a specified point. Coefficient that describes the fraction of a beam of X-Rays or gamma rays that is absorbed or scattered per unit thickness of the absorber. This value basically accounts for the number of atoms in a cubic cm volume of material and the probability of a photon being scattered or absorbed from the nucleus or an electron of one of these atoms. Usually expressed in Hounsfield units [referred to as CT Number in Fraser and Pare].

# concept[].definition
An X-Ray attenuation coefficient that is used as a threshold.

# concept[].definition
An opacity that is not expected in a diagnostically normal radiograph.

# concept[].definition
A textual description of the mathematical method of calculation that resulted in a calculated value.

# concept[].display
Performance of Pediatric and Adult Chest Radiography, ACR

# concept[].definition
American College of Radiology. ACR Standard for the Performance of Pediatric and Adult Chest Radiography. In: Standards. Reston, Va: 2001:95-98.

# concept[].definition
American College of Radiology. ACR Position Statement for Quality Control and Improvement, Safety, Infection Control, and Patient Concerns. In: Practice Guidelines and Technical Standards. Reston, Va: 2001:iv.

# concept[].definition
A descriptor for a non-lesion object finding or feature, used to indicate whether the object was detected as being internal or external to the patient's body.

# concept[].definition
A concept modifier for an Osseous Anatomy, or bone related, finding.

# concept[].definition
A text label used for tracking a finding or feature, potentially across multiple reporting objects, over time. This label shall be unique within the domain in which it is used. Corresponds to Tracking ID (0062,0020).

# concept[].definition
A unique identifier used for tracking a finding or feature, potentially across multiple reporting objects, over time. Corresponds to Tracking UID (0062,0021).

# concept[].definition
At least a 30% decrease in the sum of the Longest Diameter of target lesions, taking as reference the baseline sum Longest Diameter.

# concept[].definition
At least a 20% increase in the sum of the Longest Diameter of target lesions, taking as reference the smallest sum Longest Diameter recorded since the treatment started, or the appearance of one or more new lesions.

# concept[].definition
Neither sufficient shrinkage to qualify for Partial Response nor sufficient increase to qualify for Progressive Disease, taking as reference the smallest sum Longest Diameter since the treatment started.

# concept[].definition
Disappearance of all non-target lesions and normalization of tumor marker level.

# concept[].display
Non-Target Lesion Incomplete Response or Stable Disease

# concept[].definition
Persistence of one or more non-target lesions and/or maintenance of tumor marker level above the normal limits.

# concept[].definition
Appearance of one or more new lesions and/or unequivocal progression of existing non-target lesions.

# concept[].definition
The current response evaluation for treatment of solid tumors, according to a method such as RECIST.

# concept[].definition
Best response recorded from the start of the treatment until disease progression/recurrence, taking as reference for Progressive Disease the smallest measurements recorded since the treatment started, according to a method such as RECIST.

# concept[].definition
A text identifier of an anatomic feature when a multiplicity of features of that type may be present, such as "Rib 1", "Rib 2" or thoracic vertebrae "T1" or "T2".

# concept[].definition
A measured or calculated evaluation of response.

# concept[].definition
Of or relating to a bronchial (lung) specific channel for the conveyance of a body fluid.

# concept[].definition
The smallest unit of lung surrounded by connective tissue septa; the unit of lung subtended by any bronchiole that gives off three to five terminal bronchioles [Fraser and Pare].

# concept[].definition
A method of calculating an overall calcium score, reflecting the calcification of coronary arteries, based on the maximum X-Ray attenuation coefficient and the area of calcium deposits.

# concept[].definition
A method of calculating an overall calcium score, reflecting the calcification of coronary arteries, based on the volume of each calcification, typically expressed in mm3.

# concept[].definition
A method of calculating an overall calcium score, reflecting the calcification of coronary arteries, based on the total mass of calcification, typically expressed in mg.

# concept[].definition
A measure often arrived at through calculation of findings from CT examination, which is a common predictor of significant stenosis of the coronary arteries.

# concept[].definition
The combination of a focus of pneumonia due to a primary infection with granulomas in the draining hilar or mediastinal lymph nodes [Fraser and Pare].

# concept[].definition
General or local decrease in the apparent width of visible pulmonary vessels, suggesting less than normal blood flow (reduced blood flow) [Fraser and Pare].

# concept[].definition
Linear opacity of very fine width, i.e., a nearly one dimensional opacity.

# concept[].definition
Area of abnormal very low X-Ray attenuation, typically lower than aerated lung when occurring in or projecting over lung, or lower than soft tissue when occurring in or projecting over soft tissue.

# concept[].definition
A calcific opacity within the lung that may be organized, but does not display the trabecular organization of true bone [Fraser and Pare].

# concept[].definition
Relatively homogeneous, extended, pattern of abnormal opacity in the lung, typically low in contrast.

# concept[].definition
A collection of innumerable small, linear, and nodular opacities that together produce a composite appearance resembling a net with small superimposed nodules. The reticular and nodular elements are dimensionally of similar magnitude [Fraser and Pare].

# concept[].definition
Irregular septal thickening that suggests the appearance of a row of beads; usually a sign of lymphangitic carcinomatosis, but may also occur rarely in sarcoidosis [Fraser and Pare].

# concept[].definition
A collection of innumerable, small discrete opacities ranging in diameter from 2-10 mm, generally uniform in size and widespread in distribution, and without marginal spiculation [Fraser and Pare].

# concept[].definition
An irregular band of peripheral pulmonary opacity adjacent to visceral pleura that simulates the appearance of a pleural plaque and is formed by coalescence of small nodules [Fraser and Pare] .

# concept[].definition
A ring of opacities (usually representing a dilated, thick-walled bronchus) in association with a smaller, round, soft tissue opacity (the adjacent pulmonary artery) suggesting a "signet ring" [Fraser and Pare].

# concept[].definition
Equivalent of air bronchogram, but in airways assumed to be bronchioles because of peripheral location and diameter [Fraser and Pare].

# concept[].definition
Radiographic shadow of an air-containing bronchus; presumed to represent an air-containing segment of the bronchial tree (identity often inferred) [Fraser and Pare].

# concept[].definition
Air in a crescentic shape in a nodule or mass, in which the air separates the outer wall of the lesion from an inner sequestrum, which most commonly is a fungus ball of Aspergillusspecies [Fraser and Pare].

# concept[].definition
Ground-glass opacity surrounding the circumference of a nodule or mass. May be a sign of invasive aspergillosis or hemorrhage of various causes [Fraser and Pare].

# concept[].definition
Flag denoting that this lesion was identified, at baseline, as a target lesion intended for tracking over time [RECIST].

# concept[].definition
Flag denoting that this lesion was not identified, at baseline, as a target lesion, and was not intended for tracking over time [RECIST].

# concept[].definition
Flag denoting that this finding was identified, at baseline, as a category other than a lesion, and was not intended for tracking over time [RECIST].

# concept[].definition
Local or general reduction in the caliber of visible pulmonary vessels, presumed to result from decreased flow occasioned by contraction of muscular pulmonary arteries [Fraser and Pare].

# concept[].definition
Local or general increase in the width of visible pulmonary vessels resulting from increased pulmonary blood flow [Fraser and Pare].

# concept[].definition
A manifestation of lung disease in which bronchi, pulmonary vessels, a fissure or fissures, or septa of secondary pulmonary lobules are abnormally displaced [Fraser and Pare].

# concept[].definition
A patchwork of regions of varied attenuation, interpreted as secondary to regional differences in perfusion [Fraser and Pare].

# concept[].definition
Increased blood flow to the lungs or a portion thereof, manifested by a general or local increase in the width of visible pulmonary vessels [Fraser and Pare].

# concept[].definition
The common boundary between the shadows of two juxtaposed structures or tissues of different texture or opacity (edge, border) [Fraser and Pare].

# concept[].definition
A longitudinal opacity no greater than 2 mm in width [Fraser and Pare].

# concept[].definition
The shadow of an absorber that attenuates the primary X-Ray beam less effectively than do surrounding absorbers. In a radiograph, any circumscribed area that appears more nearly black (of greater photometric density) than its surround [Fraser and Pare].

# concept[].definition
A midlung region, characterized by the absence of large blood vessels and by a paucity of small blood vessels, that corresponds to the minor fissure and adjacent peripheral lung [Fraser and Pare].

# concept[].definition
The angle formed by the right and left main bronchi at the tracheal bifurcation [Fraser and Pare].

# concept[].definition
The pulmonary artery and its immediate branches in a secondary lobule; HRCT depicts these vessels in certain cases; a.k.a. core structures or lobular core structures [Fraser and Pare].

# concept[].definition
A vertically oriented linear or curvilinear opacity approximately 1-2 mm wide, commonly projected on the tracheal air shadow [Fraser and Pare].

# concept[].definition
A vertically oriented, linear or curvilinear opacity approximately 2 mm wide, commonly projected on the tracheal air shadow, and usually slightly concave to the right [Fraser and Pare].

# concept[].definition
A space in the right side of the mediastinum into which the medial edge of the right lower lobe extends [Fraser and Pare].

# concept[].definition
A vertically oriented interface usually seen in a frontal chest radiograph to the left of the thoracic vertebral column [Fraser and Pare].

# concept[].definition
A vertically oriented linear opacity ranging in width from 2-5 mm, extending from the thoracic inlet to the bifurcation of the trachea, and visible only on lateral radiographs of the chest [Fraser and Pare].

# concept[].definition
A vertically oriented linear opacity approximately 2-3 mm wide extending from the thoracic inlet to the right tracheobronchial angle [Fraser and Pare].

# concept[].definition
A longitudinal composite opacity measuring 2-5 mm in width; acceptable when limited to anatomic structures within the mediastinum [Fraser and Pare].

# concept[].definition
A gap or passage through an anatomical part or organ; especially: a gap through which another part or organ passes.

# concept[].definition
A small rounded elevation or eminence on the first rib for the attachment of the scalenus anterior.

# concept[].definition
A groove that serves for the transmission of the vertebral artery.

# concept[].definition
The concave depression of the anterior surface of the scapula.

# concept[].definition
A sloping ridge dividing the dorsal surface of the scapula into the supraspinatous fossa (above), and the infraspinatous fossa (below).

# concept[].definition
The portion of the dorsal surface of the scapula above the scapular spine.

# concept[].definition
The portion of the dorsal surface of the scapula below the scapular spine.

# concept[].definition
The portion of the aortic arch that defines the transition between its ascending and descending limbs.

# concept[].definition
Section of Azygos vein near the fourth thoracic vertebra, where it arches forward over the root of the right lung, and ends in the superior vena cava, just before that vessel pierces the pericardium.

# concept[].definition
A local collection of gas and liquid that, when traversed by a horizontal X-Ray beam, creates a shadow characterized by a sharp horizontal interface between gas density above and liquid density below [Fraser and Pare].

# concept[].definition
A circumferential pattern of fine linear spicules, approximately 5 mm long, extending outward from the margin of a solitary pulmonary nodule through a zone of relative lucency [Fraser and Pare].

# concept[].definition
A number of closely approximated ring shadows representing air spaces 5-10 mm in diameter with walls 2-3 mm thick that resemble a true honeycomb; implies "end-stage" lung [Fraser and Pare].

# concept[].definition
A straight, curved, or irregular linear opacity that is visible in multiple projections; usually situated in the lower half of the lung; vary markedly in length and width [Fraser and Pare].

# concept[].definition
Fine linear opacities present in a lobule when the intralobular interstitium is thickened. When numerous, they may appear as a fine reticular pattern [Fraser and Pare].

# concept[].definition
Essentially straight linear opacity 2-6 cm in length and 1-3 mm in width, usually in an upper lung zone [Fraser and Pare].

# concept[].definition
A straight linear opacity 1.5-2 cm in length and 1-2 mm in width, usually at the lung base [Fraser and Pare].

# concept[].definition
A group of branching, linear opacities producing the appearing of a fine net, at the lung base [Fraser and Pare].

# concept[].definition
Elongated opacity, usually several millimeters wide and up to about 5 cm long, often extending to the pleura, which may be thickened and retracted at the site of contact [Fraser and Pare].

# concept[].definition
A collection of innumerable small linear opacities that together produce an appearance resembling a net [Fraser and Pare].

# concept[].definition
Usually used in the plural, a generic term for linear opacities of varied distribution produced when the interstitium between pulmonary lobules is thickened [Fraser and Pare].

# concept[].definition
A thin curvilinear opacity, a few millimeters or less in thickness, usually less than 1 cm from the pleural surface and paralleling the pleura [Fraser and Pare].

# concept[].definition
Parallel or slightly convergent linear opacities that suggest the planar projection of tubular structures and that correspond in location and orientation to elements of the bronchial tree [Fraser and Pare].

# concept[].definition
Paired, parallel, or slightly convergent linear opacities presumed to represent the walls of a tubular structure seen en face; used if the anatomic nature of a shadow is obscure [Fraser and Pare].

# concept[].definition
The opacity of a radiographic shadow to visible light; film blackening; the term should never be used to mean an "opacity" or "radiopacity" [Fraser and Pare].

# concept[].definition
Subpleural increased attenuation in dependent lung. The increased attenuation disappears when the region of lung is nondependent; a.k.a. dependent increased attenuation [Fraser and Pare].

# concept[].definition
Hazy increased attenuation of lung, but with preservation of bronchial and vascular margins; caused by partial filling of air spaces, interstitial thickening, partial collapse of alveoli, normal expiration, or increased capillary blood volume [Fraser and Pare].

# concept[].definition
Any ill-defined opacity in the lung [Fraser and Pare].

# concept[].definition
Discrete, small, round, focal opacity of at least soft tissue attenuation and with a diameter no greater than 7 mm [Fraser and Pare].

# concept[].definition
A shadow produced by a local collection of fluid in one of the interlobar fissures, usually elliptic in one radiographic projection and rounded in the other, resembling a tumor [Fraser and Pare].

# concept[].definition
Any perceptible discontinuity in film blackening attributed to the attenuation of the X-Ray beam by a specific anatomic absorber or lesion on or within the body of the patient; to be employed only when more specific identification is not possible [Fraser and Pare].

# concept[].definition
Term used to define a reticular pattern specific to pneumoconioses [Fraser and Pare].

# concept[].definition
Term used to define a nodular pattern specific to pneumoconioses [Fraser and Pare].

# concept[].definition
Nodular dilation of centrilobular branching structures that resembles a budding tree and represents exudative bronchiolar dilation [Fraser and Pare].

# concept[].definition
Any extended, finely granular pattern of pulmonary opacity within which normal anatomic details are partly obscured [Fraser and Pare].

# concept[].definition
A collection of tiny discrete opacities in the lungs, each measuring 2 mm or less in diameter, generally uniform in size and widespread in distribution [Fraser and Pare].

# concept[].definition
Generalized pattern of relatively well defined areas in the lung having different X-Ray attenuations due to a longstanding underlyingpulmonary disease.

# concept[].definition
A qualitative descriptor of a size that is dramatically less than typical.

# concept[].definition
A qualitative descriptor of a size that is considerably less than typical.

# concept[].definition
A qualitative descriptor of a size that is so small as to be abnormal versus expected size.

# concept[].definition
A border shape that is made up of, provided with, or divided into lobules (small lobes, curved or rounded projections or divisions).

# concept[].definition
The border of a shadow (opacity) is sharply defined [Fraser and Pare].

# concept[].definition
The border of a shadow (opacity) is distinctly defined [Fraser and Pare].

# concept[].definition
The border of a shadow (opacity) is well distinct from adjacent structures [Fraser and Pare].

# concept[].definition
The border of a shadow (opacity) is sharply distinct from adjacent structures [Fraser and Pare].

# concept[].definition
The border of a shadow (opacity) is poorly distinct from adjacent structures [Fraser and Pare].

# concept[].definition
A shadow (opacity) possessing a complete or nearly complete visible border [Fraser and Pare].

# concept[].definition
Inspired atmospheric gas. The word is sometimes used to describe gas within the body regardless of its composition or site [Fraser and Pare].

# concept[].definition
Material having X-Ray attenuation properties similar to muscle.

# concept[].definition
Material having X-Ray attenuation properties similar to calcium, a silver-white bivalent metallic element occurring in plants and animals.

# concept[].definition
A pulmonary opacity 4-8 mm in diameter, presumed to represent anatomic acinus, or a collection of opacities in the lung, each measuring 4-8 mm in diameter, and together producing an extended, homogeneous shadow [Fraser and Pare].

# concept[].definition
The gas-containing portion of the lung parenchyma, including the acini and excluding the interstitium [Fraser and Pare].

# concept[].definition
Sharply defined, approximately circular opacities occurring singly or in clusters, usually in the upper lobes [Fraser and Pare].

# concept[].definition
A shadow (opacity) that is ill-defined, lacking clear-cut margins [Fraser and Pare].

# concept[].definition
A shadow resembling a line; any elongated opacity of approximately uniform width [Fraser and Pare].

# concept[].definition
The number of small opacities per unit area or zone of lung. In the International Labor Organization (ILO) classification of radiographs of the pneumoconioses, the qualifiers 0 through 3 subdivide the profusion into 4 categories. The profusion categories may be further subdivided by employing a 12-point scale [Fraser and Pare].

# concept[].definition
The effacement of an anatomic soft tissue border by either a normal anatomic structure or a pathologic state such as airlessness of adjacent lung or accumulation of fluid in the contiguous pleural space; useful in detecting and localizing an opacity along the axis of the X-Ray beam [Fraser and Pare].

# concept[].definition
Situated or occurring between the pleura and the body wall.

# concept[].definition
Spatial arrangement of opacities that bears vague resemblance to the shape of a bat in flight; bilaterally symmetric [Fraser and Pare].

# concept[].definition
Spatial arrangement of opacities that bears vague resemblance to the shape of a butterfly in flight; bilaterally symmetric [Fraser and Pare].

# concept[].definition
Referring to the region of the bronchioloarteriolar core of a secondary pulmonary lobule [Fraser and Pare].

# concept[].definition
The joining together of a number of opacities into a single opacity [Fraser and Pare].

# concept[].definition
Of or relating to a lobe (a curved or rounded projection or division).

# concept[].definition
Extremely or excessively acute, as a qualitative measure of severity.

# concept[].definition
Of uniform opacity or texture throughout [Fraser and Pare].

# concept[].definition
Lack of homogeneity in opacity or texture.

# concept[].definition
Discrete opacity centrally within a larger opacity, as a calcification descriptor.

# concept[].definition
Pertaining to sharply defined, linear, and/or nodular opacities containing calcification(s) [Fraser and Pare].

# concept[].definition
Calcifications made up of loosely aggregated particles, resembling wool.

# concept[].definition
A change in the shape formed by the boundary or edges of a finding or feature.

# concept[].definition
A change in the clarity of the boundary or edges of a finding or feature.

# concept[].definition
A change in the extent of spreading of a finding or feature.

# concept[].definition
A change in the part(s) of the anatomy affected or encompassed by a finding or feature.

# concept[].definition
A change in the matter or substance within a finding or feature.

# concept[].definition
A change in the surface or consistency of a finding or feature.

# concept[].definition
A location in image space, which may or may not correspond to an anatomical reference, which is often used for registering data.

# concept[].definition
Connected to an injection chamber placed under the skin in the upper part of the chest. When it is necessary to inject some drug, a specific needle is put in the chamber through the skin and a silicon membrane. The advantage of a portacath is that it may be left in place several months contrarily of "classical" catheters.

# concept[].definition
A tube inserted into the chest wall from outside the body, for drainage. Sometimes used for collapsed lung. Usually connected to a receptor placed lower than the insertion site.

# concept[].definition
A tube placed into the subclavian vein to deliver medication directly into the venous system.

# concept[].definition
A stent is a tube inserted into another tube. Kidney stent is a tube that is inserted into the kidney, ureter, and bladder, to help drain urine. Usually inserted through a scoping device presented through the urethra.

# concept[].definition
A stent is a tube inserted into another tube. Pancreatic stent is inserted through the common bile duct to the pancreatic duct, to drain bile.

# concept[].definition
A non-lesion object that appears to be a circular band, attached to the body via pierced nipple.

# concept[].definition
A non-lesion object that appears to be a flat round piece of metal.

# concept[].definition
The least quantity assignable, admissible, or possible; the least of a set of X-Ray attenuation coefficients.

# concept[].definition
The greatest quantity or value attainable or attained; the largest of a set of X-Ray attenuation coefficients.

# concept[].definition
The value that is computed by dividing the sum of a set of X-Ray attenuation coefficients by the number of values .

# concept[].definition
The value in an ordered set of X-Ray attenuation coefficients, below and above which there is an equal number of values.

# concept[].display
Standard Deviation of Attenuation Coefficient

# concept[].definition
For a set of X-Ray attenuation coefficients: 1) a measure of the dispersion of a frequency distribution that is the square root of the arithmetic mean of the squares of the deviation of each of the class frequencies from the arithmetic mean of the frequency distribution; 2) a parameter that indicates the way in which a probability function or a probability density function is centered around its mean and that is equal to the square root of the moment in which the deviation from the mean is squared.

# concept[].display
Performance of Pediatric and Adult Thoracic CT

# concept[].definition
American College of Radiology. ACR Standard for the Performance of Pediatric and Adult Thoracic Computed Tomography (CT). In: Standards. Reston, Va: 2001:103-107.

# concept[].display
Performance of CT for Detection of Pulmonary Embolism in Adults

# concept[].definition
American College of Radiology. ACR Standard for the Performance of Computed Tomography for the Detection of Pulmonary Embolism in Adults. In: Standards. Reston, Va: 2001:109-113.

# concept[].display
Performance of High-Resolution CT of the Lungs in Adults

# concept[].definition
American College of Radiology. ACR Standard for the Performance of High-Resolution Computed Tomography (HRCT) of the Lungs in Adults. In: Standards. Reston, Va: 2001:115-118.

# concept[].definition
The method of calculation of a measurement or other type of numeric value is not specified.

# concept[].definition
The calculation method was performed in two-dimensional space.

# concept[].definition
The calculation method was performed in three-dimensional space.

# concept[].definition
The relative density of parenchymal tissue as a proportion of breast volume.

# concept[].definition
A measured or calculated area of vascular calcification.

# concept[].definition
A measured or calculated volume of vascular calcification.

# concept[].definition
A measured or calculated percentage of vascular calcification.

# concept[].definition
A measured or calculated mass of vascular calcification.

# concept[].display
Average calcification distance in a calcification cluster

# concept[].definition
The average nearest neighbor distance of all individual microcalcifications in a cluster.

# concept[].display
Standard deviation distance of calcifications in a cluster

# concept[].definition
The standard deviation of nearest neighbor distance of all individual microcalcifications in a cluster.

# concept[].definition
A structured report containing the results of computer-aided detection or diagnosis applied to colon imaging and associated clinical information.

# concept[].definition
Overall interpretation of the colon using C-RADS categorization system.

# concept[].definition
Distance between contiguous images, measured from the center-to-center of each image.

# concept[].definition
Uniquely identifies groups of composite instances that have the same coordinate system that conveys spatial and/or temporal information.

# concept[].display
Recumbent Patient Position with respect to gravity

# concept[].definition
Patient orientation with respect to downward direction (gravity).

# concept[].definition
The diameter of a polyp stalk measured perpendicular to the axis of the stalk.

# concept[].definition
The length of the path following the centerline of the colon from the anus to the area of interest.

# concept[].definition
A location in the body that is outside the colon.

# concept[].display
C0 - Inadequate Study/Awaiting Prior Comparisons

# concept[].definition
An inadequate study or a study that is awaiting prior comparisons. The study may have inadequate preparation and cannot exclude lesions greater than or equal to ten millimeters owing to presence of fluid or feces. The study may have inadequate insufflation where one or more colonic segments collapsed on both views. Based on "CT Colonography Reporting and Data System: A Consensus Proposal", Radiology, July 2005; 236:3-9.

# concept[].definition
The study has a normal colon or benign lesion, with the recommendation to continue routine screening. The study has no visible abnormalities of the colon. The study has no polyps greater than six millimeters. The study may have lipoma, inverted diverticulum, or nonneoplastic findings, such as colonic diverticula. Based on "CT Colonography Reporting and Data System: A Consensus Proposal", Radiology, July 2005; 236:3-9.

# concept[].display
C2 - Intermediate Polyp or Indeterminate Finding

# concept[].definition
The study has an intermediate polyp or indeterminate finding and surveillance or colonoscopy is recommended. There may be intermediate polyps between six and nine millimeters and there are less than three in number. The study may have an intermediate finding and cannot exclude a polyp that is greater than or equal to six millimeters in a technically adequate study. Based on "CT Colonography Reporting and Data System: A Consensus Proposal", Radiology, July 2005; 236:3-9.

# concept[].definition
The study has a polyp, possibly advanced adenoma, and a follow-up colonoscopy is recommended. The study has a polyp greater than or equal to ten millimeters or the study has three or more polyps that are each between six to nine millimeters. Based on "CT Colonography Reporting and Data System: A Consensus Proposal", Radiology, July 2005; 236:3-9.

# concept[].definition
The study has a colonic mass, likely malignant, and surgical consultation is recommended. The lesion compromises bowel lumen and demonstrates extracolonic invasion. Based on "CT Colonography Reporting and Data System: A Consensus Proposal", Radiology, July 2005; 236:3-9.

# concept[].display
ACR Guideline, Performance of Adult CT Colonography

# concept[].definition
American College of Radiology Practice Guideline for the Performance of Computed Tomography (CT) Colonography in Adults. In: Practice Guidelines and Technical Standards.Reston, Va: American College of Radiology;2006:371-376.

# concept[].display
ACR Standard, CT medical physics performance monitoring

# concept[].definition
American College of Radiology Technical Standard for Diagnostic Medical Physics Performance Monitoring of Computed Tomography (CT) Equipment. In: Practice Guidelines and Technical Standards.Reston, Va: American College of Radiology;2006:945-948.

# concept[].definition
View Orientation Modifier indicates that the view orientation of the imaging plane is rotated +45° along the cranial-caudal axis.

# concept[].definition
View Orientation Modifier indicates that the view orientation of the imaging plane is rotated -45° along the cranial-caudal axis.

# concept[].definition
The axis following the shaft of the femur.

# concept[].definition
Center of Rotation of the natural Acetabulum.

# concept[].definition
Center of Rotation of the natural femur head.

# concept[].definition
Prosthetic component implanted into the acetabulum. Provides hold for the insert that is mounted inside the cup.

# concept[].definition
Prosthetic pelvic joint component. Inserted into the cup, takes in the femoral head replacement.

# concept[].definition
Prosthetic pelvic joint cup including insert.

# concept[].definition
Component for Femoral Head Prosthesis where the conic intake for the stem neck can be exchanged.Combined with a Femoral Head Cone Taper Component.

# concept[].definition
Exchangeable neck intake for composite femoral head prosthesis.Combined with a Femoral Head Ball Component.

# concept[].definition
Prosthesis Implanted into the femoral bone to provide force transmission between joint replacement and bone. On the proximal end a conic neck holds the femoral head replacement.

# concept[].definition
Distal half of a modular stem prosthesis system.Combined with a Stem Proximal Component.

# concept[].definition
Proximal half of a modular stem prosthesis system.Combined with a Stem Distal Component.

# concept[].definition
Stem prosthetic component with a modular insert for an exchangeable neck component.Combined with a Neck Component.

# concept[].definition
Prosthetic Neck to be combined with a Stem Component.

# concept[].definition
Prosthetic Stem and Femoral Head in one piece.

# concept[].definition
A proximal attachment to the shaft used to compensate for bone deficiencies or bone loss.

# concept[].definition
Artificial femur head surface needed for the partial replacement of the femoral head where only the surface is replaced.

# concept[].definition
Fixation sewing several objects together.

# concept[].definition
Fixation due to forcing an object into a narrow space.

# concept[].definition
Attachment to the distal end of a cemented stem assuring that the stem is in a central position inside the drilled femoral canal before cementation.

# concept[].definition
Planning of a Hip Replacement, by an unspecified method.

# concept[].definition
Planning of Knee Replacement, by an unspecified method.

# concept[].display
Müller Method Planning for Hip Replacement

# concept[].definition
Planning of Hip Replacement according to the procedure of M. E. Müller [Eggli et. al.1998].

# concept[].definition
A Report containing the results of an Implantation Planning Activity.

# concept[].definition
Identification ID of an Implant Component.

# concept[].definition
An implant template describing the properties (2D/3D geometry and other data) of one Implant Component.

# concept[].definition
A connection of two Connected Implantation Plan Components.

# concept[].definition
ID of a Mating Feature Set in an Implant Component.

# concept[].definition
ID of the Mating Feature in a Mating Feature Set in an Implant Component.

# concept[].definition
The Spatial Registration of one or more Implant Components.

# concept[].definition
Patient Images used for an implantation planning activity.

# concept[].definition
A collection of Component Connections of Implant Components.

# concept[].definition
Fiducials that are selected by the user and may or may not belong to anatomical landmarks.

# concept[].definition
Fiducials that represent geometric characteristics, such as center of rotation, and are derived from other fiducials.

# concept[].definition
All parameters and data that were used for the planning activity.

# concept[].definition
A description of the plan as encapsulated PDF SOP Instance.

# concept[].definition
A list of all Implant Components selected for an implantation.

# concept[].definition
Reference to objects containing patient data that is used for planning.

# concept[].definition
A specification of the values from one or more Degrees of Freedom.

# concept[].display
Related Patient Data Not Used During Planning

# concept[].definition
Reference to objects containing patient data that were not used for planning but are somehow related.

# concept[].definition
Implantation Reports that are somehow related.

# concept[].display
Planning Information for Intraoperative Usage

# concept[].definition
Information that is intended to be used intra-operatively.

# concept[].definition
Position of the patient on the operating room table.

# concept[].definition
Implant Template released by the Manufacturer.

# concept[].definition
Images that are created by a planning application.

# concept[].definition
Data that is created by a planning application.

# concept[].definition
One Implant Component that is connected to another Implant Component.

# concept[].display
Degree of Freedom Exact Translational Value

# concept[].definition
Defines the exact value that was planned for translation.

# concept[].display
Degree of Freedom Minimum Translational Value

# concept[].definition
Defines the minimum value that was planned for translation.

# concept[].display
Degree of Freedom Maximum Translational Value

# concept[].definition
Defines the maximum value that was planned for translation.

# concept[].display
Degree of Freedom Exact Rotational Translation Value

# concept[].definition
Defines the exact value that was planned for rotation.

# concept[].display
Degree of Freedom Minimum Rotational Value

# concept[].definition
Defines the minimum value that was planned for rotation.

# concept[].display
Degree of Freedom Maximum Rotational Value

# concept[].definition
Defines the maximum value that was planned for rotation.

# concept[].definition
Procedure step protocol for photographic imaging of surgical procedures, including photography of specimens collected.

# concept[].definition
Procedure step protocol for imaging gross specimens, typically with a photographic camera (modality XC), and planning further dissection.

# concept[].definition
Procedure step protocol for imaging slide specimens.

# concept[].definition
Procedure step protocol for imaging slide specimens using a whole slide scanner.

# concept[].definition
Procedure step protocol for imaging slide specimens using a whole slide scanner with a 20X nominal objective lens, in full color, with a single imaging focal plane across the image.

# concept[].definition
Procedure step protocol for imaging slide specimens using a whole slide scanner with a 40X nominal objective lens, in full color, with a single imaging focal plane across the image.

# concept[].definition
Number of focal planes for a microscopy image acquisition.

# concept[].definition
Nominal distance above a reference plane (typically a slide glass substrate top surface) of the focal plane.

# concept[].definition
Microscope magnification based on nominal objective lens power.

# concept[].definition
Nominal center wavelength for an imaging spectral band.

# concept[].definition
Name (coded) for an imaging spectral band.

# concept[].definition
Type of filter inserted into the optical imaging path.

# concept[].definition
Technique for identifying tissue to be imaged versus area of slide not to be imaged.

# concept[].definition
Imaging performed at multiple imaging (focal) planes.

# concept[].definition
Nominal 5 power objective lens, resulting in a digital image at approximately 2 um/pixel spacing.

# concept[].definition
Nominal 10 power objective lens, resulting in a digital image at approximately 1 um/pixel spacing.

# concept[].definition
Nominal 20 power microscope objective lens, resulting in a digital image at approximately 0.5 um/pixel spacing.

# concept[].definition
Nominal 40 power microscope objective lens, with a combined condenser and objective lens numerical aperture of approximately 1.3, resulting in a digital image at approximately 0.25 um/pixel spacing.

# concept[].definition
Equipment-specific nominal or default method for identifying tiles without tissue imaged for suppression from inclusion in image object.

# concept[].definition
Equipment-specific high threshold method for identifying tiles without tissue imaged for suppression from inclusion in image object.

# concept[].definition
Tiles without tissue imaged are not suppressed from inclusion in image object.

# concept[].definition
A selection that represents the "best" chosen from a larger set of items.

# concept[].definition
A study is a collection of one or more series of medical images, presentation states, and/or SR documents that are logically related for the purpose of diagnosing a patient. A study may include composite instances that are created by a single modality, multiple modalities or by multiple devices of the same modality. [From ]

# concept[].definition
A distinct logical set used to group composite instances. All instances within a Series are of the same modality, in the same Frame of Reference (if any), and created by the same equipment. [See ]

# concept[].definition
An arbitrarily defined unit of service that has actually been performed (not just scheduled). [From ]

# concept[].definition
An image or set of images illustrating a specific stage (phase in a stress echo study protocol) and view (combination of the transducer position and orientation at the time of image acquisition).

# concept[].definition
Selection of information objects for attachment to the clinical report of the Current Requested Procedure.

# concept[].definition
List of objects that are related to litigation and should be specially handled.

# concept[].definition
This Key Object Selection Document references Presentation State instances that are related, which may or may not share a value of Presentation Display Collection UID (0070,1101) or Presentation Sequence Collection UID (0070,1102).

# concept[].definition
A list of objects that have been exported out of one organizational domain into another domain. Typically, the first domain has no direct control over what the second domain will do with the objects.

# concept[].definition
A signed list of objects that have been exported out of one organizational domain into another domain, referenced securely with either Digital Signatures or MACs. Typically, the first domain has no direct control over what the second domain will do with the objects.

# concept[].definition
The list of objects that constitute a study at the time that the list was created.

# concept[].definition
The signed list of objects that constitute a study at the time that the list was created, referenced securely with either Digital Signatures or MACs.

# concept[].definition
The list of objects that were generated in a single procedure step.

# concept[].definition
The signed list of objects that were generated in a single procedure step, referenced securely with either Digital Signatures or MACs.

# concept[].definition
A list of frames or single-frame or entire multi-frame instances that together constitute a set for some purpose, such as might be displayed together in the same viewport, as distinct from another set that might be displayed in a separate viewport.

# concept[].definition
List of objects whose use is potentially harmful to the patient.

# concept[].definition
List of objects that were acquired using an incorrect modality worklist entry, and that should not be used, since they may be incorrectly identified.

# concept[].definition
List of objects that have expired according to a defined data retention policy.

# concept[].definition
Lossy compression has been applied to an image.

# concept[].definition
Values are derived by calculation of the apparent diffusion coefficient. This concept may be used for the diffusion coefficient of various different models, e.g., mono-exponential (ADCm), kurtosis (ADCk), stretched-exponential (ADCs).The "apparent" appellation is because the diffusion images from which the ADC is computed may also be affected by T2 contrast (T2 "shine-through"), so this concept is distinguished from a "pure" diffusion coefficient that is not so affected.

# concept[].definition
Values are derived by the pixel by pixel addition of two images.

# concept[].definition
Values are derived by calculation of the diffusion weighting.

# concept[].definition
Values are derived by calculation of the diffusion anisotropy.

# concept[].definition
Values are derived by calculation of the diffusion attenuation.

# concept[].definition
Values are derived by the pixel by pixel division of two images.

# concept[].definition
Values are derived by the pixel by pixel masking of one image by another.

# concept[].definition
Values are derived by calculating the pixel by pixel maximum of two or more images.

# concept[].definition
Values are derived by calculating the pixel by pixel mean of two or more images.

# concept[].definition
Values are derived by calculating from spectroscopy data pixel values localized in two dimensional space based on the concentration of specific metabolites (i.e, at specific frequencies).

# concept[].definition
Values are derived by calculating the pixel by pixel minimum of two or more images.

# concept[].definition
The time required for blood to pass through a region of tissue.

# concept[].definition
Values are derived by the pixel by pixel multiplication of two images.

# concept[].definition
The area described by the baseline and the signal loss due to passage of contrast bolus in tissue in a perfusion experiment. Abbreviated NEI or N1.

# concept[].definition
The absolute flow rate of blood perfusing a region of the brain as volume per mass per unit of time. The mass divisor may be approximated by a measurement of volume assuming a tissue density of 1.

# concept[].definition
The absolute volume of blood perfusing a region of brain as volume per mass. The mass divisor may be approximated by a measurement of volume assuming a tissue density of 1.

# concept[].definition
Values are derived by calculating proton density values.

# concept[].definition
The ratio of the desired signal to the level of noise.

# concept[].definition
Values are derived by calculating the standard deviation of two or more images.

# concept[].definition
Values are derived by the pixel by pixel subtraction of two images.

# concept[].definition
The time constant for the decay of longitiudinal magnetization caused by spin-lattice relaxation. The inverse of the longitudinal relaxation rate constant, i.e., T1 = 1/R1.

# concept[].definition
The time constant for the decay of transverse magnetization caused by a combination of spin-spin relaxation and magnetic field inhomogeneity. The inverse of the transverse relaxation rate constant, i.e., T2* = 1/R2*.

# concept[].definition
The time constant for the decay of transverse magnetization caused by spin-spin relaxation. The inverse of the transverse relaxation rate constant, i.e., T2 = 1/R2.

# concept[].definition
Values are derived by calculating values based on temperature encoding.

# concept[].definition
Values are derived by calculating the value of the Student's T-Test statistic from multiple image samples.

# concept[].definition
The time from the start of the contrast agent injection to the maximum enhancement value.

# concept[].definition
Values are derived by calculating values based on velocity encoded.

# concept[].definition
Values are derived by calculating the value of the Z-Score statistic from multiple image samples.

# concept[].definition
Values are derived by reformatting in a flat plane other than that originally acquired.

# concept[].definition
Values are derived by reformatting in a curve plane other than that originally acquired.

# concept[].definition
Values are derived by volume rendering of acquired data.

# concept[].definition
Values are derived by surface rendering of acquired data.

# concept[].definition
Values are derived by segmentation (classification into tissue types) of acquired data.

# concept[].definition
Values are derived by selectively editing acquired data (removing values from the volume), such as in order to remove obscuring structures or noise.

# concept[].definition
Values are derived by maximum intensity projection of acquired data.

# concept[].definition
Values are derived by minimum intensity projection of acquired data.

# concept[].definition
For single-proton MR spectroscopy, the resonance peak corresponding to glutamate and glutamine.

# concept[].definition
For single-proton MR spectroscopy, the ratio between the Choline and Creatine resonance peaks.

# concept[].definition
For single-proton MR spectroscopy, the ratio between the N-acetylaspartate and Creatine resonance peaks.

# concept[].definition
For single-proton MR spectroscopy, the ratio between the N-acetylaspartate and Choline resonance peaks.

# concept[].definition
The time delay to the maximum of the residue function after deconvolution.Shih LC, Saver JL, Alger JR, Starkman S, Leary MC, Vinuela F, et al. Perfusion-Weighted Magnetic Resonance Imaging Thresholds Identifying Core, Irreversibly Infarcted Tissue. Stroke. 2003 Jun 1;34(6):1425-30. doi:10.1161/01.STR.0000072998.70087.E9. Østergaard L, Weisskoff RM, Chesler DA, Gyldensted C, Rosen BR. High resolution measurement of cerebral blood flow using intravascular tracer bolus passages. Part I: Mathematical approach and statistical analysis. Magnetic Resonance in Medicine. 1996;36(5):715-25. doi:10.1002/mrm.1910360510.

# concept[].definition
Values are derived by spatial resampling of acquired data.

# concept[].definition
Values are derived by Gaussian blurring.

# concept[].definition
Values are derived by stitching two or more images together.

# concept[].display
Spatially-related frames extracted from the volume

# concept[].definition
Spatially-related frames in this image are representative frames from the referenced 3D volume data.

# concept[].display
Temporally-related frames extracted from the set of volumes

# concept[].definition
Temporally-related frames in this image are representative frames from the referenced 3D volume data.

# concept[].definition
Conversion of a polar coordinate image to rectangular (Cartesian) coordinate image.

# concept[].definition
For single-proton MR spectroscopy, the resonance peak corresponding to creatine and choline.

# concept[].definition
For single-proton MR spectroscopy, the resonance peak corresponding to lipid and lactate.

# concept[].definition
For single-proton MR spectroscopy, the ratio between the Choline and Creatine resonance peak and the Citrate resonance peak.

# concept[].definition
Image pixels created through proportional weighting of multiple acquisitions at distinct X-Ray energies.

# concept[].definition
Magnetization Transfer Ratio (MTR) is the ratio of magnetization transfer, Mo - Ms/Mo, where Ms represents the magnitude of signal of tissues with the saturation pulse used to saturate macromolecular protons on, and Mo is the magnitude of signal without saturation.See Dousset V, Grossman RI, Ramer KN, Schnall MD, Young LH, Gonzalez-Scarano F, et al. Experimental allergic encephalomyelitis and multiple sclerosis: lesion characterization with magnetization transfer imaging. Radiology. 1992 Feb 1;182(2):483-91. http://dx.doi.org/10.1148/radiology.182.2.1732968

# concept[].definition
De-identification using a profile defined in that requires removing all information related to the identity and demographic characteristics of the patient, any responsible parties or family members, any personnel involved in the procedure, the organizations involved in ordering or performing the procedure, additional information that could be used to match instances if given access to the originals, such as UIDs, dates and times, and Private Attributes, when that information is present in the non-Pixel Data Attributes, including graphics or overlays.

# concept[].definition
Additional de-identification according to an option defined in that requires any information burned in to the Pixel Data corresponding to the Attribute information specified to be removed by the Profile and any other Options specified also be removed.

# concept[].display
Clean Recognizable Visual Features Option

# concept[].definition
Additional de-identification according to an option defined in that requires that sufficient removal or distortion of the Pixel Data shall be applied to prevent recognition of an individual from the instances themselves or a reconstruction of a set of instances.

# concept[].definition
Additional de-identification according to an option defined in that requires that any information encoded in graphics, text annotations or overlays corresponding to the Attribute information specified to be removed by the Profile and any other Options specified also be removed.

# concept[].definition
Additional de-identification according to an option defined in that requires that any information encoded in SR Content Items or Acquisition Context Sequence Items corresponding to the Attribute information specified to be removed by the Profile and any other Options specified also be removed.

# concept[].definition
Additional de-identification according to an option defined in that requires that any information that is embedded in text or string Attributes corresponding to the Attribute information specified to be removed by the Profile and any other Options specified also be removed.

# concept[].display
Retain Longitudinal Temporal Information Full Dates Option

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that any dates and times be retained,.

# concept[].display
Retain Longitudinal Temporal Information Modified Dates Option

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that any dates and times be modified in a manner that preserves temporal relationships.

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that any physical characteristics of the patient, which are descriptive rather than identifying information per se, be retained.

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that any information that identifies a device be retained.

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that UIDs be retained.

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that Private Attributes that are known not to contain identity information be retained.

# concept[].definition
Retention of information that would otherwise be removed during de-identification according to an option defined in that requires that any information that identifies an institution be retained.

# concept[].display
Predecessor containing group of imaging subjects

# concept[].definition
Images used as the source for an image processing operation that extracts data for a single subject from an image containing data for multiple subjects (e.g., a group of animals imaged simultaneously).

# concept[].display
Extraction of individual subject from group

# concept[].definition
An image processing operation that extracts data for a single subject from an image containing data for multiple subjects (e.g., a group of animals imaged simultaneously).

# concept[].definition
A single subject that has been selected from amongst multiple subjects (e.g., a group of animals imaged simultaneously), and whose data has been extracted.

# concept[].definition
Sum of the diffusion tensor eigenvalues.I.e.: Tr = λ1+ λ2+ λ3, where λ1 ≥ λ2 ≥ λ3.Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()

# concept[].definition
Average of the diffusion tensor eigenvalues in all directions.I.e.: MD = (λ1+ λ2+ λ3) /3Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()

# concept[].definition
Average of the two non-principal (i.e., perpendicular) diffusion tensor eigenvalues(also known as transverse diffusivity, perpendicular diffusivity).I.e.: DR= (λ2+ λ3) /2Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()

# concept[].definition
Diffusion tensor eigenvalue of the principal axis (also known as longitudinal diffusivity, parallel diffusivity).I.e.: DA = λ1Reference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()

# concept[].definition
MK = diffusional kurtosis averaged over all gradient directionsReference: Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of Tensors and Tensor-Derived Measures in Diffusional Kurtosis Imaging. Magnetic Resonance in Medicine. 2011;65(3) :823-836. doi:10.1002/mrm.22655. ()Reference: Liu C, Mang SC, Moseley ME. In VivoGeneralized Diffusion Tensor Imaging (GDTI) Using Higher-Order Tensors (HOT). Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. 2010;63(1) :243-252. doi:10.1002/mrm.22192. ()

# concept[].definition
AKC = diffusional kurtosis in a given directionReference: Liu C, Mang SC, Moseley ME. In VivoGeneralized Diffusion Tensor Imaging (GDTI) Using Higher-Order Tensors (HOT). Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. 2010;63(1) :243-252. doi:10.1002/mrm.22192. ()

# concept[].definition
KR = diffusional kurtosis perpendicular to the direction of the highest diffusion (also known as transverse kurtosis, perpendicular kurtosis)Reference: Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of Tensors and Tensor-Derived Measures in Diffusional Kurtosis Imaging. Magnetic Resonance in Medicine. 2011;65(3) :823-836. doi:10.1002/mrm.22655. ()

# concept[].definition
KA = diffusional kurtosis in the direction of the highest diffusion (also known as longitudinal kurtosis, parallel kurtosis)Reference: Tabesh A, Jensen JH, Ardekani BA, Helpern JA. Estimation of Tensors and Tensor-Derived Measures in Diffusional Kurtosis Imaging. Magnetic Resonance in Medicine. 2011;65(3) :823-836. doi:10.1002/mrm.22655. ()

# concept[].definition
FKA = fractional kurtosis of diffusion in tissuesReference: Liu C, Mang SC, Moseley ME. In VivoGeneralized Diffusion Tensor Imaging (GDTI) Using Higher-Order Tensors (HOT). Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine. 2010;63(1) :243-252. doi:10.1002/mrm.22192. ()

# concept[].definition
Tracking based on local directionalityReference: Descoteaux M, Deriche R, Knösche TR, Anwander A. Deterministic and probabilistic tractography based on complex fibre orientation distributions. IEEE Trans Med Imaging.2009; 28(2) :269-86 ()

# concept[].definition
Tracking using local fiber orientation likelihood derive global connectivity likelihoodReference: Descoteaux M, Deriche R, Knösche TR, Anwander A. Deterministic and probabilistic tractography based on complex fibre orientation distributions. IEEE Trans Med Imaging.2009; 28(2) :269-86 ()

# concept[].definition
Tracking allfibers simultaneously, searching for a global optimum.Reference: Reisert M, Mader I, Anastasopoulos C, Weigel M, Schnell S, Kiselev V. Global fiber reconstruction becomes practical. NeuroImage. 2011 Jan 15;54(2) :955-62. ()

# concept[].definition
Fiber Assessment by Continuous TrackingReference: Mori S, Crain BJ, Chacko VP, van Zijl PC. Three-dimensional tracking of axonal projections in the brain by magnetic resonance imaging. Ann Neurol . 1999 Feb;45(2) :265-9 ()Reference: Descoteaux M, Deriche R, Knösche TR, Anwander A. Deterministic and probabilistic tractography based on complex fibre orientation distributions. IEEE Trans Med Imaging.2009; 28(2) :269-86 ()

# concept[].definition
Streamline tracking techniques (STT)Reference: Basser PJ, Pajevic S, Pierpaoli C, Duda J, Aldroubi A. In vivo fiber tractography using DT-MRI data. Magn Reson Med. 2000 Oct;44(4) :625-32 ()

# concept[].definition
Tensor DeflectionReference: Lazar M, Weinstein DM, Tsuruda JS, Hasan KM, Arfanakis K, Meyerand ME, Badie B, Rowley HA, Haughton V, Field A, Alexander AL. White matter tractography using diffusion tensor deflection. Hum Brain Mapp.2003 Apr;18(4) :306-21. ()

# concept[].definition
Non-parametric estimation of fiber tracking dispersionReference: Lazar M, Alexander AL. Bootstrap white matter tractography (BOOT-TRAC). Neuroimage. 2005 Jan 15;24(2) :524-32. Epub 2004 Nov 24. ()Reference: Jones DK, Pierpaoli C. Confidence mapping in diffusion tensor magnetic resonance imaging tractography using a bootstrap approach. Magn Reson Med.2005 May;53(5) :1143-9. ()

# concept[].definition
Integration method, 1st orderReference: Basser PJ, Pajevic S, Pierpaoli C, Duda J, Aldroubi A. In vivo fiber tractography using DT-MRI data. Magn Reson Med. 2000 Oct;44(4) :625-32 ()Reference: Descoteaux M, Deriche R, Knösche TR, Anwander A. Deterministic and probabilistic tractography based on complex fibre orientation distributions. IEEE Trans Med Imaging.2009; 28(2) :269-86 ()

# concept[].definition
Integration method, 2nd or 4th orderReference: Basser PJ, Pajevic S, Pierpaoli C, Duda J, Aldroubi A. In vivo fiber tractography using DT-MRI data. Magn Reson Med. 2000 Oct;44(4) :625-32 ()

# concept[].definition
High Angular Resolution Diffusion ImagingReference: Tuch DS, Reese TG, Wiegell MR, Makris N, Belliveau JW, Wedeen VJ. High angular resolution diffusion imaging reveals intravoxel white matter fiber heterogeneity. Magn Reson Med.2002 Oct;48(4) :577-82. ()Reference: Descoteaux M, Deriche R, Knösche TR, Anwander A. Deterministic and probabilistic tractography based on complex fibre orientation distributions. IEEE Trans Med Imaging.2009; 28(2) :269-86 ()

# concept[].definition
Diffusion(al) Kurtosis ImagingReference: Jensen JH, Helpern JA, Ramani A, Lu H, Kaczynski K. Diffusional kurtosis imaging: the quantification of non-gaussian water diffusion by means of magnetic resonance imaging. Magn Reson Med. 2005 Jun;53(6) :1432-40. ()

# concept[].definition
Diffusion Tensor ImagingReference: Winston GP. The physical and biological basis of quantitative parameters derived from diffusion MRI. Quantitative Imaging in Medicine and Surgery. 2012;2(4) :254-265. doi:10.3978/j.issn.2223-4292.2012.12.05. ()

# concept[].definition
Diffusion Spectrum ImagingReference: Wedeen VJ, Wang RP, Schmahmann JD, Benner T, Tseng WY, Dai G, Pandya DN, Hagmann P, D'Arceuil H, de Crespigny AJ. Diffusion spectrum magnetic resonance imaging (DSI) tractography of crossing fibers. Neuroimage. 2008 Jul 15;41(4) :1267-77. doi:10.1016/j.neuroimage.2008.03.036. ()Reference: Hagmann P, Jonasson L, Maeder P, Thiran JP, Wedeen VJ, Meuli R. Understanding diffusion MR imaging techniques: from scalar diffusion-weighted imaging to diffusion tensor imaging and beyond. Radiographics.2006 Oct;26 Suppl 1:S205-23. ()

# concept[].definition
Line Scan Diffusion Imaging sequenceReference: Gudbjartsson H, Maier SE, Mulkern RV, Mórocz IA, Patz S, Jolesz FA. Line scan diffusion imaging. Magn Reson Med.1996 Oct;36(4) :509-19. ()

# concept[].definition
An Echo Planar Imaging sequence in which the entire range of phase encoding steps is acquired in one repetition.Reference: Turner R, Le Bihan D, Chesnick AS. Echo-planar imaging of diffusion and perfusion. Magn Reson Med.1991 Jun;19(2) :247-53. ()

# concept[].definition
An Echo Planar Imaging sequence in which separate parts of the range of phase encoding steps are acquired in multiple repetitions.Reference: Robson MD, Anderson AW, Gore JC. Diffusion-weighted multiple shot echo planar imaging of humans without navigation. Magn Reson Med.1997 Jul;38(1) :82-8. ()

# concept[].definition
A imaging sequence that uses a subset of k-space data from an array of receiver coils, e.g., Sensitivity Encoding.Reference: Pruessmann KP, Weiger M, Scheidegger MB, Boesiger P. SENSE: sensitivity encoding for fast MRI. Magn Reson Med.1999 Nov;42(5) :952-62. ()Reference: Deshmane A, Gulani V, Griswold MA, Seiberlich N. Parallel MR imaging. J Magn Reson Imaging. 2012 Jul;36(1) :55-72. ()

# concept[].definition
Modeling anisotropic diffusion in a volume with a tensor following a Gaussian distribution (six degrees of freedom)Reference: Basser PJ, Mattiello J, LeBihan D. Estimation of the effective self-diffusion tensor from the NMR spin echo. J Magn Reson B.1994 Mar;103(3) :247-54. ()Reference: Hagmann P1, Jonasson L, Maeder P, Thiran JP, Wedeen VJ, Meuli R. Understanding diffusion MR imaging techniques: from scalar diffusion-weighted imaging to diffusion tensor imaging and beyond. Radiographics.2006 Oct;26 Suppl 1:S205-23. ()

# concept[].definition
Modeling anisotropic diffusion in a volume by fitting of multiple tensorsReference: Ozarslan E, Mareci TH. Generalized diffusion tensor imaging and analytical relationships between diffusion tensor imaging and high angular resolution diffusion imaging. Magn Reson Med.2003 Nov;50(5) :955-65. ()Reference: Pasternak O, Assaf Y, Intrator N, Sochen N. Variational multiple-tensor fitting of fiber-ambiguous diffusion-weighted magnetic resonance imaging voxels. Magn Reson Imaging.2008 Oct;26(8) :1133-44. doi:10.1016/j.mri.2008.01.006. ()

# concept[].definition
Reconstruction of anisotropic diffusion in a volume without imposing an underlying statistical model (data-driven approach)Reference: Wedeen VJ, Hagmann P, Tseng WY, Reese TG, Weisskoff RM. Mapping complex tissue architecture with diffusion spectrum magnetic resonance imaging. Magn Reson Med.2005 Dec;54(6) :1377-86. ()Reference: Hagmann P, Jonasson L, Maeder P, Thiran JP, Wedeen VJ, Meuli R. Understanding diffusion MR imaging techniques: from scalar diffusion-weighted imaging to diffusion tensor imaging and beyond. Radiographics.2006 Oct;26 Suppl 1:S205-23. ()

# concept[].definition
Composite Hindered and Restricted Model of DiffusionReference: Assaf Y, Basser PJ. Composite hindered and restricted model of diffusion (CHARMED) MR imaging of the human brain. Neuroimage.2005 Aug 1;27(1) :48-58. ()

# concept[].definition
Diffusion Orientation TransformReference: Ozarslan E, Shepherd TM, Vemuri BC, Blackband SJ, Mareci TH. Resolution of complex tissue microarchitecture using the diffusion orientation transform (DOT). Neuroimage. 2006 Jul 1;31(3) :1086-103. Epub 2006 Mar 20. ()

# concept[].definition
Persistent Angular StructureReference: Jansons KM, Alexander DC. Persistent Angular Structure: new insights from diffusion MRI data. Dummy version. Inf Process Med Imaging.2003 Jul;18:672-83. ()

# concept[].definition
A method to estimate the distribution of fiber orientations by deconvolution of the diffusion-weighted signal attenuation measured over the surface of a sphere expressed as the convolution over the sphere of a response function.Reference: Tournier JD, Calamante F, Gadian DG, Connelly A. Direct estimation of the fiber orientation density function from diffusion-weighted MRI data using spherical deconvolution. NeuroImage. 2004 Nov;23(3) :1176-85. ()

# concept[].definition
The diffusion sensitization factor (b value) used during acquisition of the source image used for a diffusion model.

# concept[].definition
The method used to fit a set of data to a mathematical model.

# concept[].definition
Mono-exponential (single compartment) Apparent Diffusion Coefficient (ADC) model.

# concept[].definition
Bi-exponential intravoxel incoherent motion (IVIM) model.

# concept[].definition
Model fitting by using the log of the ratio of the two samples.

# concept[].definition
Model fitting by least squares method from more than two samples.

# concept[].definition
Model fitting by Levenberg-Marquardt method.

# concept[].definition
Model fitting by Segmented-Unconstrained method.

# concept[].definition
Model fitting by Segmented-Constrained method.

# concept[].definition
Model fitting by Bayesian-Probability method.

# concept[].definition
Diffusion modeling by voxelwise selection of b-values.

# concept[].definition
Coefficient reflecting the anisotropy of the tissues, derived from a diffusion weighted MR image. It represents the volume of an ellipsoid whose semimajor axes are the three eigenvalues of the diffusion tensor divided by the volume of a sphere whose radius is the mean diffusivity.

# concept[].definition
The pure diffusion coefficient, i.e., one that is not affected by T2 contrast effects.

# concept[].definition
The diffusion coefficient of a mono-exponential diffusion model (ADCm).

# concept[].definition
The slow diffusion coefficient (Ds) of a bi-exponential intravoxel incoherent motion (IVIM) diffusion model.

# concept[].definition
The fast diffusion coefficient (Df) of a bi-exponential intravoxel incoherent motion (IVIM) diffusion model.

# concept[].definition
The fast diffusion fraction of a bi-exponential intravoxel incoherent motion (IVIM) diffusion model.

# concept[].definition
The diffusion coefficient of a kurtosis diffusion model (ADCk).

# concept[].definition
The scale (theta) parameter of a gamma distribution diffusion model.

# concept[].definition
The shape (k) parameter of a gamma distribution diffusion model.

# concept[].definition
The mode (maximum value of probability density function) of a gamma distribution diffusion model. Computed as (k-1)*theta, for k >= 1.

# concept[].definition
The distributed diffusion coefficient of a stretched-exponential diffusion model (ADCs).

# concept[].definition
The anomalous exponent (stretching, alpha) parameter of a stretched-exponential diffusion model. This describes the deviation of the signal attenuation from mono-exponential behavior

# concept[].definition
The procedure report is a Radiopharmaceutical Radiation Dose report

# concept[].definition
Information pertaining to the administration of a radiopharmaceutical

# concept[].definition
Unique identification of a single radiopharmaceutical administration event.

# concept[].definition
Initial signs or symptoms of extravasation

# concept[].definition
The estimated percentage of administered activity lost at the injection site. The estimation includes extravasation, paravenous administration and leakage at the injection site.

# concept[].definition
The calculated activity at the Radiopharmaceutical Start Time when the radiopharmaceutical is administered to the patient. The residual activity (i.e., radiopharmaceutical not administered) , if measured, is reflected in the calculated value. The estimated extravasation is not reflected in the calculated value.

# concept[].definition
Radioactivity measurement of radiopharmaceutical before or during the administration.

# concept[].definition
Registered drug establishment code for product, Coding Scheme example is NDC or RxNorm

# concept[].definition
The human readable identification of the specific radiopharmaceutical dispensed quantity or dose ("dose" as unit of medication delivery, not radiation dose measure) to be administered to the patient.

# concept[].definition
Identifies the vial, batch or lot number from which the individual dispense radiopharmaceutical quantity (dose) is produced. The Radiopharmaceutical Dispense Unit Identifier records the identification for each individual dose.

# concept[].definition
Identifies the lot or unit serial number for the reagent component for the radiopharmaceutical.

# concept[].definition
Identifies the lot or unit serial number for the radionuclide component for the radiopharmaceutical.

# concept[].definition
Information pertaining to the estimated absorbed radiation dose to an organ.

# concept[].definition
Reference authorityMIRD Pamphlet No.1 (rev) ,Society of Nuclear Medicine, 1976

# concept[].definition
Reference authorityICRP, 1988. Radiation Dose to Patients from Radiopharmaceuticals. ICRP Publication 53. Ann. ICRP 18 (1-4).

# concept[].definition
Reference authorityICRP, 1998. Radiation Dose to Patients from Radiopharmaceuticals (Addendum to ICRP Publication 53). ICRP Publication 80. Ann. ICRP 28 (3).

# concept[].definition
Reference authorityICRP, 2008. Radiation Dose to Patients from Radiopharmaceuticals - Addendum 3 to ICRP Publication 53. ICRP Publication 106. Ann. ICRP 38 (1-2).

# concept[].definition
Reference authorityStabin MG, Sparks RB, Crowe E (1994)MIRDOSE: personal computer software for internal dose assessment in nuclear medicine [Computer program]

# concept[].definition
Reference authorityStabin MG, Sparks RB, Crowe E (2005) OLINDA/EXM: The Second-Generation Personal Computer Software for Internal Dose Assessment in Nuclear Medicine [Computer program]

# concept[].definition
Reference authorityThe reported organ dose is based on radiopharmaceutical's package insert.

# concept[].definition
Reference authorityThe reported organ dose is based on Institutionally approved estimates from the Radioactive Drug Research Committee (RDRC) of the institution itself.

# concept[].definition
Reference authorityThe reported organ dose is based on an Investigation new drug.

# concept[].definition
The type of device that performed the activity measurement.

# concept[].definition
The device that measures the radiation activity of the radiopharmaceutical

# concept[].definition
The number hours the patient has gone without food.

# concept[].definition
The amount of fluids the patient has consumed before the procedure.

# concept[].definition
A description of physical activity the patient performed before the start of the procedure, such as that which may affect imaging agent biodistribution.

# concept[].definition
Blockage in one of the tubes (ureters) that drain urine from the kidneys

# concept[].definition
The patient exhibits symptoms severe of jaundice and/or has a Bilirubin >10 mg/dL.

# concept[].definition
Extravasation or paravenous administration of the product is visible in the images.

# concept[].display
Cockroft-Gault Formula estimation of GFR

# concept[].definition
The measurement method of the Glomerular Filtration Rate is Cockroft-Gault Formula

# concept[].definition
The measurement method of the Glomerular Filtration Rate is CKD-EPI Formula

# concept[].definition
The measurement method of the Glomerular Filtration Rate is MDRD

# concept[].display
Glomerular Filtration Rate non-black (MDRD)

# concept[].definition
The measurement method of the Glomerular Filtration Rate is non-black MDRD

# concept[].definition
The measurement method of the Glomerular Filtration Rate is black (MDRD)

# concept[].display
Glomerular Filtration Rate female (MDRD)

# concept[].definition
The measurement method of the Glomerular Filtration Rate is female (MDRD)

# concept[].definition
The measurement method of the Glomerular Filtration Rate is Cystatin-based formula

# concept[].definition
The measurement method of the Glomerular Filtration Rate is Creatinine-based formula (Schwartz)

# concept[].definition
Small body thickness for calcium scoring adjustment. Lateral thickness is measured from skin-to-skin, at the level of the proximal ascending aorta, from an A/P localizer image.

# concept[].definition
Medium body thickness for calcium scoring adjustment. Lateral thickness is measured from skin-to-skin, at the level of the proximal ascending aorta, from an A/P localizer image.

# concept[].definition
Large body thickness for calcium scoring adjustment. Lateral thickness is measured from skin-to-skin, at the level of the proximal ascending aorta, from an A/P localizer image.

# concept[].definition
A human-readable label identifying an irradiation event.

# concept[].definition
A number that identifies a Series. Corresponds to Series Number (0020,0011) of the .

# concept[].definition
A number that identifies an Acquisition. Corresponds to Acquisition Number (0020,0012) of the .

# concept[].definition
A number that identifies an Instance. Corresponds to Instance Number (0020,0013) of the .

# concept[].definition
Acquisition where the X-Ray source does not move in relation to the patient.

# concept[].definition
Acquisition where the X-Ray source moves laterally in relation to the patient.

# concept[].definition
Acquisition where the X-Ray source moves angularly in relation to the patient.

# concept[].definition
Primary plane of a Biplane acquisition equipment.

# concept[].definition
Secondary plane of a Biplane acquisition equipment.

# concept[].definition
Continuous X-Ray radiation is applied during an irradiation event.

# concept[].definition
Pulsed X-Ray radiation is applied during an irradiation event.

# concept[].definition
Filter with variation in thickness from one edge to the opposite edge.

# concept[].definition
Filter with uniform thickness that is for spectral filtering only.

# concept[].definition
A polyline defining the outline of a lobulated finding.

# concept[].definition
A polyline defining the inner limits of a finding with fuzzy margin.

# concept[].definition
A polyline defining the outer limits of a finding with fuzzy margin.

# concept[].definition
A polyline defining the outline of the spiculations of a finding.

# concept[].definition
A polyline segment graphically indicating the location and direction of a spiculation of a finding.

# concept[].definition
A collection of points indicating the pixel locations of the spiculations of a finding.

# concept[].definition
Connected line segments indicating the center of location of a finding on an orthogonal view.

# concept[].definition
Connected line segments indicating the inner margin of the location of a finding on an orthogonal view.

# concept[].definition
Connected line segments indicating the outer location of a finding on an orthogonal view.

# concept[].definition
This procedure is intended to gather data that is used for calibration or other quality control purposes.

# concept[].definition
An artificial subject of an imaging study.

# concept[].definition
A phantom acceptable for the ACR Computed Tomography Accreditation program.

# concept[].definition
A phantom acceptable for the ACR Magnetic Resonance Imaging Accreditation program.

# concept[].definition
A phantom acceptable for the ACR Mammography Accreditation program.

# concept[].display
ACR Accreditation Phantom - Stereotactic Breast Biopsy

# concept[].definition
A phantom acceptable for the ACR Stereotactic Breast Biopsy Accreditation program.

# concept[].definition
A phantom acceptable for the ACR SPECT Accreditation program (but not for PET).

# concept[].definition
A phantom acceptable for the ACR PET Accreditation program (but not for SPECT).

# concept[].definition
A SPECT phantom with a PET faceplate acceptable for both the ACR SPECT and PET Accreditation programs.

# concept[].display
ACR Accreditation Phantom - PET Faceplate

# concept[].definition
A PET faceplate (made to fit an existing flangeless or flanged ECT phantom) acceptable for the ACR PET Accreditation program.

# concept[].definition
A phantom used for CTDI measurement in head modes according to , Ed.2.1 (Head 16 cm diameter Polymethyl methacrylate PMMA).

# concept[].definition
A phantom used for CTDI measurement in body modes according to , Ed.2.1 (Body 32cm diameter Polymethyl methacrylate PMMA).

# concept[].definition
A phantom in accordance with NEMA standard XR-21-2000.

# concept[].definition
X-Ray dose data accumulated over multiple irradiation events.

# concept[].definition
Imaging using a point X-Ray source with a diverging beam projected onto a 2 dimensional detector.

# concept[].definition
Entity over which dose accumulation values are integrated.

# concept[].definition
X-Ray dose data for a single Irradiation Event.

# concept[].definition
Material containing Niobium or a Niobium compound

# concept[].definition
Material containing Europium or a Europium compound

# concept[].definition
Describes the method used to derive the calibration factor.

# concept[].definition
Denotes the type of irradiation event recorded.

# concept[].definition
Total calculated Dose Area Product (in the scope of the including report).

# concept[].definition
Last calibration DateTime for the integrated dose meter or dose calculation.

# concept[].definition
Individual or organization responsible for calibration.

# concept[].definition
Total Dose related to Reference Point (RP). (in the scope of the including report).

# concept[].definition
Total calculated Dose Area Product applied in Fluoroscopy Modes (in the scope of the including report).

# concept[].definition
Total calculated Dose Area Product applied in Acquisition Modes (in the scope of the including report).

# concept[].definition
Dose applied in Fluoroscopy Modes, related to Reference Point (RP). (in the scope of the including report).

# concept[].definition
Dose applied in Acquisition Modes, related to Reference Point (RP). (in the scope of the including report).

# concept[].definition
Total accumulated clock time of Fluoroscopy in the scope of the including report (i.e., the sum of the Irradiation Duration values for accumulated fluoroscopy irradiation events).

# concept[].definition
Accumulated Count of exposure pulses (single or multi-frame encoded) created from irradiation events performed with high dose (acquisition).

# concept[].definition
Mode of application of X-Rays during Fluoroscopy.

# concept[].definition
Applied X-Ray Tube voltage at peak of X-Ray generation, in kilovolts; Mean value if measured over multiple peaks (pulses).

# concept[].definition
Cumulative time the patient has received X-Ray exposure during the irradiation event

# concept[].definition
Mean value of X-Ray Current Time product.

# concept[].definition
Distance to the Reference Point (RP) defined according to IEC 60601-2-43 or equipment defined.

# concept[].definition
Dose applied at the Reference Point (RP).

# concept[].definition
Positioner Primary Angle at the end of an irradiation event. For further definition see (112011, DCM, "Positioner Primary Angle").

# concept[].definition
Positioner Secondary Angle at the end of an irradiation event. For further definition see (112012, DCM, "Positioner Secondary Angle").

# concept[].definition
Clock time from the start of loading time of the first pulse until the loading time trailing edge of the final pulse in the same irradiation event.Loading time is defined in IEC 60601-1-3:2008, 3.37, and described in IEC 60601-2-54:2009, 203.4.101.3.

# concept[].definition
Orientation of the Patient with respect to Gravity.

# concept[].definition
Enhances or modifies the Patient orientation specified in Patient Orientation.

# concept[].definition
Orientation of the Patient with respect to the Head of the Table.

# concept[].definition
Distance from the X-Ray Source to the Equipment C-Arm Isocenter.(Center of Rotation).

# concept[].definition
Measured or calculated distance from the X-Ray source to the detector plane in the center of the beam.

# concept[].definition
Table Longitudinal Position with respect to an arbitrary reference chosen by the equipment. Table longitudinal motion is positive towards the left of the patient assuming the patient is positioned HEAD FIRST SUPINE.

# concept[].definition
Table Lateral Position with respect to an arbitrary reference chosen by the equipment. Table lateral motion is positive towards the head of the patient assuming the patient is positioned HEAD FIRST.

# concept[].definition
Table Height Position with respect to an arbitrary chosen reference by the equipment in (mm). Table motion downwards is positive.

# concept[].definition
Angle of the head-feet axis of the table in degrees relative to the horizontal plane. Positive values indicate that the head of the table is upwards.

# concept[].definition
Rotation of the table in the horizontal plane (clockwise when looking from above the table).

# concept[].definition
Angle of the left-right axis of the table in degrees relative to the horizontal plane. Positive values indicate that the left of the table is upwards.

# concept[].definition
X-Ray absorbing material used in the filter.

# concept[].definition
The minimum thickness of the X-Ray absorbing material used in the filters.

# concept[].definition
Table Longitudinal Position at the end of an irradiation event.

# concept[].definition
Table Lateral Position at the end of an irradiation event.

# concept[].definition
Table Height Position at the end of an irradiation event.

# concept[].definition
Identification of Acquisition Plane with Biplane systems.

# concept[].definition
Nominal Size of Focal Spot of X-Ray Tube.

# concept[].definition
Average X-Ray Tube Current averaged over time for pulse or for continuous Fluoroscopy.

# concept[].definition
Number of pulses applied by X-Ray systems during an irradiation event (acquisition run or pulsed fluoro).

# concept[].definition
Unique identification of a single irradiation event.

# concept[].definition
Angle of the X-Ray beam in degree relative to an orthogonal axis to the detector plane.

# concept[].definition
Devices used to modify the energy or energy distribution of X-Rays.

# concept[].definition
Type of filter(s) inserted into the X-Ray beam.

# concept[].definition
The maximum thickness of the X-Ray absorbing material used in the filters.

# concept[].definition
System provided definition of the Reference Point used for Dose calculations.

# concept[].definition
Distance between the collimator blades in pixel column direction as projected at the detector plane.

# concept[].definition
Distance between the collimator blades in pixel row direction as projected at the detector plane.

# concept[].definition
Collimated field area at image receptor. Area for compatibility with IEC 60601-2-43.

# concept[].definition
Pulse rate applied by equipment during Fluoroscopy.

# concept[].definition
Measured or calculated distance from the X-Ray source to the table plane in the center of the beam.

# concept[].definition
Calibrated device to perform dose measurements.

# concept[].definition
Image acquired during a specified event.

# concept[].definition
Effective Dose evaluation from the product of Dose Length Product (DLP) and the Effective Dose Conversion Factor (E/DLP in units of mSv/mGy-cm), where the ratio is derived by means of Monte Carlo computations.

# concept[].display
CTDIfreeair to E conversion via MC computation

# concept[].definition
Effective Dose evaluation from the product of the Mean CTDIfreeair and the ratio E/CTDIfreeair (mSv/mGy), where the ratio is derived by means of Monte Carlo computations.

# concept[].definition
Effective Dose evaluation from the product of Dose Length Product (DLP) and the Effective Dose Conversion Factor (E/DLP in units of mSv/mGy-cm), where the ratio is derived by means of dosimetric measurements with an anthropomorphic phantom.

# concept[].display
CTDIfreeair to E conversion via measurement

# concept[].definition
Effective Dose evaluation from the product of the Mean CTDIfreeair and the ratio E/CTDIfreeair (mSv/mGy), where the ratio is derived by means of dosimetric measurements with an anthropomorphic phantom.

# concept[].definition
The CT acquisition was performed by acquiring single or multi detector data while rotating the source about the gantry while the table is not moving. Additional slices are acquired by incrementing the table position and again rotating the source about the gantry while the table is not moving.

# concept[].definition
The CT acquisition was performed by holding the source at a constant angle and moving the table to obtain a projection image.

# concept[].definition
The CT acquisition was performed by holding the table at a constant position and acquiring multiple slices over time at the same location.

# concept[].definition
The CT acquisition was performed while rotating the source about the gantry while the table movement is under direct control of a human operator or under the control of an analysis application.

# concept[].definition
Reference authority1990 Recommendations of the International Commission on Radiological Protection (ICRP Publication 60, published as the Annals of the ICRP Vol. 21, No. 1-3, Pergamon Press,1991).

# concept[].definition
Start DateTime of the first X-Ray Irradiation Event of the accumulation within a Study.

# concept[].definition
End DateTime of the last X-Ray Irradiation Event of the accumulation within a Study.

# concept[].definition
X-Ray dose accumulated over multiple CT irradiation events.

# concept[].definition
Total number of events during the defined scope of accumulation.

# concept[].definition
The total dose length product for the defined scope of accumulation.

# concept[].definition
The total Effective Dose at the defined scope of accumulation.

# concept[].definition
Identification of the reference-patient model used when Effective Dose is evaluated via Monte Carlo calculations or from a Dose Length Product conversion factor based on Monte Carlo calculations.

# concept[].definition
References the physical phantom and the type of dosimeter used when measurements are done to establish Effective Dose Conversion Factors (E/DLP) or ratios E/CTDIfreeair.

# concept[].definition
General description of the CT Irradiation event.

# concept[].definition
Thickness of an equivalent filter in mm in Aluminum.

# concept[].definition
General description of the acquisition parameters.

# concept[].definition
Total time the patient has received X-Ray exposure during the irradiation event.

# concept[].definition
For Spiral scanning, the scanning length is the table travel in mm during the tube loading, adjusted for dynamic collimation if applicable. In the case of Spiral scanning with dynamic collimation, one may approximate scanning length as the FWHM along a line perpendicular to the tomographic plane at isocenter of the free-in-air dose profile for the entire scan.For Sequenced scanning, the scanning length is the table travel between consecutive scans times the number of scans.For Stationary and Free scanning, the scanning length is the nominal width of the total collimation.For Shuttle Mode scanning, the scanning length is the nominal width of the total collimation plus the distance between the two scanning positions.Scanning Length might be longer than the programmed acquisition length (Length of Reconstructable Volume)

# concept[].definition
The value of the nominal width referenced to the location of the isocenter along the z axis of a single row of acquired data in mm.

# concept[].definition
The value of the nominal width referenced to the location of the isocenter along the z axis of the total collimation in mm over the area of active X-Ray detection.

# concept[].definition
For Spiral scanning: Pitch Factor = (Table Feed per Rotation (mm)) /(Nominal Total Collimation Width (mm))For Sequenced scanning: Pitch Factor = (Table Feed per single Sequenced scan (mm)) /(Nominal Total Collimation Width (mm)).

# concept[].definition
"Mean CTDIvol" refers to the average value of the CTDIvol associated with this acquisition.

# concept[].definition
Identification, tube-potential, tube-current, and exposure-time parameters associated with an X-Ray source during an acquisition.

# concept[].definition
Identifies the particular X-Ray source (in a multi-source CT system) for which the set of X-Ray source parameter values is reported.

# concept[].definition
The exposure time for one rotation of the source around the object in s.

# concept[].definition
A label describing the type of phantom used for CTDIw measurement.

# concept[].definition
The CTDIfreeair Calculation Factor is the CTDIfreeair per mAs, expressed in units of mGy/mAs. The CTDIfreeair Calculation Factor may be used in one method calculating Dose.

# concept[].definition
The average value of the free-in-air CTDI associated with this acquisition.

# concept[].definition
Dose Length Product (DLP), expressed in mGy-cm, is an index characterizing the product of the CTDIvol and the length scanned.For Spiral scanning, DLP = CTDIvol ✕ Scanning Length.For Sequenced scanning, DLP = CTDIvol ✕ Table Travel Between Consecutive Scans ✕ Number of Scans.For Stationary and Free scanning, DLP = CTDIvol ✕ Nominal Total Collimation Width.For Shuttle Mode scanning, DLP = CTDIvol ✕ (Nominal Total Collimation Width + Distance Between the Two Scan Positions)

# concept[].definition
Effective Dose per DLP, reference value for Effective Dose calculation, expressed in mSv/mGY.cm.

# concept[].definition
Effective Dose Reference authority2007 Recommendations of the International Commission on Radiological Protection (ICRP Publication 103, published as the Annals of the ICRP Vol. 37, No. 2-4, Elsevier, 2007).

# concept[].definition
The type of exposure modulation used for the purpose of limiting the dose.

# concept[].definition
Measure of the detector response to radiation in the relevant image region of an image acquired with a digital X-Ray imaging system as defined in IEC 62494-1.

# concept[].definition
The target value used to calculate the Deviation Index as defined in IEC 62494-1.

# concept[].definition
A scaled representation of the accuracy of the Exposure Index compared to the Target Exposure Index as defined in IEC 62494-1.

# concept[].definition
The clinician responsible for determining that the irradiating procedure was appropriate for the indications.

# concept[].definition
The person responsible for the administration of radiation.

# concept[].definition
An irradiation event is the loading of X-Ray equipment caused by a single continuous actuation of the equipment's irradiation switch, from the start of the loading time of the first pulse until the loading time trailing edge of the final pulse. Any automatic on-off switching of the irradiation source during the event is not treated as separate events, rather the event includes the time between start and stop of irradiation as triggered by the user.

# concept[].definition
Unique Identifier of an Irradiation Event.

# concept[].definition
Method by which dose-related details of an Irradiation Event were obtained.

# concept[].definition
Total accumulated acquisition clock time in the scope of the including report (i.e., the sum of the Irradiation Duration values for accumulated acquisition irradiation events).

# concept[].definition
Direct recording of data by a relevant system.

# concept[].definition
Recording of data by a human operator, including manual transcription of electronic data.

# concept[].definition
The data is taken from an MPPS SOP Instance.

# concept[].definition
A device exposing a patient to ionizing radiation.

# concept[].definition
15cm from the isocenter towards the X-Ray source; See IEC 60601-2-43.

# concept[].definition
30cm in front (towards the tube) of the input surface of the image receptor; See FDA Federal Performance Standard for Diagnostic X-Ray Systems §1020.32(d) (3).

# concept[].definition
1cm above the patient tabletop or cradle; See FDA Federal Performance Standard for Diagnostic X-Ray Systems §1020.32(d) (3).

# concept[].definition
30cm above the patient tabletop of cradle; See FDA Federal Performance Standard for Diagnostic X-Ray Systems §1020.32(d) (3).

# concept[].definition
15cm from the centerline of the X-Ray table and in the direction of the X-Ray source; See FDA Federal Performance Standard for Diagnostic X-Ray Systems §1020.32(d) (3).

# concept[].definition
4.2cm from the breast support surface in the direction orthogonal to the support surface. This point represents the entrance point for radiation to a standard 4.2cm thick compressed breast.See Department of Health and Human Services, Food and Drug Administration. Mammography quality standards; final rule. Federal Register. Oct. 28, 1997; 68(208):55852-55994.

# concept[].definition
The data is copied from information present in the image Attributes.

# concept[].definition
The data is computed from information present in the image Attributes.

# concept[].definition
The data is derived from human-readable reports.

# concept[].definition
An identification number or code for a specific person.

# concept[].definition
The organization that issued a Person ID.

# concept[].definition
The role played by a person in an organization.

# concept[].definition
The role played by a person in a procedure.

# concept[].definition
The role played by a device in a procedure.

# concept[].definition
The name used to refer to a device; usually locally unique.

# concept[].definition
All planes of a multi-plane acquisition equipment.

# concept[].definition
The length from which images may be reconstructed (i.e., excluding any overranging performed in a spiral acquisition that is required for data interpolation).Value is distinct from (1113825, DCM, "Scanning Length"), which includes any overranging and any effects from dynamic collimation. Also distinct from any actual Reconstructed Volume, which may depend on the slice thickness chosen for a particular reconstruction.

# concept[].display
Top Z Location of Reconstructable Volume

# concept[].definition
The Z location that is the top (highest Z value) of the Reconstructable Volume. Specified as the Z component within the Patient Coordinate System defined by a specified Frame of Reference.

# concept[].display
Bottom Z Location of Reconstructable Volume

# concept[].definition
The Z location that is the bottom (lowest Z value) of the Reconstructable Volume. Specified as the Z component within the Patient Coordinate System defined by a specified Frame of Reference.

# concept[].definition
The Z location that is the top (highest Z value) of the scanning length. Specified as the Z component within the Patient Coordinate System defined by a specified Frame of Reference.

# concept[].definition
The Z location that is the bottom (lowest Z value) of the scanning length. Specified as the Z component within the Patient Coordinate System defined by a specified Frame of Reference.

# concept[].definition
The range along the z axis of the total volume irradiated, per , Ed. 3, 203.115(b).The start and stop of loading corresponding to the outer edge of the full width half maximum of the free-in-air dose profile for the beam collimation used.

# concept[].definition
Report section about cumulative dose alerts during an examination.

# concept[].definition
Flag denoting whether a DLP Alert Value was configured.

# concept[].definition
Flag denoting whether a CTDIvol Alert Value was configured.

# concept[].definition
Cumulative Dose Length Product value configured to trigger an alert.

# concept[].definition
Cumulative CTDIvol value configured to trigger an alert.

# concept[].definition
A forward estimate of the accumulated DLP plus the estimated DLP for the next Protocol Element Group.

# concept[].definition
A forward estimate at a given location of the accumulated CTDIvol plus the estimated CTDIvol for the next Protocol Element Group.

# concept[].definition
Reason provided for proceeding with a procedure that is projected to exceed a configured dose value.

# concept[].definition
Report section about dose notifications during a protocol element.

# concept[].definition
Flag denoting whether a DLP Notification Value was configured.

# concept[].definition
Flag denoting whether a CTDIvol Notification Value was configured.

# concept[].definition
Dose Length Product value configured to trigger a notification for a given protocol element.

# concept[].definition
CTDIvol value configured to trigger a notification for a given protocol element.

# concept[].definition
A forward estimate of the DLP for the next Protocol Element Group.

# concept[].definition
A forward estimate of the CTDIvol for the next Protocol Element Group.

# concept[].definition
Flag denoting whether alternative dose alert behavior has been active for CT guided interventional procedure according to the NEMA Dose Check Standard .

# concept[].definition
The amount of ionizing radiation to which the patient was exposed.

# concept[].definition
Type, amount and route of radioactive substance administered.

# concept[].display
Radiation Exposure and Protection Information

# concept[].definition
Exposure to ionizing radiation and associatedpreventive measures used to reduce the exposure of parts of the body like lead apron or eye, thyroid gland or gonad protection.

# concept[].definition
The Size-Specific Dose Estimate is a patient dose estimate that takes into account the size of the patient, such as described in or .

# concept[].definition
The side-to-side (left to right) dimension of the body part being scanned (per ).

# concept[].definition
The thickness of the body part being scanned, in the antero-posterior dimension (per ).

# concept[].definition
The diameter of the patient at a given location along the Z-axis of the patient, assuming that the patient has a circular cross-section (per ).

# concept[].definition
The Size Specific Dose Estimate is computed using Table 1B (32cm phantom) or Table 2B (16cm phantom) of .

# concept[].definition
The Size Specific Dose Estimate is computed using Table 1C (32cm phantom) or Table 2C (16cm phantom) of .

# concept[].display
AAPM 204 Sum of Lateral and AP Dimension

# concept[].definition
The Size Specific Dose Estimate is computed using Table 1A (32cm phantom) or Table 2A (16cm phantom) of .

# concept[].display
AAPM 204 Effective Diameter Estimated From Patient Age

# concept[].definition
The Size Specific Dose Estimate is computed using Table 1D (32cm phantom) or Table 2D (16cm phantom) using an effective diameter estimated from the patient's age using Table 3 of .

# concept[].definition
Values calculated from other existing parameters.

# concept[].definition
A segmented region of the detector surface within the irradiated area (but might not be near the center of the detector).

# concept[].definition
A device that creates digital images from X-Ray detectors (Direct, Indirect or Storage).

# concept[].definition
Parameters related to the X-Ray source (generator, tube, etc) are available to the recording application.

# concept[].definition
Parameters related to the X-Ray Mechanical System (Stand, Table) are available to the recording application.

# concept[].definition
Parameters related to the X-Ray Detector are available to the recording application.

# concept[].definition
Describes the radiographic method of patient, tube and detector positioning to achieve a well described projection or view.

# concept[].definition
Detector that directly transforms the input signal to pixel values.

# concept[].definition
Detector that transforms an intermediate signal into pixel values.

# concept[].definition
Storage detector that stores a signal that is later transformed by a reader into pixel values.

# concept[].definition
Film that is scanned to create pixel values.

# concept[].definition
The cassette/detector is mounted in the patient table.

# concept[].definition
The cassette/detector is mounted in an upright stand.

# concept[].definition
The cassette/detector is mounted on a c-arm.

# concept[].definition
Method of mounting or positioning a CR/DR cassette or detector.

# concept[].definition
An integrated projection radiography system capable of fluoroscopy.

# concept[].definition
A projection radiography system where the X-Ray detector, X-Ray Source and gantry components are integrated and the managing system is able to access details of each component.

# concept[].definition
A projection radiography system where the X-Ray detector, X-Ray Source and gantry components are not integrated.

# concept[].definition
Description of the algorithm used when reconstructing the image from the data acquired during the acquisition process.

# concept[].definition
An algorithm for reconstructing an image from multiple projections by back-projecting the measured values along the line of the projection and filtering the result to reduce blurring.

# concept[].definition
An algorithm for reconstructing an image from multiple projections by starting with an assumed reconstructed image, computing projections from the image, comparing the original projection data and updating the reconstructed image based upon the difference between the calculated and the actual projections.

# concept[].definition
A point at the surface of the patient within the irradiated area where the X-Ray beam enters the patient (i.e. towards the tube).

# concept[].definition
100cm from the X-Ray source along the central ray of the X-Ray beam.

# concept[].definition
The period of time from the start of a Procedure Step until the time point established by the context of the reference.

# concept[].definition
The diameter of a cylinder of water having the same X-Ray attenuation as the patient for a specified reconstructed slice (e.g., as described in ).

# concept[].display
Water Equivalent Diameter Representative Value

# concept[].definition
The Water Equivalent Diameter is a value at a single location sufficiently representative of the body region.

# concept[].display
Water Equivalent Diameter Integrated Across Scan Range

# concept[].definition
The Water Equivalent Diameter integrates values for a sample of reconstructed slices across the entire scan range.

# concept[].definition
The Water Equivalent Diameter value is derived from Raw Data rather than reconstructed slices.See .

# concept[].display
Water Equivalent Diameter From Localizer

# concept[].definition
The Water Equivalent Diameter value is derived from a Localizer image.See .

# concept[].display
Series or Instance used for Water Equivalent Diameter estimation

# concept[].definition
Unique identifier of the Series or Instance(s) used for Water Equivalent Diameter estimation, whether it be a Series of reconstructed single slice images or one or more Enhanced Multi-frame images or a Raw Data Series or Instance.

# concept[].display
Z value of location of Water Equivalent Diameter estimation

# concept[].definition
The Z location used for Water Equivalent Diameter estimation at a single location whether it be computed using a reconstructed slice or Localizer or Raw Data. Specified as the Z component within the Patient Coordinate System defined by a specified Frame of Reference.

# concept[].definition
A report describing methods of calculation of diameters of cylinders of water having the same X-Ray attenuation as reconstructed CT slices of patients described in .

# concept[].display
Estimated from Water Equivalent Diameter

# concept[].definition
The Size Specific Dose Estimate is calculated from a single Water Equivalent Diameter value using a conversion factor as described in .

# concept[].definition
The Size Specific Dose Estimate is an arithmetic average of SSDE(z), calculated from Dw(z) at several z-positions over the reconstruction length. The z-positions may or may not correspond to reconstructed slices. See .

# concept[].definition
The Water Equivalent Diameter is an arithmetic average of Dw(z) at several z-positions over the reconstruction length. The z-positions may or may not correspond to reconstructed slices. See .

# concept[].definition
The a and b coefficients of an exponential function as described in . The function generates a conversion factor based on a Water Equivalent Diameter value (Dw). Multiplying the Dw value by the conversion factor produces a Size Specific Dose Estimate.

# concept[].display
Water Equivalent Diameter From Limited FOV Images

# concept[].definition
The Water Equivalent Diameter is derived from reconstructed images that do not cover the full FOV.

# concept[].display
Size Specific Dose Estimate At Longitudinal Position Z

# concept[].definition
Estimate of the average absorbed dose to the material contained in an axial plane at longitudinal position z of the object scanned. See .

# concept[].definition
The patient relative longitudinal position at which other value(s) have been estimated.

# concept[].display
Water Equivalent Diameter At Longitudinal Position Z

# concept[].definition
Diameter of a cylinder of water having the same averaged absorbed dose as the material contained in an axial plane at longitudinal position z of the object scanned, calculable for a material of any composition, and quantifying the attenuation of any material in terms of the attenuation of water. See .

# concept[].definition
Measurement not available: Not a number (per IEEE 754).

# concept[].definition
Measurement not available: Negative Infinity (per IEEE 754).

# concept[].definition
Measurement not available: Positive Infinity (per IEEE 754).

# concept[].definition
Measurement not available: Divide by zero (per IEEE 754).

# concept[].definition
Measurement not available: Underflow (per IEEE 754).

# concept[].definition
Measurement not available: Overflow (per IEEE 754).

# concept[].definition
Measurement not available: Measurement failure.

# concept[].definition
Measurement not available: Measurement not attempted.

# concept[].definition
Measurement not available: Calculation failure.

# concept[].definition
Measurement not available: Value out of range.

# concept[].definition
Measurement not available: Value unknown.

# concept[].definition
Measurement not available: Value indeterminate.

# concept[].definition
Measures the time-of-flight of a light signal between the camera and the subject for each point of the image.

# concept[].definition
Interferometry is a family of techniques in which waves are superimposed in order to extract depth information about the scanned object.

# concept[].definition
Laser scanning describes the general method to sample or scan a surface using laser technology.

# concept[].definition
Projecting a narrow band of light onto a three-dimensionally shaped surface produces a line of illumination that appears distorted from other perspectives than that of the projector. It can be used for an exact geometric reconstruction of the surface shape.

# concept[].definition
A technique for estimating the surface normal of an object by observing that object under different lighting conditions.

# concept[].definition
A technique for estimating the surface normal of an object by observing that object under different motions.

# concept[].definition
An optical imaging technique used to increase optical resolution and contrast of a micrograph by using point illumination and a spatial pinhole to eliminate out-of-focus light in specimens that are thicker than the focal plane. It enables the reconstruction of 3D structures from the obtained images.

# concept[].definition
Point cloud that was calculated by an algorithm.

# concept[].definition
Scanning the object from different views by placing it on a rotating table.

# concept[].definition
Higher resolution with a longer acquisition time.

# concept[].definition
Lower resolution with a shorter acquisition time.

# concept[].definition
An algorithm employed to minimize the difference between two clouds of points. It iteratively revises the transformation (translation, rotation) needed to minimize the distance between the points of two point clouds.

# concept[].definition
Human controlled minimization of the distance between the points of two point clouds.

# concept[].definition
Scanning the object from different views by placing it in front of a checkerboard pattern.

# concept[].definition
Description in free form text describing the device.

# concept[].definition
Unique Device Identifiers (UDIs) of the entire equipment.

# concept[].definition
Type of source for observations quoted from an external source.

# concept[].definition
Reference to external source of quoted observations.

# concept[].definition
Documentary source of quoted observations.

# concept[].definition
Type of observer that created the observations.

# concept[].definition
Human observer created the observations.

# concept[].definition
Automated device created the observations.

# concept[].definition
Name of human observer that created the observations.

# concept[].definition
Organization or institution with which the human observer is affiliated for the context of the current observation.

# concept[].display
Person Observer's Role in the Organization

# concept[].definition
Organizational role of human observer for the context of the current observation.

# concept[].display
Person Observer's Role in this Procedure

# concept[].definition
Procedural role of human observer for the context of the current observation.

# concept[].definition
Unique identifier of automated device that created the observations.

# concept[].definition
Institution-provided identifier of automated device that created the observations.

# concept[].definition
Manufacturer of automated device that created the observations.

# concept[].definition
Manufacturer-provided model name of automated device that created the observations.

# concept[].definition
Manufacturer-provided serial number of automated device that created the observations.

# concept[].display
Device Observer Physical Location During Observation

# concept[].definition
Location of automated device that created the observations whilst the observations were being made.

# concept[].definition
Unique identifier for the Study or Requested Procedure.

# concept[].definition
Unique identifier for the Performed Procedure Step.

# concept[].definition
Identifier for the Order (or Service Request) assigned by the order placer system.

# concept[].definition
Identifier for the Order (or Service Request) assigned by the order filler system.

# concept[].definition
A departmental Information System generated number that identifies the Imaging Service Request.

# concept[].definition
Type of procedure scheduled or performed.

# concept[].definition
A patient is the subject of observations.

# concept[].definition
Fetus of patient is the subject of observations.

# concept[].definition
Specimen is the subject of observations.

# concept[].definition
Unique Identifier of patient or fetus who is the subject of observations.

# concept[].definition
Name of patient who is the subject of observations.

# concept[].definition
Identifier of patient or fetus who is the subject of observations.

# concept[].definition
Birth Date of patient who is the subject of observations.

# concept[].definition
Sex of patient who is the subject of observations.

# concept[].definition
Age of patient who is the subject of observations.

# concept[].definition
Species of patient who is the subject of observations.

# concept[].definition
Name of mother of fetus that is the subject of observations.

# concept[].definition
Unique Identifier of specimen that is the subject of observations.

# concept[].definition
Accession Number of specimen that is the subject of observations

# concept[].definition
Identifier of specimen that is the subject of observations.

# concept[].definition
Coded category of specimen that is the subject of observations

# concept[].definition
Identifier of specimen microscope slide that is the subject of observations

# concept[].definition
Unique Identifier of specimen microscope slide that is the subject of observations

# concept[].definition
The language of the content, being a language that is primarily used for human communication.

# concept[].definition
The country-specific variant of language.

# concept[].definition
The language of the value component of a name-value pair.

# concept[].definition
The language of both the name component and the value component of a name-value pair.

# concept[].display
Language of Content Item and Descendants

# concept[].definition
The language of the current Content Item (node in a tree of content) and all its descendants.

# concept[].definition
A precoordinated coded concept or text meaning for the name component of a name-value pair that is equivalent to the post-coordinated meaning conveyed by the coded name and its concept modifier children.

# concept[].definition
A precoordinated coded concept or text meaning for the value component of a name-value pair that is equivalent to the post-coordinated meaning conveyed by the coded value and its concept modifier children.

# concept[].definition
Whether or not the property concept being modified is present or absent.

# concept[].definition
A set of points on an image, that when connected by line segments, provide a polyline from which a linear measurement was inferred.

# concept[].definition
A set of points on an image, that when connected by line segments, provide a closed polyline that is the border of a defined region from which an area, or two-dimensional measurement, was inferred.

# concept[].definition
A set of points on an image, that when connected by line segments, provide a closed polyline that is a two-dimensional border of a three-dimensional region's intersection with, or projection into the image.

# concept[].definition
The imaging procedure whose results are reported.

# concept[].definition
Presence or absence of a property is undetermined

# concept[].definition
Manufacturer-provided Class UID(s) of device that created the observations.

# concept[].definition
An observation found on a prior imaging study.

# concept[].definition
An observation found on an imaging study.

# concept[].definition
An interpretation in the clinical context of the finding(s) on an imaging study.

# concept[].definition
A recommendation for management or investigation based on the findings and impressions of an imaging study.

# concept[].definition
An interpretation in the clinical context of the finding(s) on an imaging study.

# concept[].definition
Initial images used to establish a beginning condition that is used for comparison over time to look for changes. [Paraphrases NCI-PT (C1442488, UMLS, "Baseline"), which is defined as "An initial measurement that is taken at an early time point to represent a beginning condition, and is used for comparison over time to look for changes. For example, the size of a tumor will be measured before treatment (baseline) and then afterwards to see if the treatment had an effect. A starting point to which things may be compared."]

# concept[].definition
A selection of composite instances that best illustrates a particular finding.

# concept[].definition
A medical practitioner undergoing sub-specialty training.

# concept[].definition
A medical practitioner with sub-specialty training in Ultrasound.

# concept[].definition
The person responsible for performing the procedure.

# concept[].definition
The person responsible for referring the patient for the procedure.

# concept[].definition
The person responsible for requesting the procedure.

# concept[].definition
The person responsible for recording the procedure or observation.

# concept[].definition
The person responsible for verifying the recorded procedure or observation.

# concept[].definition
The person responsible for assisting with the procedure.

# concept[].definition
The person responsible for making preparations for and monitoring the procedure.

# concept[].definition
The person responsible for standing by to assist with the precedure if required.

# concept[].definition
Sex of subject undetermined at time of encoding.

# concept[].definition
Patient condition at the beginning of a healthcare encounter

# concept[].definition
Summary of a procedure, including most significant findings

# concept[].definition
Image or waveform used as source for measurement.

# concept[].definition
Summary of patient condition upon Discharge from a healthcare facility.

# concept[].definition
Proximal Anatomic Location for a differential measurement; may be considered subtype of term (363698007, SCT, "Finding Site").

# concept[].definition
Distal Anatomic Location for a differential measurement; may be considered subtype of term (363698007, SCT, "Finding Site").

# concept[].definition
Time-stamped record of events that occur during a catheterization procedure.

# concept[].definition
A recorded Patient Status or an event involving a patient.

# concept[].definition
Identification of a step, action, or phase of a procedure.

# concept[].definition
DateTime of Recording of an Entry in an Event Log.

# concept[].display
Performed Procedure Step SOP Instance UID

# concept[].definition
SOP Instance UID of a Performed Procedure Step.

# concept[].definition
SOP Class UID of a Performed Procedure Step.

# concept[].definition
Duration of a step, action, or phase of a procedure.

# concept[].definition
Beginning of a step, action, or phase of a procedure.

# concept[].definition
End of a step, action, or phase of a procedure.

# concept[].definition
Suspension of a step, action, or phase of a procedure.

# concept[].definition
Resumption of a step, action, or phase of a procedure.

# concept[].definition
Concept modifier for the DateTime of Recording of an Entry in an Event Log.

# concept[].definition
Recorded DateTime had its source in a system clock not synchronized to other recorded DateTimes.

# concept[].definition
Type of device, process or method used to acquire or derive data.

# concept[].definition
Number of Frames in a multi-frame image.

# concept[].definition
Duration of the acquisition of an image or a waveform.

# concept[].definition
Description of Material used in a procedure.

# concept[].definition
Quantity of Material used in a procedure.

# concept[].definition
Billing Code for materials used in a procedure.

# concept[].definition
Vendor or local coded value identifying a device.

# concept[].definition
Identification of a Lesion observed during an imaging procedure.

# concept[].definition
Assessment of the risk a coronary lesion presents to the health of a patient.

# concept[].definition
Identifier for an attempted Intervention.

# concept[].definition
Use of a device to deploy another device.

# concept[].definition
Action of a clinical professional at the site of percutaneous access to a patient's cardiovascular system.

# concept[].definition
The action or event of beginning circulatory support for a patient.

# concept[].definition
The action or event of ending circulatory support for a patient.

# concept[].definition
The action or event of beginning administration of oxygen to a patient.

# concept[].definition
The action or event of ending administration of oxygen to a patient.

# concept[].definition
Method of administration of oxygen to a patient by ventilator.

# concept[].definition
The action or event of assessing the clinical status of a patient.

# concept[].definition
The action or event of beginning pacing support for a patient.

# concept[].definition
The action or event of ending pacing support for a patient.

# concept[].definition
The action or event of beginning ventilation support for a patient.

# concept[].definition
The action or event of ending ventilation support for a patient.

# concept[].definition
Procedural note originated by a technologist.

# concept[].definition
Procedural note originated by a Physician.

# concept[].definition
List of references to images considered significant

# concept[].definition
List of references to DICOM SOP Instances.

# concept[].definition
Individual frames selected as a subset of a multi-frame image.

# concept[].definition
Segment selected as a subset of a segmentation image, specifically the pixels/voxels identified as belonging to the classification of the identified segment.

# concept[].definition
A device is the subject of observations.

# concept[].definition
Name or other identifier of a device that is the subject of observations.

# concept[].definition
Manufacturer of a device that is the subject of observations.

# concept[].definition
Model Name of a device that is the subject of observations.

# concept[].definition
Serial Number of a device that is the subject of observations.

# concept[].display
Device Subject Physical Location during observation

# concept[].definition
Physical Location of a device that is the subject of observations during those observations.

# concept[].definition
Unique Identifier of a device that is the subject of observations.

# concept[].definition
A one dimensional, or linear, numeric measurement between two points or features.

# concept[].definition
Distance between marks on a device of calibrated size.

# concept[].definition
A one dimensional, or linear, numeric measurement along a polyline.

# concept[].definition
Frame selected from a segmentation image, specifically the pixels/voxels identified as belonging to the classification of the segment encompassing the identified frame.

# concept[].definition
A three-dimensional numeric measurement that is approximate, based on a two-dimensional region in a single image.

# concept[].display
Volume estimated from three or more non-coplanar 2D regions

# concept[].definition
A three-dimensional numeric measurement that is approximate, based on three or more non-coplanar two-dimensional image regions.

# concept[].display
Volume estimated from two non-coplanar 2D regions

# concept[].definition
A three-dimensional numeric measurement that is approximate, based on two non-coplanar two-dimensional image regions.

# concept[].display
Volume of bounding three dimensional region

# concept[].definition
A three-dimensional numeric measurement of the bounding region of a three-dimensional region of interest in an image set.

# concept[].definition
A three-dimensional numeric measurement of the bounding sphere of a three-dimensional region of interest in an image set.

# concept[].definition
A three-dimensional numeric measurement of an ellipsoid shaped three-dimensional region of interest in an image set.

# concept[].definition
A three-dimensional numeric measurement of a sphere shaped three-dimensional region of interest in an image set.

# concept[].definition
A line segment that is an arm of a pair of arms that defines an angle, whether or not those line segments share a common vertex.

# concept[].definition
The angle on an AP radiograph of the pelvis between a line drawn parallel to the acetabular roof and a line drawn horizontally through the inferior aspect of both triradiate cartilages (Hilgenreiner's line).

# concept[].definition
An entity that has both a magnitude and a direction.

# concept[].definition
The approximate geometric location on an image or in space where an entity is located.

# concept[].definition
The length of that part of a line (a straight object having no curvature) that is bounded by two distinct end points and contains every point on the line between those two end points, including both of the two end points.

# concept[].definition
Coordinates of a point on a defined path.

# concept[].definition
Surface of an identified or measured volume.

# concept[].definition
Series of image instances used as source data for a segmentation.

# concept[].definition
Image instances used as source data for a segmentation.

# concept[].definition
Indicates the location of the area of interest as measured from the nipple of the breast.

# concept[].definition
Indicates the location of the area of interest as measured from the most direct skin point of the breast.

# concept[].definition
Indicates the location of the area of interest as measured from the chest wall.

# concept[].definition
Patient exposure to ionizing radiation (procedure).

# concept[].definition
The act of communicating actionable findings to a responsible receiver.

# concept[].definition
Reference is to a Doppler waveform acquired simultaneously with an image.

# concept[].definition
Reference is to a Hemodynamic waveform acquired simultaneously with an image.

# concept[].definition
Reference is to a ECG waveform acquired simultaneously with an image.

# concept[].definition
Reference is to a voice narrative recording acquired simultaneously with an image.

# concept[].definition
A waveform representing chest expansion and contraction due to respiratory activity, measured simultaneously with the acquisition of this Image.

# concept[].definition
Arterial pulse waveform obtained simultaneously with acquisition of a referencing image.

# concept[].definition
Phonocardiographic waveform obtained simultaneously with acquisition of a referencing image.

# concept[].display
RT treatment plan for the position being verified

# concept[].definition
The referenced instance is an RT treatment plan of some type, which contains treatment positioning information, which has been verified using the information in the referencing instance.

# concept[].definition
Image providing an anatomical reference on the patient under examination, for the purpose of defining the location of the ensuing imaging.

# concept[].definition
Image providing an anatomical reference on the patient under examination, for the purpose of planning or documenting a biopsy.

# concept[].definition
Image providing a partial view of the target anatomy, when the target anatomy is too large for a single image.

# concept[].definition
Image providing a view of the target anatomy in a different imaging plane, typically from a near perpendicular angle.

# concept[].definition
Image providing a view of the target anatomy in a different imaging plane, typically with a small angular difference.

# concept[].definition
Image related to a non-image information object.

# concept[].definition
Image where signals are identified and separated according to their frequencies.

# concept[].display
Spectroscopy Data for Water Phase Correction

# concept[].definition
MR spectroscopy data acquired to correct the phase of the diagnostic data for the phase signal of the Water.

# concept[].definition
An image that has not already been lossy compressed that is used as the source for creation of a lossy compressed image.

# concept[].display
Mask image for image processing operation

# concept[].definition
Image used as the mask for an image processing operation, such as subtraction.

# concept[].display
Source image for image processing operation

# concept[].definition
Image used as the source for an image processing operation.

# concept[].display
Source series for image processing operation

# concept[].definition
Series used as the source for an image processing operation.

# concept[].definition
Image used as the source for a derived or compressed image.

# concept[].definition
Image encoded with a lossy compression transfer syntax.

# concept[].definition
SOP Instance encoded with a different SOP Class but otherwise equivalent data.

# concept[].definition
Full fidelity image, uncompressed or lossless compressed.

# concept[].definition
Image encoded with a different photometric interpretation.

# concept[].definition
Image used as a source for a montage (stitched) image.

# concept[].definition
An image that has previously been lossy compressed that is used as the source for creation of another lossy compressed image.

# concept[].definition
HL7 Document Architecture (CDA) Document that contains clinical content equivalent to the referencing Instance.

# concept[].definition
Instance that contains a displayable complete rendering of the referencing Instance.

# concept[].definition
Instance that contains a displayable partial rendering of the referencing Instance.

# concept[].definition
Instance that contains a displayable complete rendering of the referencing Instance, plus additional content such as inline rendering of referenced images.

# concept[].definition
Document whose content has been wholly or partially transformed to create the referencing document.

# concept[].definition
Image showing structural anatomic features.

# concept[].definition
Image showing physical or chemical activity.

# concept[].definition
Image providing the same view of the target anatomy acquired using only a specific imaging wavelength, frequency or energy.

# concept[].definition
Image providing an anatomical reference on the patient under examination, for the purpose of documenting the location of device such as a diagnostic or therapeutic catheter.

# concept[].definition
Image providing a graphic view of the distribution of radiation dose.

# concept[].display
Acquisition frames corresponding to volume

# concept[].definition
The referenced image is the source of spatially-related frames from which the referencing 3D volume data was derived.

# concept[].display
Volume corresponding to spatially-related acquisition frames

# concept[].definition
3D Volume containing the spatially-related frames in the referencing instance.

# concept[].definition
Instance acquired prior to the referencing instance in a set of consecutively acquired instances.

# concept[].definition
Instance acquired subsequent to the referencing instance in a set of consecutively acquired instances.

# concept[].definition
Image of the same target area at lower resolution acquired in the same acquisition process.

# concept[].definition
Image of the same target area at higher resolution acquired in the same acquisition process.

# concept[].display
Same acquisition at different focal depth

# concept[].definition
Image of the same target area at different focal depth (Z-plane) acquired in the same acquisition process.

# concept[].display
Same acquisition at different spectral band

# concept[].definition
Image of the same target area at different spectral band acquired in the same acquisition process.

# concept[].definition
Image specifically targeting the container label.

# concept[].definition
Source image from which FOR PRESENTATION images were created.

# concept[].definition
The reference is to a predecessor report that has been replaced by the current report.

# concept[].definition
The reference is to a predecessor report to which the current report provides an addendum.

# concept[].definition
A report that precedes the final report and may contain only limited information; it may be time sensitive, and it is not expected to contain all the reportable findings.

# concept[].definition
The dose object created was calculated by summation of existing, previously calculated, RT Dose instances.

# concept[].display
Composed from prior doses and current plan

# concept[].definition
The dose object created was calculated by summation of existing, previously calculated, RT Dose instances and dose newly calculated by the application. The newly calculated dose may or may not exist as an independent object.

# concept[].definition
RT Dose Instances used as source for calculated dose.

# concept[].definition
An assessment of the dose delivery parameters performed before treatment.

# concept[].definition
An assessment of consistency with a previously quality-assured treatment plan performed before treatment.

# concept[].definition
The basis of the assessment was a comparison object.

# concept[].definition
The basis of the assessment was a set of rules on expected values, ranges and relationships.

# concept[].definition
The dose object created was calculated using previously calculated RT Dose Instances by taking radiobiological effects into account.

# concept[].display
Composed with weighting for fractions delivered

# concept[].definition
The dose object was calculated based on weighted contributions along the actual number of fractions delivered.

# concept[].definition
Concentration of the chemically or physically interesting (active) ingredient of a drug or contrast agent as delivered in product form from the manufacturer, typically in mg/ml.

# concept[].definition
X-Ray absorption of the active ingredient of a contrast agent ingredient is greater than the absorption of water (tissue).

# concept[].definition
Number of units of substance administered to a patient.

# concept[].definition
Mass of substance administered to a patient.

# concept[].definition
Human readable label of the radiotherapy plan.

# concept[].definition
The index of the fraction of the radiotherapy plan to be delivered.

# concept[].definition
The total number of prescribed radiotherapy fractions.

# concept[].definition
The number of fully completed radiotherapy fractions of the radiotherapy plan to be delivered. Partially completed fractions are not included.

# concept[].definition
Whether or not the patient has been checked-in, i.e., are physically present and are waiting to be called in to the treatment room.

# concept[].definition
The referenced beam number within the radiotherapy plan to be delivered.

# concept[].definition
Method of deriving or calculating a measured value.

# concept[].definition
Assessment of a measurement relative to a normal range of values; may be considered subtype of term (363713009, SCT, "has interpretation").

# concept[].definition
Status of selection of a measurement for further processing or use.

# concept[].definition
Description of a population of measurements.

# concept[].definition
Bibliographic or clinical reference for a Description of a population of measurements.

# concept[].definition
Description of a normal range of values for a measurement concept.

# concept[].definition
Bibliographic or clinical reference for a Description of a normal range of values.

# concept[].definition
Observation value selected by user for further processing or use, or as most representative.

# concept[].definition
Observation value is the recently obtained, and has been selected for further processing or use.

# concept[].definition
Observation value is the mean of several measurements, and has been selected for further processing or use.

# concept[].definition
Standard deviation of a measurement in a reference population.

# concept[].definition
Percentile Ranking of an observation value with respect a reference population.

# concept[].definition
Z-score of an observation value with respect a reference population, expressed as the dimensionless quantity (x-m) /s, where (x-m) is the deviation of the observation value (x) from the population mean (m), and s is the standard deviation of the population.

# concept[].definition
2 Sigma deviation of a measurement in a reference population.

# concept[].definition
Formula used to compute a derived measurement.

# concept[].definition
Bibliographic reference to a formula used to compute a derived measurement; reference may be to a specific equation in a journal article.

# concept[].definition
Bibliographic reference to a Table of Values used to look up a derived measurement.

# concept[].definition
Bibliographic reference to a method used to compute a derived measurement.

# concept[].definition
A Table of Values used to look up a derived measurement.

# concept[].definition
Factor (divisor or multiplicand) for normalizing a measurement.

# concept[].definition
Measurement obtained by observer estimation, rather than with a measurement tool or by calculation

# concept[].definition
Identified issue about a state or process that has the potential to require intervention or management.

# concept[].definition
DateTime concern noted (noted by whom is determined by context of use).

# concept[].definition
Place at which healthcare services may be provided.

# concept[].definition
Identification of a healthcare provider who performed a healthcare service; may be either a person or an organization.

# concept[].definition
Type or identifier of a medical device used on, in, or by a patient.

# concept[].definition
Cardiac stress test using pharmacologic and exercise stressors

# concept[].definition
Cardiac stress test using an implanted or external cardiac pacing device

# concept[].definition
Procedure for correction of congenital cardiovascular deformity

# concept[].definition
Process of placing patient in the anticipated treatment position, including specification and location of positioning aids, and other treatment delivery accessories.

# concept[].display
RT Patient Position Acquisition, single plane MV

# concept[].definition
Acquisition of patient positioning information, using single-plane megavoltage imaging.

# concept[].display
RT Patient Position Acquisition, dual plane MV

# concept[].definition
Acquisition of patient positioning information, using dual-plane megavoltage imaging.

# concept[].display
RT Patient Position Acquisition, single plane kV

# concept[].definition
Acquisition of patient positioning information, using single-plane kilovoltage imaging.

# concept[].display
RT Patient Position Acquisition, dual plane kV

# concept[].definition
Acquisition of patient positioning information, using dual-plane kilovoltage imaging.

# concept[].display
RT Patient Position Acquisition, dual plane kV/MV

# concept[].definition
Acquisition of patient positioning information, using dual-plane combination kilovoltage and megavoltage imaging.

# concept[].definition
Acquisition of patient positioning information, using kilovoltage CT imaging.This code encompasses both Cone-Beam CT and conventional CT.

# concept[].definition
Acquisition of patient positioning information, using megavoltage CT imaging.This code encompasses both Cone-Beam CT and conventional CT.

# concept[].display
RT Patient Position Acquisition, Optical

# concept[].definition
Acquisition of patient positioning information, using optical imaging.

# concept[].display
RT Patient Position Acquisition, Ultrasound

# concept[].definition
Acquisition of patient positioning information, using ultrasound imaging.

# concept[].display
RT Patient Position Acquisition, Spatial Fiducials

# concept[].definition
Acquisition of patient positioning information, using spatial fiducials.

# concept[].display
RT Patient Position Registration, single plane

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using single-plane images.

# concept[].display
RT Patient Position Registration, dual plane

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using dual-plane images.

# concept[].display
RT Patient Position Registration, 3D CT general

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using 3D CT images and an unspecified registration approach.

# concept[].display
RT Patient Position Registration, 3D CT marker-based

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using 3D CT images and a marker-based registration approach.

# concept[].display
RT Patient Position Registration, 3D CT volume-based

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using 3D CT images and a volume-based registration approach.

# concept[].display
RT Patient Position Registration, 3D on 2D reference

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using 3D verification images and 2D reference images.

# concept[].display
RT Patient Position Registration, 2D on 3D reference

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using 2D verification images and 3D reference images.

# concept[].display
RT Patient Position Registration, Optical

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using optical images.

# concept[].display
RT Patient Position Registration, Ultrasound

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using ultrasound images.

# concept[].display
RT Patient Position Registration, Spatial Fiducials

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using spatial fiducials.

# concept[].definition
Adjustment of patient position such that the patient is correctly positioned for treatment.

# concept[].display
RT Patient Position In-treatment-session Review

# concept[].definition
Review of patient positioning information in the process of delivering a treatment session.

# concept[].display
RT Treatment Simulation with Internal Verification

# concept[].definition
Simulated radiotherapy treatment delivery using verification integral to the Treatment Delivery System.

# concept[].display
RT Treatment Simulation with External Verification

# concept[].definition
Simulated radiotherapy treatment delivery using verification by a external Machine Parameter Verifier.

# concept[].definition
Radiotherapy treatment delivery using verification integral to the Treatment Delivery System.

# concept[].definition
Radiotherapy treatment delivery using verification by a external Machine Parameter Verifier.

# concept[].display
RT Treatment QA with Internal Verification

# concept[].definition
Quality assurance of a radiotherapy treatment delivery using verification integral to the Treatment Delivery System.

# concept[].display
RT Treatment QA with External Verification

# concept[].definition
Quality assurance of a radiotherapy treatment delivery using verification by a external Machine Parameter Verifier.

# concept[].definition
Quality assurance of a Treatment Delivery Device.

# concept[].definition
Perform Quality Assurance on an RT Plan by evaluating dosimetric content of the current RT Plan.

# concept[].display
RT Treatment QA by RT Plan Difference Check

# concept[].definition
Perform Quality Assurance on an RT Plan by comparing the content of previously quality-assessed RT Plans with the current RT Plan.

# concept[].display
RT Treatment QA by RT Ion Plan Dose Check

# concept[].definition
Perform Quality Assurance on an RT Ion Plan by evaluating dosimetric content of the current RT Ion Plan.

# concept[].display
RT Treatment QA by RT Ion Plan Difference Check

# concept[].definition
Perform Quality Assurance on an RT Ion Plan by comparing the content of previously quality-assessed RT Ion Plans by the current RT Ion Plan.

# concept[].display
RT Image-Guided Patient Positioning and Treatment Delivery

# concept[].definition
Radiotherapy image-guided patient positioning and treatment delivery using verification integral to the Treatment Delivery System.

# concept[].definition
Acquisition of radiotherapy patient positioning information, using magnetic resonance imaging.

# concept[].definition
Registration of intended and actual patient position prior to treatment delivery, using MR images and an unspecified registration approach.

# concept[].definition
Indicates whether the treatment to be delivered is a complete fraction or a continuation of previous incompletely treated fraction.

# concept[].display
Patient connected to continuous monitoring

# concept[].definition
Patient connected to continuous monitoring.

# concept[].display
Patient disconnected from continuous monitoring

# concept[].definition
Patient disconnected from continuous monitoring.

# concept[].display
Hemostasis not achieved - actively bleeding

# concept[].definition
Hemostasis not achieved - actively bleeding.

# concept[].definition
Patient discharged from department or laboratory.

# concept[].definition
Identified personnel or staff arrived in procedure room.

# concept[].definition
Identified personnel or staff departed procedure room.

# concept[].definition
Page sent to identified personnel or staff.

# concept[].definition
Consultation with identified personnel or staff.

# concept[].definition
Office of identified personnel or staff was called.

# concept[].definition
Log of events occurring prior to the current procedure.

# concept[].definition
Analysis or measurements for current procedure (purpose of reference to evidence document).

# concept[].definition
Identifier of Consumable taken from inventory.

# concept[].definition
Identifier of Consumable returned to inventory.

# concept[].definition
Identifier of consumable whose remaining content has been disposed.

# concept[].definition
Identifier of Consumable determined to be unusable.

# concept[].definition
Identifier of Drug whose administration has started.

# concept[].definition
Identifier of Drug whose administration has ended.

# concept[].definition
Identifier of Drug administered as part of procedure.

# concept[].definition
Identifier of Contrast agent whose administration has started.

# concept[].definition
Identifier of Contrast agent whose administration has ended.

# concept[].definition
Identifier of Contrast agent administered.

# concept[].definition
Identifier of Infusate whose administration has started.

# concept[].definition
Identifier of Infusate whose administration has ended.

# concept[].definition
Action of a device traversing a vascular lesion.

# concept[].definition
Action of a clinical professional performed on a patient for therapeutic purpose.

# concept[].definition
Volume of Drug, Contrast agent, or Infusate administered.

# concept[].definition
Undiluted dose of Drug, Contrast agent, or Infusate administered.

# concept[].definition
Concentration of Drug, Contrast agent, or Infusate administered.

# concept[].definition
Rate of Drug, Contrast agent, or Infusate administration.

# concept[].definition
Duration of Drug, Contrast agent, or Infusate administration.

# concept[].definition
Volume of Drug, Contrast agent, or Infusate unadministered or discarded.

# concept[].definition
Numeric parameter of Curvature of Catheter.

# concept[].definition
Measured change of patient electrocardiographic ST level relative to baseline measurement.

# concept[].definition
Anatomic term modifier indicating aneurysm on cited vessel is the subject of the finding.

# concept[].display
Graft to cited segment, proximal section

# concept[].definition
Anatomic term modifier indicating proximal section of graft to cited vessel is the subject of the finding.

# concept[].definition
Anatomic term modifier indicating mid section of graft to cited vessel is the subject of the finding.

# concept[].definition
Anatomic term modifier indicating distal section of graft to cited vessel is the subject of the finding.

# concept[].definition
Lesion stenosis measured prior to any interventional procedure

# concept[].definition
Lesion stenosis measured after an interventional procedure

# concept[].definition
Assessment of perfusion across a coronary lesion measured prior to any interventional procedure.

# concept[].definition
Assessment of perfusion across a coronary lesion measured after an interventional procedure.

# concept[].definition
Indication that device is the primary (first and/or most significant) device used for interventional therapy of a particular pathology.

# concept[].definition
Atrial pressure measurements, report section.

# concept[].definition
Blood velocity measurements, report section.

# concept[].definition
Location from which the patient was transferred.

# concept[].definition
Indication that the procedure includes a percutaneous coronary intervention.

# concept[].definition
Finding of probability and/or severity of thrombus.

# concept[].definition
Severity of Calcification, property of lesion.

# concept[].definition
Lesion Morphology; form and/or structural properties of lesion.

# concept[].definition
Vessel Morphology; form and/or structural properties of vessel.

# concept[].definition
Technique (device or procedure) of support for patient circulatory system; hemodynamic support.

# concept[].definition
Indication that the current study data has been compared with prior study data.

# concept[].definition
The date and time on which a procedure was performed on a patient.

# concept[].definition
Beat Number; ordinal of cardiac cycle within an acquisition.

# concept[].definition
Complex coded semantic unit, consisting of several coded components.

# concept[].definition
Trend (temporal progression) of a clinical condition, finding, or disease.

# concept[].definition
Conjunctive term between semantic units.

# concept[].definition
ECG Global Measurements, report section.

# concept[].definition
Derived cross-sectional area of a vessel or anatomic feature, other than a cardiac valve.

# concept[].definition
Rate of blood flow through Pulmonary artery.

# concept[].definition
DateTime of patient discharge from hospital admission.

# concept[].display
Coronary Artery Bypass During This Admission

# concept[].definition
Indication that a Coronary Artery Bypass operation was performed during the current hospital admission.

# concept[].definition
Indication that the patient died during the current hospital admission.

# concept[].definition
Indication that the patient died during the current Catheterization procedure.

# concept[].definition
Finding of type of Myocardial Infarction.

# concept[].definition
Finding of Coronary lesion with greater than 50% stenosis.

# concept[].definition
Finding of Acute Myocardial Infarction Presence as indication for interventional procedure.

# concept[].definition
DateTime of first determination of elevated ECG ST segment, as indication of Myocardial Infarction.

# concept[].display
Number of lesion interventions attempted

# concept[].definition
Number of lesion interventions attempted during current procedure.

# concept[].display
Number of lesion interventions successful

# concept[].definition
Number of lesion interventions successful during current procedure, where the residual post intervention stenosis is less than or equal to 50% of the arterial luminal diameter, TIMI Flow is 3 and the minimal decrease in stenosis was 20%.

# concept[].definition
Overall success of interventional procedure.

# concept[].definition
Lesion Intervention Information, report section.

# concept[].definition
Indication that Myocardial Infarction occurred during current procedure.

# concept[].definition
Creatine Kinase-MB value at baseline (start of procedure).

# concept[].definition
Creatine Kinase-MB highest value measured during procedure.

# concept[].definition
Time interval between ECG R-wave peaks in subsequent cardiac cycles.

# concept[].definition
Elapsed time from injection of an indicator bolus until it is observed at another location.

# concept[].definition
Pulse Strength; palpable strength of systolic flow.

# concept[].definition
The secondary peak pressure in the atrium during atrial contraction.

# concept[].definition
Venous or atrial pressure minimum during ventricular systole, after A-wave.

# concept[].definition
Venous or atrial pressure minimum when tricuspid valve opens during diastole, after V-wave.

# concept[].definition
Atrial pressure upon closure of tricuspid and mitral valves.

# concept[].definition
Environmental characteristics in the procedure room.

# concept[].definition
Oxygen concentration in the procedure room.

# concept[].definition
Barometric pressure in the procedure room.

# concept[].definition
Framingham Study Comparative Average10 Year CHD Risk.

# concept[].definition
Framingham Study Comparative Low10 Year CHD Risk.

# concept[].definition
Framingham Study LDL Cholesterol Score Sheet for Men.

# concept[].definition
Framingham Study LDL Cholesterol Score Sheet for Women.

# concept[].definition
Framingham Study Total Cholesterol Score Sheet for Men.

# concept[].definition
Framingham Study Total Cholesterol Score Sheet for Women.

# concept[].display
Max volume normalized to 50mmHg pulse pressure

# concept[].definition
Max volume normalized to 50mmHg pulse pressure.

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.003207*WT[g]^(0.7285-0.0188​​*log(WT[g]))*HT[cm]^0.3 [Boyd E, The growth of the surface area of the human body. Minneapolis: University of Minnesota Press, 1935, eq. (36) ].

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.007184*WT[kg]^0.425​*HT[cm]^0.725 [Dubois and Dubois, Arch Int Med 1916 17:863-71].

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.0235*WT[kg]^0.51456​​*HT[cm]^0.42246[Gehan EA, George SL, 'Estimation of human body surface area from height and weight', Cancer Chemother Rep 1970 54:225-35].

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.024265*WT[kg]^0.5378​*HT[cm]^0.3964[Haycock G.B., Schwartz G.J., Wisotsky D.H. 'Geometric method for measuring body surface area: A height weight formula validated in infants, children and adults.' The Journal of Pediatrics 1978 93:1:62-66].

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = (HT[m]*WT[kg]/36)^0.5[Mosteller, R.D. 'Simplified Calculation of Body Surface Area.' N Engl J Med 1987 Oct 22;317(17):1098].

# concept[].definition
Body Surface Area computed from patient weight:BSA = 1321 + 0.3433 * WT[kg] (for pediatrics 3-30 kg) [Current, J.D. 'A Linear Equation For Estimating The Body Surface Area In Infants And Children', The Internet Journal of Anesthesiology. 1998. 2:2].

# concept[].definition
BSA = 0.0004688*(1000*WT)^(0.8168-0.0154​*log(1000*WT))Where (WT is weight in kilogram)Units = m2Boyd, Edith. The Growth of the Surface Area of the Human Body(originally published in 1935 by the University of Minnesota Press), Greenwood Press, Westport, Connecticut, 1975, p. 102.Equation (35).

# concept[].definition
Equation for estimated oxygen consumption: VO2male = BSA (138.1 - 11.49 * loge(age) + 0.378 * HRf).

# concept[].definition
Equation for estimated oxygen consumption: VO2female = BSA (138.1 - 17.04 * loge(age) + 0.378 * HRf).

# concept[].definition
Equation for estimated oxygen consumption: VO2 = VeSTPD * 10 * (FIO2 - FE02).

# concept[].definition
Equation for estimated oxygen consumption: VO2 = 152 * BSA.

# concept[].definition
Equation for estimated oxygen consumption: VO2 = 175 * BSA.

# concept[].definition
Equation for estimated oxygen consumption: VO2 = 176 * BSA.

# concept[].definition
Robertson & Reid Table for estimated oxygen consumption.

# concept[].definition
Fleisch table for estimated oxygen consumption.

# concept[].definition
Boothby table for estimated oxygen consumption.

# concept[].definition
Estimate of Oxygen partial pressure at 50% saturation for premature infants less than 3 days old: P50 = 19.9.

# concept[].definition
Estimate of Oxygen partial pressure at 50% saturation for infants less than 1 day old: P50 = 21.6.

# concept[].definition
Estimate of Oxygen partial pressure at 50% saturation for infants less than 30 days old: P50 = 24.6.

# concept[].definition
Estimate of Oxygen partial pressure at 50% saturation for patients less than 18 years old: P50 = 27.2.

# concept[].definition
Estimate of Oxygen partial pressure at 50% saturation for patients less than 40 years old: P50 = 27.4.

# concept[].definition
Estimate of Oxygen partial pressure at 50% saturation for patients more than 60 years old: P50 = 29.3.

# concept[].display
Area = Flow / 44.5 * sqrt(Gradient[mmHg])

# concept[].definition
Cardiac valve area computed from flow and pressure gradient: Area = Flow / 44.5 * sqrt(Gradient[mmHg]) [Gorlin and Gorlin, Am Heart J, 1951].

# concept[].display
MVA = Flow / 38.0 * sqrt(Gradient[mmHg])

# concept[].definition
Mitral valve area computed from flow and pressure gradient: Mitral valve Area = Flow / 38.0 * sqrt(Gradient[mmHg]) [Gorlin and Gorlin, Am Heart J, 1951].

# concept[].definition
Body Mass Index computed from weight and height: BMI = Wt/Ht^2.

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.007358*WT[kg]^0.425​*HT[cm]^0.725(for East Asian adult, aged 15+ years) [Kanai Izumi, Masamitsu Kanai, 'Clinical examination method summary'].

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.010265*WT[kg]^0.423​*HT[cm]^0.651 (For East Asian child aged 12-14 years).

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.008883*WT[kg]^0.444​*HT[cm]^0.663 (For East Asian child aged 6-11 years).

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.038189*WT[kg]^0.423​*HT[cm]^0.362 (For East Asian child aged 1-5 years).

# concept[].definition
Body Surface Area computed from patient height and weight: BSA = 0.009568*WT[kg]^0.473​*HT[cm]^0.655 (For East Asian child aged 0-12 months).

# concept[].definition
Anatomy could not be visualized for the purpose of evaluation.

# concept[].definition
Factor by which a measured or calculated value is multiplied to obtain the estimated real-world value.

# concept[].definition
External Elastic Membrane (EEM) diameter measured through the center point of the vessel. Center point of the vessel is defined as the center of gravity of the EEM area. The EEM is a discrete interface at the border between the media and the adventitia.

# concept[].definition
The distance from intimal leading edge to the external elastic membrane along any line passing through the luminal center, which is defined as the center of gravity of the lumen area.

# concept[].definition
Vessel area measured at the External Elastic Membrane (EEM), a discrete interface at the border between the media and the adventitia.

# concept[].definition
Area within the EEM occupied by atheroma, regardless of lumen compromise. Plaque plus Media Area = EEM cross-sectional area - vessel lumen cross-sectional area.

# concept[].definition
Measurement of in-stent restenosis. In-Stent Intimal Area = Stent cross-sectional area - vessel lumen cross-sectional area.

# concept[].definition
Longitudinal extent of the Vascular Volume Measurement. This is the distance from the distal edge to the proximal edge of the Volume measurement.

# concept[].definition
Longitudinal distance from the closest edge of a fiducial feature or reference location to the start of the vascular measurement. This value will be a positive if the measurement is distal to the fiducial feature or reference location, or negative if the measurement is proximal to the fiducial feature or reference location.

# concept[].definition
In-Stent Neointimal Volume / Stent Volume.

# concept[].definition
Reference, normally anatomical, which is used for locating the position of a measurement.

# concept[].definition
Measurement of vessel lumen eccentricity. Lumen Eccentricity Index = (maximum vessel lumen diameter - minimum vessel lumen diameter) / maximum vessel lumen diameter. Lumen diameters are measured through the center point of the lumen, which is defined as the center of gravity of the lumen area.

# concept[].definition
Plaque plus Media Eccentricity Index = (maximum Plaque plus media thickness - minimum Plaque plus media thickness) / maximum Plaque plus media thickness.

# concept[].definition
Measurement of increase or decrease in EEM area that occurs during the development of atherosclerosis. Remodeling Index = Lesion EEM area / reference EEM area.

# concept[].definition
Measurement of stent circularity. Stent Symmetry Index = (maximum stent diameter - minimum stent diameter) / maximum stent diameter.

# concept[].definition
Measurement of stent area relative to the reference lumen area. Stent Expansion Index = Minimum stent area / reference vessel lumen cross-sectional area.

# concept[].definition
Measurement of vessel lumen eccentricity. Lumen Shape Index = (2p * sqrt(Vessel lumen cross-sectional area / p) / Lumen Perimeter) 2Reference: Tobis & Yock, "Intravascular Ultrasound Imaging", Chapter 7.

# concept[].definition
Lumen diameter ratio = minimum vessel lumen diameter / maximum vessel lumen diameter, measured at the same cross section in the vessel. Lumen diameters are measured through the center point of the lumen, which is defined as the center of gravity of the lumen area.

# concept[].definition
Stent diameter ratio = Minimum stent diameter / Maximum stent diameter, measured at the same cross section in the vessel. Stent diameters are measured through the center point of the stent, which is defined as the center of gravity of the stent area.

# concept[].definition
EEM diameter ratio = minimum EEM diameter / maximum EEM diameter. Measured at the same cross section in the vessel.

# concept[].definition
Fractional area within the External Elastic Membrane (EEM) occupied by atheroma. Plaque Burden = (EEM area - vessel lumen cross-sectional area) / EEM area.

# concept[].definition
Angular measurement of a Calcium deposit with the apex located at the center of the lumen, which is defined as the center of gravity of the lumen area.

# concept[].definition
Plaque characterized by low density or echogenicity.

# concept[].definition
Abnormal thickening of the intima within the stented segment.

# concept[].definition
Lumen surrounded by all three layers of the vessel-intima, media, and adventitia.

# concept[].definition
A channel, usually parallel to the true lumen, which does not communicate with the true lumen over a portion of its length.

# concept[].definition
Plaque ulceration with a tear detected in a fibrous cap.

# concept[].definition
Length of gap between two consecutive stents.

# concept[].definition
Worst stenosis - the stenosis with the smallest lumen size within a vessel segment.

# concept[].definition
2nd most severe stenosis within a vessel segment.

# concept[].definition
3rd most severe stenosis within a vessel segment.

# concept[].definition
4th most severe stenosis within a vessel segment.

# concept[].definition
External Elastic Membrane (EEM) volume measured within a specified region. The EEM is a discrete interface at the border between the media and the Adventitia.

# concept[].definition
Lumen volume measured within a specified region.

# concept[].definition
The amount of plaque between the lumen and stent, within the stent region; In-stent restenosis. In-Stent Neointimal Volume = Stent Volume - Lumen Volume.

# concept[].definition
The amount of plaque between the stent and the EEM, within the stent region. Native Plaque Volume = EEM Volume - Stent Volume.

# concept[].definition
Total amount of plaque between the EEM and the Lumen, over the entire region that is measured. Total Plaque Volume = EEM Volume - Lumen Volume.

# concept[].definition
Proximal reference segment measurement site. Typically the site with the largest lumen proximal to a stenosis but within the same segment (usually within 10 mm of the stenosis with no major intervening branches).

# concept[].definition
Distal reference segment measurement site. Typically the site with the largest lumen distal to a stenosis but within the same segment (usually within 10 mm of the stenosis with no major intervening branches).

# concept[].definition
Measurement region that encompasses the entire vessel imaged in a single pullback acquisition.

# concept[].definition
Measurement region occupied by the stent.

# concept[].definition
Region starting at the proximal edge of the Stent and extending several millimeters (usually 5 mm) proximal to the Stent edge.

# concept[].definition
Region starting at the distal edge of the Stent and extending several millimeters (usually 5 mm) distal to the Stent edge.

# concept[].definition
Classification of dissections in a vessel.

# concept[].definition
Separation of neointimal hyperplasia from stent struts, usually seen only after treatment of in-stent restenosis.

# concept[].definition
Plaque with a thin cap fibrous atheroma that is at increased risk of rupture and thrombosis (or re-thrombosis) and rapid stenosis progression.

# concept[].definition
Plaque erosions with no structural defect (beyond endothelial injury) or gap in the plaque.

# concept[].definition
Stenosis severity classifications of multiple lesions in a vessel.

# concept[].definition
A finding of a previously treated lesion in which stenosis has reoccurred.

# concept[].definition
Loosely packed bundles of collagen fibers with regions of lipid deposition present. Region is cellular and no cholesterol clefts or necrosis are present. Somemacrophage infiltration. Increase in extra cellular matrix.

# concept[].definition
Area within the plaque with very low echogenicity separated from the lumen and surrounded by more echogenic structures (fibrous cap). Highly lipidic necrotic region with remnants of foam cells and dead lymphocytes present. No collagen fibers are visible and mechanical integrity is poor. Cholesterol clefts and micro calcifications are visible.

# concept[].definition
Separation of the layers of an artery involving the adventitia

# concept[].definition
Separation of the layers of an artery involving the intima. Dissection limited to the intima or atheroma, and not extending to the media.

# concept[].definition
Separation of the layers of an artery involving the media. Dissection in the arterial Media, extending into the media.

# concept[].definition
The referenced information was acquired simultaneously with the information in the object in which the reference occurs.

# concept[].definition
Information acquired for the same anatomic region.

# concept[].definition
Information acquired for the same indication.

# concept[].definition
The referenced information was used to correct the data for differential attenuation through different anatomic tissue.

# concept[].definition
Value estimated for a vessel in the absence of a stenosis.

# concept[].display
Left Atrial Ejection Fraction by Angiography

# concept[].definition
Left Atrial Ejection Fraction by Angiography.

# concept[].definition
Contour repositioning of End Diastolic relative to End Systolic contour.

# concept[].definition
The minimum standard deviation to define the hypokinesis and hyperkinesis.

# concept[].definition
Report of differentiation of wall motion compared to normal.

# concept[].definition
Model for cardiac chamber volume calculation.

# concept[].definition
Method to define original diameter of the artery.

# concept[].definition
Relation between calculated End Diastolic volume and ventricular End Diastolic volume. The specific meaning is dependent on volume method used.

# concept[].definition
Correction factor for the calculated End Diastolic volume and ventricular End Diastolic volume. The specific meaning is dependent on volume method used.

# concept[].definition
Relation between calculated End Systolic volume and ventricular End Systolic volume. The specific meaning is dependent on volume method used.

# concept[].definition
Correction factor for the calculated End Systolic volume and ventricular End Systolic volume. The specific meaning is dependent on volume method used.

# concept[].definition
Exponent of volume in regression formula.

# concept[].definition
Container for spatial locations or coordinates used for calculation.

# concept[].definition
Average thickness of the chamber wall in the current view.

# concept[].definition
Volume of the chamber wall estimated from the current view.

# concept[].definition
Method to calculate wall motion [example: Sheehan, 1986].

# concept[].definition
The length between End Diastolic and End Systolic contour perpendicular on the centerline normalized by a method dependent ventricular perimeter length. The centerline is the line equidistant between the End Diastolic and End Systolic contour [example: Sheehan, 1986].

# concept[].definition
The report of the boundaries of the abnormal (hyperkinetic, hypokinetic, a-kinetic) regions associated with the territory of the artery [example: Sheehan, 1986].

# concept[].definition
The chord number specifying the begin of abnormal region [example: Sheehan, 1986].

# concept[].definition
The chord number specifying the end of abnormal region [example: Sheehan, 1986].

# concept[].definition
Severity at the regional abnormality extent [example: Sheehan, 1986].

# concept[].definition
Severity at the opposite regional abnormality extent [example: Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and RAO project the range of chords belonging to this circumferential extent lies between 5 - 85. [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and RAO project the range of chords belonging to this circumferential extent lies between 25 - 85. [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and RAO projection the range of chords belonging to this regional extent lies between 10 - 66 (hypokinetic) and 67 - 80 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and RAO projection the range of chords belonging to this regional extent lies between 51 - 80 (hypokinetic) and 10 - 50 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and RAO projection the range of chords belonging to this regional extent lies between 10 - 58 (hypokinetic) and 59 -80 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and RAO projection the range of chords belonging to this regional extent lies between 59 - 80 (hypokinetic) and 10 - 58 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and LAO projection the range of chords belonging to this regional extent lies between 50 -100 (hypokinetic) and 20 - 49 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and LAO projection the range of chords belonging to this regional extent lies between 19 - 67 (hypokinetic) and 68 - 100 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Based on a total number of chords of 100 and LAO projection the range of chords belonging to this regional extent lies between 38 -74 (hypokinetic) and 75 - 100 (hyperkinetic). [Sheehan, 1986].

# concept[].definition
Method based on assumption that the image object is circular.

# concept[].definition
Method based on the gray value distribution of the image.

# concept[].definition
End Systolic contour realigned to End Diastolic contour based on the center of gravity.

# concept[].definition
End Systolic contour realigned to End Diastolic contour based on the mid point of the long axis. The long axis end points are defined as the posterior and apex.

# concept[].definition
Calculated Vessel Lumen Cross-Sectional Area based on the referenced method.

# concept[].definition
Sphere visible in an image, which is used as a calibration or marker object.

# concept[].definition
Object of interest in isocenter of image and pixel separation is calculated from geometric data.

# concept[].definition
Object of interest not in isocenter of image and pixel separation is calculated from geometric data and out of isocenter distances.

# concept[].definition
Application dependent method to calculate the reference diameter based on the multiple diameter values.

# concept[].definition
Application dependent method to calculate reference by interpolation, based on the diameter of two or more user defined reference positions.

# concept[].definition
Application dependent method to calculate by averaging the reference, based on the diameter of one or more user defined reference positions.

# concept[].definition
Method to calculate wall motion based on the lengths of the radials in the predefined regions [Ingels].

# concept[].display
Regional Contribution to Ejection Fraction

# concept[].definition
Contribution of Region to global Ejection factor based on radial or landmark based wall motion method.

# concept[].definition
The reduction of area between End Systolic and End Diastolic based on radial wall motion analysis.

# concept[].definition
Method to calculate wall motion based on the move of landmarks on the wall [Slager].

# concept[].definition
Contribution to the ejection fraction of a specific slice region [Slager].

# concept[].definition
Method to calculate volumes of heart chambers for every image in a range.

# concept[].definition
The area is derived by considering a set of coordinates as a closed irregular polygon, accounting for inner angles.The exact method, such as by decomposition into triangles or quadrilaterals, is not specified, since it does not affect the numeric result, apart from the effect of numeric precision during computation of intermediate results.

# concept[].definition
The area is derived by using a set of coordinates as control points for a Non Uniform Rational B-Spline (NURBS).

# concept[].display
Integration of sum of closed areas on contiguous slices method for volume

# concept[].definition
Method of integrating the sum of the areas on adjacent slices across the slice interval to derive a total volume; each area is defined by a regular planar shape or by considering a set of coordinates as a closed irregular polygon, accounting for inner angles.

# concept[].definition
Procedure used to calibrate measurements or measurement devices.

# concept[].definition
Left contour of lumen (direction proximal to distal).

# concept[].definition
Right contour of lumen (direction proximal to distal).

# concept[].definition
Ordered set of diameters values derived from contours (direction proximal to distal).

# concept[].definition
Increment value along X-axis in Diameter Graph.

# concept[].definition
Location of the maximum lumen area in a lesion or vessel.

# concept[].display
Densitometric Luminal Cross-sectional Area Graph

# concept[].definition
Ordered set of cross-sectional Vessel Lumen Cross-Sectional Area values derived from contours (direction proximal to distal) based on densitometric method.

# concept[].definition
Position of proximal border of segment relative to the contour start (proximal end of analysis area).

# concept[].definition
Position of distal border of segment relative to the contour start (proximal end of analysis area).

# concept[].definition
Longitudinal cross sectional area of plaque.

# concept[].definition
Symmetry of stenosis (0 = complete asymmetry, 1 = complete symmetry).

# concept[].definition
Symmetry of plaque (0 = complete asymmetry, 1 = complete symmetry).

# concept[].definition
The average slope of the diameter function between the position of the minimum luminal diameter and the position of the proximal border of the segment.

# concept[].definition
The average slope of the diameter function between the position of the minimum luminal diameter and the position of the distal border of the segment.

# concept[].definition
The relation between coronary pressure and coronary flow.

# concept[].definition
Poiseuille Resistance at the location of the stenosis.

# concept[].definition
Turbulence Resistance at the location of the stenosis.

# concept[].definition
Pressure drop over the stenosis at maximum heart output.

# concept[].definition
Method for selection of vessel sub-segments.

# concept[].definition
Estimate of the volume of blood flow in the absence of stenosis.

# concept[].definition
Area Length method defined by Kennedy [Kennedy, 1970].

# concept[].definition
Area Length method defined by Dodge [Dodge, 1960].

# concept[].definition
Area Length method defined by Wynne [Wynne].

# concept[].definition
Volume method defined by Ferlinz [Ferlinz].

# concept[].definition
Volume method defined by Graham [Graham].

# concept[].definition
Volume method defined by Arcilla [Arcilla].

# concept[].definition
Corrected Body Surface area for indexing the hemodynamic measurements for a pediatric patient.

# concept[].definition
Method for selecting sub-segments that are all of the same length.

# concept[].definition
Manually selected start and end of sub-segment.

# concept[].definition
Report of a Cardiovascular Analysis, typically from a CT or MR study.

# concept[].display
Absolute Values Of Ventricular Measurements

# concept[].definition
Section Heading for absolute values of ventricular measurements.

# concept[].display
Normalized Values Of Ventricular Measurements

# concept[].definition
Results of normalizing ventricular measurements.

# concept[].definition
Central breathing position between inspiration and expiration.

# concept[].definition
Time of the peak of ventricular ejection.

# concept[].definition
Time interval until time of peak filling from a given reference point.

# concept[].definition
Papillary muscle was excluded from the measurement.

# concept[].definition
Papillary muscle was included in the measurement.

# concept[].display
Wall Thickness Ratio end-systolic to end-diastolic

# concept[].definition
The ratio of the end-systolic wall thickness compared to the end-diastolic wall thickness.

# concept[].definition
The method to smooth a ventricular volume as a function of time.

# concept[].definition
Baseline correction used in the calculation of the results.

# concept[].definition
The time in a dynamic set of images at which the first peak of the signal is observed for the analyzed myocardial wall segments.

# concept[].definition
This is the time at which the signal begins to increase.

# concept[].definition
Time interval between the beginning of the signal increase to the time at which the signal intensity reaches its first maximum in a dynamic set of images.

# concept[].definition
Signal intensity as a function of time. It is the change in the signal intensity divided by the change in the time.

# concept[].definition
MR perfusion time integral from baseline (foot time) to earliest peak.

# concept[].definition
First time point in a dynamic set of images used in the calculation of the baseline signal intensity for each myocardial wall segment.

# concept[].definition
Last time point in a dynamic set of images used in the calculation of the baseline signal intensity for each myocardial wall segment.

# concept[].definition
The time delta between images in a dynamic set of images.

# concept[].definition
The minimum velocity encoded by the phase encoding gradient.

# concept[].definition
The maximum velocity encoded by the phase encoding gradient.

# concept[].definition
Area Based Method for estimating volume or area.

# concept[].definition
Diameter Based Method for estimating volume, area or diameter.

# concept[].definition
Volume Based Method for estimating volume.

# concept[].definition
A method of diameter measurements according to NASCET (North American Symptomatic Carotid Endarterectomy Trial).

# concept[].definition
A method of diameter measurements according to ECST (European Carotid Surgery Trial).

# concept[].definition
Delayed hyperenhancement of a tissue observed in an image acquired after injection of contrast media.

# concept[].display
Time interval since injection of contrast media

# concept[].definition
Time interval since injection of contrast media.

# concept[].display
Blood velocity vs. time of cardiac cycle

# concept[].definition
Relationship between blood velocity and time relative to R-wave peak.

# concept[].display
Time interval since detection of contrast bolus

# concept[].definition
Time interval since detection of contrast bolus.

# concept[].definition
Indicates if the papillary muscle was included or excluded in the measurement.

# concept[].definition
Persistent flow of blood into the stent-grafting.

# concept[].definition
Finding about the characteristics of the parent vessel of a vessel.

# concept[].definition
Site of Maximal lumen diameter of a vessel.

# concept[].definition
The physical domain (time, space, etc.) to the horizontal axis of the graphical presentation.

# concept[].definition
The physical domain (time, space, etc.) to the vertical axis of the graphical presentation.

# concept[].definition
Reference time for measurement of elapsed time in a procedure.

# concept[].definition
Number of ectopic beats during a period of collection.

# concept[].definition
Heart rate times systolic blood pressure.

# concept[].display
Exercise duration after stress agent injection

# concept[].definition
Exercise duration after stress agent injection.

# concept[].definition
Maximum power output achieved during course of procedure.

# concept[].definition
Peak physical activity intensity measurement during course of procedure.

# concept[].definition
Peak Double Product measurement during course of procedure.

# concept[].definition
Attenuation correction not based on image-based attenuation maps.

# concept[].definition
Bazett QT Correction Algorithm; QT/(RR ^ 0.5); Bazett HC. "An analysis of the time-relations of electrocardiograms" Heart7:353-370 (1920).

# concept[].definition
Hodges QT Correction Algorithm; QT + 1.75 (heart rate-60); Hodges M, Salerno Q, Erlien D. "Bazett's QT correction reviewed. Evidence that a linear QT correction for heart rate is better." J Am Coll Cardiol1:694 (1983).

# concept[].definition
Fridericia QT Correction Algorithm; QT/(RR ^ 0.333); Fridericia LS. "The duration of systole in the electrocardiogram of normal subjects and of patients with heart disease" Acta Med Scand53:469-486 (1920).

# concept[].definition
Framingham QT Correction Algorithm; QT + 0.154 (1- RR); Sagie A, Larson MG, Goldberg RJ, et al. "An improved method for adjusting the QT interval for heart rate (the Framingham Heart Study)." Am J Cardiol70:797-801(1992).

# concept[].definition
Borg Rating of Perceived Exertion Scale, range 6:20.

# concept[].definition
Borg category ratio scale, open ended range with nominal range 0:10.

# concept[].definition
Quality of a study for the purpose for which it was created.

# concept[].definition
Quality of an image is excellent for the purpose for which it was created.

# concept[].definition
Quality of an image is good for the purpose for which it was created.

# concept[].definition
Quality of an image is poor for the purpose for which it was created.

# concept[].definition
Image attenuation due to body physique (overweight).

# concept[].definition
ECG is non-diagnostic due to low heart rate.

# concept[].display
Non-diagnostic - resting ST abnormalities

# concept[].definition
ECG is non-diagnostic due to resting ST abnormalities.

# concept[].display
Non-diagnostic - ventricular pacing or LBBB

# concept[].definition
ECG is non-diagnostic due to ventricular pacing or Left Bundle Branch Block.

# concept[].definition
ECG is non-diagnostic for presence of acute coronary syndrome.

# concept[].definition
Strongly positive finding - ST elevation.

# concept[].definition
Finding of ST segment depression with no slope.

# concept[].definition
Finding of ST segment depression with upslope.

# concept[].definition
Finding of ST segment depression with downslope.

# concept[].definition
Difference in End Diastolic Left Ventricular Volume.

# concept[].display
Ratio of achieved to predicted maximal oxygen consumption

# concept[].definition
Ratio of achieved to predicted maximal oxygen consumption.

# concept[].display
Ratio of achieved to predicted functional capacity

# concept[].definition
Ratio of achieved to predicted functional capacity.

# concept[].definition
Workload (Watts) at target heart rate divided by body weight.

# concept[].definition
ST depression at peak exercise divided by the exercise-induced increase in heart rate [Kligfield P, Ameisen O, Okin PM. "Heart rate adjustment of ST segment depression for improved detection of coronary artery disease." Circulation 1989;79:245-55.].

# concept[].definition
Nuclear Medicine Rest thallium/stress technetium procedure.

# concept[].display
Rest technetium/stress technetium 1 day procedure

# concept[].definition
Nuclear Medicine Rest technetium/stress technetium 1 day procedure.

# concept[].display
Rest technetium/stress technetium 2 day procedure

# concept[].definition
Nuclear Medicine Rest technetium/stress technetium 2 day procedure.

# concept[].display
Stress technetium/rest technetium 1 day procedure

# concept[].definition
Nuclear Medicine Stress technetium/rest technetium 1 day procedure.

# concept[].definition
Nuclear Medicine Myocardial Viability procedure.

# concept[].definition
Positron Emission Tomography Perfusion Imaging procedure, rest only.

# concept[].definition
Positron Emission Tomography Perfusion Imaging procedure, stress only.

# concept[].display
PET Myocardial Perfusion, Rest and Stress

# concept[].definition
Positron Emission Tomography Perfusion Imaging procedure, rest and stress.

# concept[].definition
Positron Emission Tomography Myocardial Viability procedure, rest only.

# concept[].definition
Positron Emission Tomography Myocardial Viability procedure, stress only.

# concept[].display
PET Myocardial Viability, Rest and Stress

# concept[].definition
Positron Emission Tomography Myocardial Viability procedure, rest and stress.

# concept[].definition
Group of symptoms heralding angina pectoris that does not include chest pain (dyspnea, diaphoresis, profuse vomiting in a diabetic patient, or arm or jaw pain).

# concept[].definition
Active ingredient (molecular) used for radioactive tracing.

# concept[].definition
DateTime of radiopharmaceutical administration to the patient for imaging purposes.

# concept[].definition
Ending DateTime of radiopharmaceutical administration to the patient for imaging purposes.

# concept[].definition
Volume of radiopharmaceutical administered to the patient.

# concept[].definition
Total amount of radionuclide administered to the patient at Radiopharmaceutical Start Time.

# concept[].definition
Activity per unit mass of the radiopharmaceutical at Radiopharmaceutical Start Time.

# concept[].definition
Pre-injection syringe acquisition count rate.

# concept[].definition
Syringe acquisition count rate following patient injection.

# concept[].definition
Medication to be administered at the beginning of the Scheduled Procedure Step.

# concept[].definition
Direction of imaging (includes view, transducer orientation, patient orientation, and/or projection).

# concept[].definition
Imaging condition for refinement of protocol (includes secondary posture, instruction, X-Ray / electron beam energy or nuclide, and ultrasound modes), as used in JJ1017 v3.0.

# concept[].display
Caudal 10 degree distal-cranioproximal oblique

# concept[].definition
Caudal 10 degree distal-cranioproximal oblique radiographic projection, defined per Smallwood et al.

# concept[].definition
Surface processing utilizing predefined weighting factors (i.e., kernels) applied to different data values depending on their location relative to other data values within the data domain. Includes Low Pass, High Pass, Gaussian, Laplacian, etc.

# concept[].definition
Surface processing applied non-uniformly utilizing a priori knowledge of the system and/or relative locations of the data values within the data domain. Example: Neighborhood analysis where weighting factors are modified continuously based on predefined criteria.

# concept[].definition
Surface processing through the exploitation of discontinuities in the data values within their domain. Includes Gradient filters.

# concept[].definition
Surface processing based on the connectivity of values based on the shape or structure of the data values within their domain. Includes erode, dilate, etc.

# concept[].definition
Surface processing applied to the distribution of the data values. Includes thresholding, Bayesian Classification, etc.

# concept[].definition
Surface processing accomplished through varying the data domain size. Include deformable models.

# concept[].definition
Surface processing accomplished by combining data values based on their relative location within their domain or value distribution. Includes K- and C-means, Fuzzy Analysis, Watershed, Seed Growing, etc.

# concept[].definition
Surface processing accomplished through the weighted combination of multiple sets of data. Includes Principle Component Analysis, linear and non-linear weighed combinations, etc.

# concept[].definition
Surface processing accomplished through human interaction. Region drawing.

# concept[].definition
Surface processing using Artificial Intelligence techniques, such as Machine Learning, Neural Networks, etc.

# concept[].definition
Surface processing using Deformable Model techniques, such as Point Distribution Models, Level Sets, Simplex Meshes, etc.

# concept[].definition
Document Title of OB-GYN procedure report.

# concept[].definition
Report section for assessment of fetal growth using ratios and indexes.

# concept[].definition
Report section for assessment of fetal growth.

# concept[].definition
Report section for assessment of fetal growth by long bone measurements.

# concept[].definition
Report section for assessment of fetal cranium growth.

# concept[].definition
Report section for assessment of biophysical observations that evaluate fetal well-being according to Manning, Antepartum Fetal Evaluation: Development of a Fetal Biophysical Profile Score, Am. J Obstet Gynecol, 1980;136:787.

# concept[].definition
A grouping of related measurements and calculations that share a common context.

# concept[].definition
Report section for fetus specific procedure summary observations.

# concept[].definition
Report section for assessment of early gestation fetus.

# concept[].definition
A name to differentiate between multiple instances of some item.

# concept[].definition
Report section for assessment of pelvis and uterus.

# concept[].definition
The rank of a measured growth indicator relative to a normal distribution expressed as a percentage.

# concept[].definition
The rank of a measured growth indicator relative to a normal distribution expressed as the dimensionless quantity z = (x-m) /s where (x-m) is the deviation of the value x, from the distribution mean, m, and s is the standard deviation of the distribution.

# concept[].definition
Fetus characteristics (findings section title).

# concept[].definition
Fetal Measurements (findings section title).

# concept[].definition
There is a defined equivalence between the Frame of Reference of the Registration SOP instance and the Frame of Reference of the referenced images.

# concept[].definition
The registration is based on fiducials that represent patient or specimen features identified in each set of data.

# concept[].definition
Registration based on a-priori knowledge of the acquisition geometry. This is not an object registration as in fiducial registration. Rather, it specifies a known spatial relationship.

# concept[].definition
Computed registration based on global image information.

# concept[].definition
Registration by visually guided manipulation.

# concept[].display
Image Content and Fiducial Based Alignment

# concept[].definition
The registration is based on fiducials that represent patient or specimen features identified in each data set in combination with global image information.

# concept[].definition
Values are derived by sampling data from a Source Image into a Registered Reference Coordinate System based on a Deformable Spatial Registration Instance.

# concept[].definition
Deformable Spatial Registration Instance used for image deformation.

# concept[].definition
A plane fiducial that specifies the location of the plane separating the two hemispheres of the brain.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the anterior limit of the right brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the posterior limit of the right brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the superior limit of the right brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the inferior limit of the Right brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the anterior limit of the left brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the posterior limit of the left brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the superior limit of the left brain hemisphere.

# concept[].definition
A point fiducial that specifies the location in the plane perpendicular to the Anterior- Posterior-Commissure axis and tangential to the inferior limit of the left brain hemisphere.

# concept[].definition
A segment for use as an input to an image registration process.

# concept[].definition
Root Document Title for ultrasound vascular evidence reports (worksheets).

# concept[].definition
The particular vessel branch, such as the inferior, medial or lateral.

# concept[].definition
A descriptor or elaboration of the type of graft.

# concept[].definition
A modifier to a 2D distance measurement to describe its orientation.

# concept[].definition
The angle formed between the Doppler beam line and the direction of blood flow within a region of interest in the body defined by the sample volume.

# concept[].definition
The depth of the center of the Doppler sample volume measured from skin line along the Doppler line.

# concept[].definition
Pediatric Cardiac Ultrasound Report (document title).

# concept[].definition
Fetal Cardiac Ultrasound Report (document title).

# concept[].display
Adult Congenital Cardiac Ultrasound Report

# concept[].definition
Adult Congenital Cardiac Ultrasound Report (document title).

# concept[].definition
Document title of adult echocardiography procedure (evidence) report.

# concept[].definition
An image that is a pictorial representation of findings. The concept is typically used as a purpose of reference to an image, such as a depiction of myocardium segments depicting wall motion function.

# concept[].definition
The average of all scored (non-zero) Left Ventricle segment wall motion scores.

# concept[].definition
A type of clinical acquisition protocol for creating images or image-derived measurements. Acquisition protocols may be specific to a manufacturer's product.

# concept[].definition
Method for calculating left ventricular volume from two orthogonal views containing the true long axis (usually the apical 4 and 2 chamber views). Volume = [pL1 / 6] * [(4A1) ¸ (pL1) ] * [(4A2) ¸ (pL2) ].

# concept[].definition
Method for calculating left ventricular volume from a view containing the true long axis (usually the apical 4-chamber view). Volume = [8(A)2]¸[3pL].

# concept[].definition
Method (formula) for calculating left ventricle volumes and function derivatives (EF, SV, SI, etc.) that estimates the volume as the cube of diameter.

# concept[].definition
Method of calculating volume based on the summation of disk volumes. The disk axis is parallel to the left ventricular long axis and using a disk diameter averaged from the two chamber and four chamber views.

# concept[].definition
Method of calculating volume based on the summation of disk volumes. The disk axis is parallel to the left ventricular long axis with disk diameter taken from the four-chamber view.

# concept[].definition
Method (formula) for calculating left ventricle volumes and function derivatives (EF, SV, SI, etc.) Volume = [7.0/(2.4+D) ]*D3.

# concept[].definition
Mitral valve area (cm2) by Pressure Half-time = 220 (cm2.ms) / PHT (ms).

# concept[].definition
Area = P/4 X d1 X d2d1 = anterior/posterior axisd2 = medial/lateral axisHagen-Ansert, Sandra L., Textbook of Diagnostic Ultrasound, ed. 3, The C.V.Mosby Co., 1989, p. 73. .

# concept[].definition
For conduits in series ("in continuity"), volume flow is equal: A1*V1 = A2*V2. where V is the velocity.

# concept[].definition
For conduits in series ("in continuity"), volume flow is equal: A1*V1 = A2*V2. where V is the mean velocity.

# concept[].definition
For conduits in series ("in continuity"), volume flow is equal: A1*V1 = A2*V2. where V is the peak velocity.

# concept[].display
Continuity Equation by Velocity Time Integral

# concept[].definition
For conduits in series ("in continuity"), volume flow is equal: A1*V1 = A2*V2. where V is the velocity time integral.

# concept[].definition
Utilizes aliasing velocity (by color Doppler) of flow into an orifice (often regurgitant or stenotic) to measure instantaneous flow rate, orifice area, and flow volume.The instantaneous flow rate = (2πr2vav) * (απ) where vav is the constant velocity known as aliasing velocity at radius r, vpis the peak velocity at the orifice, and α is the angle in radians of the constant velocity surface.Estimated Orifice area = Flow rate / vp, where vp is the peak velocity at the orifice and the flow rate is the PISA peak flow rate.The volume flow is then the product of the orifice area and Velocity Time Integral.

# concept[].definition
Volume flow = Conduit CSA * (Velocity Time Integral).

# concept[].definition
Direct measurement of an area by tracing an irregular perimeter.

# concept[].definition
Mass = 1.04 * [(ST+LVID+PWT)3 - LVID3] * 0.8+ 0.6. Mass unit is grams and length in cm.

# concept[].display
Left Ventricle Mass by Truncated Ellipse

# concept[].definition
Mass = 1.05P ((b + t)2 X (2/3 (a + t) + d - d3 /3(a + t)2) - b2 (2/3a + d - d3 /3a2))a = Semi-major axis from widest minor axis radius to apex.b = Short axis radius calculated from short axis cavity areat = Myocardial thickness calculated from short axis epicardial and cavity areasd = Truncated semi-major axis from widest short axis diameter to plane of mitral annulus.Mass unit is grams and length in cm.Schiller NB et al: Recommendations for quantification of the left ventricle by two-dimensional echocardiography, American Society of Echocardiography 2:364, 1989. .

# concept[].definition
A four point, echocardiographic numeric scoring scheme of myocardium segments based on evaluation of wall motion and ventricle morphology. Recommendations for Quantitation of the Left Ventricle by Two-Dimensional Echocardiography, Journal of the American Society of Echocardiography, 2:358-367, 1989.

# concept[].definition
A five point, echocardiographic numeric scoring scheme of myocardium segments based on evaluation of wall motion and ventricle morphology. Recommendations for Quantitation of the Left Ventricle by Two-Dimensional Echocardiography, Journal of the American Society of Echocardiography, 2:358-367, 1989.

# concept[].display
5 Point Segment Finding Scale With Graded Hypokinesis

# concept[].definition
A five point, echocardiographic numeric scoring scheme of myocardium segments based on evaluation of wall motion and ventricle morphology, with severity of hypokinesis graded. Recommendations for Quantitation of the Left Ventricle by Two-Dimensional Echocardiography, Journal of the American Society of Echocardiography, 2:358-367, 1989.

# concept[].definition
Method of estimating volume from a planar ellipse. Equivalent to Biplane Ellipse with an assumption that the ellipse in the orthogonal plane has identical major and minor diameters.

# concept[].definition
Modified Simpson's Method of estimating ventricular volume, based on the method of disks with paired apical views.Schiller NB, et al. "Recommendations for quantitation of the left ventricle by two-dimensional echocardiography. American Society of Echocardiography Committee on Standards, Subcommittee on Quantitation of Two-Dimensional Echocardiograms". J Am Soc Echocardiogr.1989 2(5):358-367. Sep-Oct.

# concept[].definition
Bullet method of estimating ventricular volume.Volume = 5/6 * L * SL: Left ventricle long axis lengthS: Left ventricle area, SAX view at level of Mitral Valve.

# concept[].definition
Color coded ultrasound images of blood flow, which depict the amplitude, or power, of Doppler signals.

# concept[].definition
Onset of administration of dose of a drug.

# concept[].definition
Destruction of ultrasonic contrast microbubbles by a high-energy ultrasound pulse.

# concept[].definition
Ultrasound transducer scan pattern in which information is gathered along a line.

# concept[].definition
Ultrasound transducer scan pattern in which information is gathered within a plane.

# concept[].definition
Ultrasound transducer scan pattern in which information is gathered within a volume.

# concept[].definition
Ultrasound transducer geometry characterized by a single scan line used for PW or CW Doppler scanning.

# concept[].definition
Ultrasonic transducer geometry characterized by parallel lines.

# concept[].display
Curved linear ultrasound transducer geometry

# concept[].definition
Ultrasonic transducer geometry characterized by radial lines normal to the outside of a curved surface.

# concept[].definition
Ultrasonic transducer geometry characterized by lines originating from a common apex.

# concept[].definition
Ultrasonic transducer geometry characterized by lines emanating radially from a single point.

# concept[].definition
Ultrasonic transducer geometry characterized by a circular ring of transducer elements.

# concept[].definition
Ultrasonic steering technique consisting of a single beam normal to the transducer face steered by the orientation of the probe.

# concept[].definition
Ultrasonic steering technique consisting of mechanically directing the beam.

# concept[].definition
Transducer is designed to be placed onto the surface of the subject.

# concept[].definition
Transducer is designed for insertion into the esophagus.

# concept[].definition
Transducer is designed for insertion into the vagina.

# concept[].definition
Transducer is designed for insertion into the rectum.

# concept[].definition
Transducer is designed for insertion into the subject via a catheter.

# concept[].definition
Transducer is designed for insertion into either the vaginal cavity or the rectal cavity.

# concept[].definition
Transducer is designed for insertion into the subject via an incision.

# concept[].definition
method to measure the mass of the Left Ventricle via the ASE area-length method at end diastole.LV Mass = 1.05*(5/6*(A1*(L+t)) - 5/6*(A2*L))A1 = Left Ventricle epicardial SAX area at the level of the papillary muscle tips at end diastole.A2 = Left Ventricle endocardial SAX area cavity area at the level of the papillary muscle tips at end diastole.L = Left Ventricle apical view long axis length at end diastole.t = Myocardial thickness can be computed as:t = sqrt (A1/3.14) - sqrt (A2/3.14)Reference:1) Schiller, N.B., et al. "Recommendations for Quantification of the LV by Two-dimensional Echocardiography." J Am Soc Echo, Vol. 2, No. 5: 358-367, Sep-Oct 1989.2) Reichek, N., et al. "Anatomic Validation of Left Ventricular Mass Estimates from Clinical Two-dimensional Echocardiography: Initial Results." Circulation, Vol. 67, No. 2: 348-52, February 1983.

# concept[].display
Left Ventricle Mass by M-mode - adjusted by Height

# concept[].definition
Equation = Left Ventricle Mass by M-mode (in gram) / (Height (in meter)) ^2.7Reference:Giovanni De Simone, et al. "Effect of Growth on Variability of Left Ventricular Mass: Assessment of Allometric Signals in Adults and Children and Their Capacity to Predict Cardiovascular Risk". New York, New York and Cincinnati, Ohio.

# concept[].display
Left Ventricle Mass by Truncated Ellipse - adjusted by Height

# concept[].definition
Equation = Left Ventricle Mass by Truncated Ellipse / Height^2.7Reference:Giovanni De Simone, et al. "Effect of Growth on Variability of Left Ventricular Mass: Assessment of Allometric Signals in Adults and Children and Their Capacity to Predict Cardiovascular Risk". New York, New York and Cincinnati, Ohio.

# concept[].display
Left Ventricle Mass by Area Length - adjusted by Height

# concept[].definition
Equation = Left Ventricle Mass by Area Length / Height^2.7Reference:Giovanni De Simone, et al. "Effect of Growth on Variability of Left Ventricular Mass: Assessment of Allometric Signals in Adults and Children and Their Capacity to Predict Cardiovascular Risk". New York, New York and Cincinnati, Ohio.

# concept[].definition
Measurements that are described by a single pre-coordinated code.

# concept[].definition
Measurements that are described by a collection of (generally atomic) post-coordinated codes.

# concept[].definition
Measurements taken in an ad hoc fashion without any coordinated semantics.

# concept[].definition
The source system of the measurement does not maintain a persistent pre-coordinated code by which different instances of the measurement can be associated and tracked over multiple procedures.

# concept[].definition
The type of observation made at the finding site, e.g., whether it is an observation of the structure of the finding site, an observation of the behavior of the finding site, or an observation of the blood flow at the finding site.

# concept[].definition
The type of derivation used to obtain the measurement value. E.g. whether it is taken directly, formed as a ratio, normalized against an index, or calculated using a more elaborate equation.

# concept[].definition
The property that is being measured.Examples include mass, diameter, peak blood velocity.

# concept[].definition
The measurement which is the denominator of a measurement that is divided. This applies to measurements such as ratios or indexed values.

# concept[].definition
A brief label, suitable for display on a screen or report. (Not suitable for matching).

# concept[].definition
Measurements that need to be associated with a specific stage in a procedure or acquisition protocol.

# concept[].definition
The subject of a measurement is the physical structure of the Finding Site, such as the mass or diameter.

# concept[].definition
The subject of a measurement is the behavior of the Finding Site, such as the velocity or duration of motion.

# concept[].definition
The measurement has been normalized by dividing it by an index value (such as Body Surface Area).

# concept[].definition
The measurement is a change value expressed as a fraction of its baseline value. E.g. cardiac ejection fraction or fractional shortening.

# concept[].definition
The measurement is calculated by incorporating one or more measured values into an equation other than a ratio, fractional change or indexed calculation.

# concept[].definition
The measurement is a direct output of the measurement tool.

# concept[].definition
The distal portion (at the Pulmonic Valve) of the Right Ventricle Outflow Tract.

# concept[].definition
The proximal portion (subvalvular) of the Right Ventricle Outflow Tract.

# concept[].definition
The anterior wall of the right ventricle of the heart.

# concept[].definition
The period of time between the onset of muscle activation and the onset of force or motion.

# concept[].definition
The period between onset of ventricular contraction and the beginning of antegrade blood flow out of the ventricle.

# concept[].definition
The period of retrograde flow into the pulmonary vein during atrial contraction.

# concept[].definition
The period of the entire cardiac cycle. E.g. from End Systole of one heartbeat to End Systole of the next heartbeat.

# concept[].definition
The standard deviation over 12 left ventricle myocardial segments of the time to peak myocardial sustained systolic velocity of each segment.See Yu, et al., Circulation, 2002; 105: 438-445

# concept[].definition
The effective area of an orifice (such as the mitral valve orifice) during bloodflow through the orifice.

# concept[].definition
The distance traversed by some tissue over a defined period.

# concept[].definition
The maximum area of an orifice opening over a defined period.

# concept[].definition
The peak pressure of blood over a defined period at a defined location.

# concept[].definition
The peak velocity of some tissue over a defined period

# concept[].definition
The radius of the proximal isovelocity surface area (PISA) of fluid flow approaching an orifice. It is commonly used to evaluate cardiac valve regurgitation.

# concept[].definition
A cross-sectional area of a regurgitation jet, taken perpendicular to the primary flow.

# concept[].definition
A width of a regurgitation jet taken perpendicular to the primary flow.

# concept[].definition
The width of the vena contracta of a fluid flow.

# concept[].definition
CARDIOsphere™ ultrasonic contrast agent produced by POINT Biomedical.

# concept[].definition
Echovist® ultrasonic contrast agent produced by Schering AG.

# concept[].definition
Imagify™ ultrasonic contrast agent produced by Accusphere Inc.

# concept[].definition
Levovist® ultrasonic contrast agent produced by Schering AG.

# concept[].definition
Sonazoid™ ultrasonic contrast agent produced by Daiichi Pharmaceutical / General Electric.

# concept[].definition
SonoVue™ ultrasonic contrast agent produced by Bracco Diagnostics.

# concept[].definition
Targestar™-B ultrasonic contrast agent produced by Targeson LLC.

# concept[].definition
Targestar™-P ultrasonic contrast agent produced by Targeson LLC.

# concept[].definition
A structured report containing the quantitative results of human or machine analysis of images.

# concept[].definition
A structured report containing the quantitative results of human or machine analysis of images for oncology evaluation.

# concept[].definition
A structured report containing the quantitative results of human or machine analysis of DCE-MR.

# concept[].definition
A structured report containing the quantitative results of human or machine analysis of PET images.

# concept[].definition
Measurements derived from measurements made on images.

# concept[].definition
An MRI procedure in which multiple parameters including diffusion, dynamic contrast and T2 are measured.

# concept[].definition
An MRI procedure of the prostate in which multiple parameters including diffusion, dynamic contrast and T2 are measured.

# concept[].definition
An MRI procedure of the whole body in which multiple parameters including diffusion, dynamic contrast and T2 are measured.

# concept[].definition
Method of calculation of the volume of an ellipsoid as length * width * height * π / 6.

# concept[].display
Sum of segmented voxel method for volume

# concept[].definition
Method of summing the volumes of all the voxels (and partial voxels if the segment contains partially occupied voxels) included in the segment to derive a total volume.

# concept[].definition
Maximum average gray value that is calculated from a 1 cubic centimeter sphere placed within the region of interest.See Wahl RL, Jacene H, Kasamon Y, Lodge MA. From RECIST to PERCIST: Evolving Considerations for PET Response Criteria in Solid Tumors. Journal of Nuclear Medicine. 2009;50(Suppl 1):122S - 150S.

# concept[].definition
The volume of a lesion (e.g., a tumor) ascertained through information about its metabolic activity (e.g., SUV on PET).Abbreviated "MV". Synonymous with Metabolic Tumor Volume (MTV).

# concept[].definition
The total activity of a lesion obtained as the product of its volume and its glycolytic activity (on FDG-PET).The volume may be defined on the same modality (e.g., the MV on FDG-PET by some thresholding or other technique) or on another spatially registered modality (e.g., the lesion outline segmented on CT or MR).Does not apply to other radiopharmaceuticals than those involved in glucose metabolism.Abbreviated TLG. Synonymnous with "Tumor Lesion Glycolysis".

# concept[].definition
The amount glycolytic activity summed across all voxels in a defined region or within a defined range of SUV (on FDG-PET).

# concept[].definition
The total activity of a lesion obtained as the product of its volume and its proliferative activity (on FLT-PET).The volume may be defined on the same modality (e.g., the MV on FDG-PET by some thresholding or other technique) or on another spatially registered modality (e.g., the lesion outline segmented on CT or MR).Does not apply to other radiopharmaceuticals than those involved in cellular proliferation.Abbreviated TLP. Synonymnous with "Tumor Lesion Proliferation".

# concept[].definition
The amount proliferative activity summed across all voxels in a defined region or within a defined range of SUV (on FLT-PET).

# concept[].definition
A background-corrected, partial volume independent version of TLG.SAM is calculated by drawing a volume of interest (VOI1) around the tumour and a larger VOI (VOI2) around VOI1. Subtracting the background activity in VOI2-VOI1 from VOI1 yields SAM.See Mertens et al. "Standardized added metabolic activity (SAM): a partial volume independent marker of total lesion glycolysis in liver metastases". Eur J Nucl Med Mol Imaging (2012) 39:1441-1448.

# concept[].display
Standardized Added Metabolic Activity Background

# concept[].definition
The background value (VOI2-VOI1) used to calculate Standardized Added Metabolic Activity (SAM).SAM is calculated by drawing a volume of interest (VOI1) around the tumour and a larger VOI (VOI2) around VOI1. Subtracting the background activity in VOI2-VOI1 from VOI1 yields SAM.See Mertens et al. "Standardized added metabolic activity (SAM): a partial volume independent marker of total lesion glycolysis in liver metastases". Eur J Nucl Med Mol Imaging (2012) 39:1441-1448.

# concept[].definition
The ratio of the SUV within a tumor to the SUV of a pre-defined background region.A more general concept than Tumor to Background Ratio (TBR).

# concept[].display
Background for Lesion to Background SUV Ratio

# concept[].definition
The SUV of a pre-defined background region used to compute Lesion to Background SUV Ratio.

# concept[].definition
A statistical index of complexity comparing how detail in a fractal pattern changes with the scale at which it is measured; a ratio of the change in detail to the change in scale.

# concept[].definition
Measure of the asymmetry of the probability distribution of a real-valued random variable about its mean.

# concept[].definition
Measure of the peakedness of the probability distribution of a real-valued random variable.

# concept[].definition
The zero order entropy of a Gray Level Co-occurrence Matrix (GLCM). A measure of disorder. Abbreviated ENT.See Fcm.joint.entr in .

# concept[].definition
The square root of the Angular Second Moment (ASM) of a Gray Level Co-occurrence Matrix (GLCM). A measure of orderliness.See .

# concept[].definition
The Inverse Difference Moment (homogeneity) of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated IDM.See Fcm.inv.diff.mom in .

# concept[].definition
The sum of squares of a Gray Level Co-occurrence Matrix (GLCM). A measure of gray level variations. Abbreviated CON.See Fcm.contrast in .

# concept[].definition
The dissimilarity of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated DIS.See Fcm.dissimilarity in .

# concept[].definition
The Angular Second Moment of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated ASM.See Fcm.energy in .

# concept[].definition
A measure of the linear dependency of gray levels on those of neighbouring pixels of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated COR.See Fcm.corr in .

# concept[].definition
A tabulation of how often different combinations of pixel values (gray levels) occur in an image. Abbreviated GLCM.See .

# concept[].definition
An identifier of a specific time point in a continuum, which is unique within an appropriate local context (such as an entire organization, system or treatment protocol), which identifies the time point for a specific patient.

# concept[].definition
An identifier of a specific time point in a continuum, which is unique within an appropriate local context (such as an entire organization, system or treatment protocol), which identifies the time point "slot" within a treatment protocol using the same value for all patients in the protocol.

# concept[].definition
A pre-defined type of a specific time point in a continuum.

# concept[].definition
A number indicating the order of a time point relative to other time points in the same continuum.

# concept[].definition
The time after the treatment of interest.

# concept[].definition
For the purpose of determining eligibility for a protocol.

# concept[].definition
Response Evaluation Criteria in Solid Tumors version 1.0. See [RECIST] in Normative References.

# concept[].definition
Response Evaluation Criteria in Solid Tumors Version 1.1. See Eisenhauer et al. "New Response Evaluation Criteria in Solid Tumours: Revised RECIST Guideline (version 1.1)." European Journal of Cancer 45, no. 2 (n.d.): 228-47. doi:10.1016/j.ejca.2008.10.026.

# concept[].display
Real World Value Map used for measurement

# concept[].definition
A reference to the Real World Value Map applied to the stored image pixel values before their use for a measurement

# concept[].definition
A container that groups common information about a set of images used as evidence to produce a report.

# concept[].definition
The date the acquisition of data started

# concept[].definition
The time the acquisition of data started

# concept[].definition
The time between the start of injection of the PET radionuclide and the start of acquisition of the PET data.

# concept[].definition
Coefficient of determination, R2. An indication of goodness of fit.

# concept[].definition
Durbin-Watson statistic for detecting serial correlation in residuals.See .

# concept[].definition
Akaike information criterion. A measure of the balance between goodness of fit and number of free parameters.See Akaike H. A new look at the statistical model identification. IEEE Transactions on Automatic Control. 1974 Dec;19(6):716-23. .

# concept[].definition
Bayesian information criterion. A measure of the balance between goodness of fit and model complexity.See .

# concept[].display
Perfusion analysis by Stable Xenon CT technique

# concept[].definition
Perfusion analysis by Stable Xenon CT technique

# concept[].display
Perfusion analysis by IV Iodinated Contrast CT technique

# concept[].definition
Perfusion analysis by IV Iodinated Contrast CT technique

# concept[].display
Perfusion analysis by Arterial Spin Labeling MR technique

# concept[].definition
Perfusion analysis by Arterial Spin Labeling (ASL) MR technique

# concept[].display
Perfusion analysis by Susceptibility MR technique

# concept[].definition
Perfusion analysis by Susceptibility (T2*) MR technique

# concept[].definition
Singular Value Decomposition (SVD) deconvolution

# concept[].definition
Ktrans, the volume transfer constant of a tracer diffusion kinetic model, specifically the volume transfer constant between blood plasma and extravascular extracellular space (EES)See Tofts et al, "Estimating Kinetic Parameters From Dynamic Contrast-Enhanced T1-Weighted MRI of a Diffusable Tracer: Standardized Quantities and Symbols", Journal of Magnetic Resonance Imaging, vol. 10, pp. 223-232, 1999.

# concept[].definition
kep, the rate constant between extravascular extracellular space (EES) and blood plasmaSee Tofts et al, "Estimating Kinetic Parameters From Dynamic Contrast-Enhanced T1-Weighted MRI of a Diffusable Tracer: Standardized Quantities and Symbols", Journal of Magnetic Resonance Imaging, vol. 10, pp. 223-232, 1999.

# concept[].definition
ve, the fractional (not absolute) volume of extravascular extracellular space (EES) per unit volume of tissueSee Tofts et al, "Estimating Kinetic Parameters From Dynamic Contrast-Enhanced T1-Weighted MRI of a Diffusable Tracer: Standardized Quantities and Symbols", Journal of Magnetic Resonance Imaging, vol. 10, pp. 223-232, 1999.

# concept[].definition
The initial area under the contrast agent concentration-time curve

# concept[].definition
The initial area under the contrast agent concentration-time curve at 60 seconds after the onset time

# concept[].definition
The initial area under the contrast agent concentration-time curve at 90 seconds after the onset time

# concept[].definition
The initial area under the contrast agent concentration-time curve at 180 seconds after the onset time

# concept[].definition
The initial area under the contrast agent concentration-time curve, normalized with the corresponding arterial input function, such that IAUCBN = IAUC / IAUCAIF.

# concept[].definition
The initial area under the contrast agent concentration-time curve at 60 seconds after the onset time, normalized with the corresponding arterial input function, such that IAUC60BN = IAUC60 / IAUC60AIF.

# concept[].definition
The initial area under the contrast agent concentration-time curve at 90 seconds after the onset time, normalized with the corresponding arterial input function, such that IAUC90BN = IAUC90 / IAUC90AIF.

# concept[].definition
The initial area under the contrast agent concentration-time curve at 180 seconds after the onset time, normalized with the corresponding arterial input function, such that IAUC180BN = IAUC180 / IAUC180AIF.

# concept[].definition
τm. The mean intracellular water lifetime (τi). Used in the Shutter-Speed Model (SSM) of tracer kinetics.

# concept[].definition
vp. The fractional (not absolute) blood plasma volume per unit volume of tissue.See Tofts et al, "Estimating Kinetic Parameters From Dynamic Contrast-Enhanced T1-Weighted MRI of a Diffusable Tracer: Standardized Quantities and Symbols", Journal of Magnetic Resonance Imaging, vol. 10, pp. 223-232, 1999.

# concept[].definition
A tracer diffusion kinetic model in which the permeability is assumed to be isodirectional.See P. Tofts, "Modeling tracer kinetics in dynamic Gd-DTPA MR imaging", Journal of Magnetic Resonance Imaging, vol. 7, pp. 91-101, 1997.Mathematically equivalent to the model proposed by Kety in a non-MRI context, hence sometimes refered to as the Tofts-Kety (TK) model. See Kety SS. The Theory and Applications of the Exchange of Inert Gas at the Lungs and Tissues. Pharmacological Reviews. 1951 Mar 1;3(1):1-41.

# concept[].definition
A tracer diffusion kinetic model in which the permeability is not assumed to be isodirectional, and which includes the contribution of tracer in the blood plasma to the total tissue concentration.See P. Tofts, "Modeling tracer kinetics in dynamic Gd-DTPA MR imaging", Journal of Magnetic Resonance Imaging, vol. 7, pp. 91-101, 1997.

# concept[].definition
A semiquantitative analysis of the contrast-enhancement concentration versus time curve that avoids the use of a pharmacokinetic model.

# concept[].definition
A tracer diffusion kinetic model that accounts for the tumor leakage profile during the first pass of contrast.See Li, Ka-Loh, Xiao Ping Zhu, John Waterton, and Alan Jackson. "Improved 3D Quantitative Mapping of Blood Volume and Endothelial Permeability in Brain Tumors." Journal of Magnetic Resonance Imaging 12, no. 2 (2000): 347-357. doi:​10.1002/​1522-2586(200008)12:​2<347::AID-JMRI19>​3.0.CO;2-7.

# concept[].definition
A tracer diffusion kinetic model that does not assume that intercompartmental water molecule exchange is infinitely fast.See Li, Xin, Wei Huang, Thomas E. Yankeelov, Alina Tudorica, William D. Rooney, and Charles S. Springer. "Shutter-Speed Analysis of Contrast Reagent Bolus-Tracking Data: Preliminary Observations in Benign and Malignant Breast Disease." Magnetic Resonance in Medicine 53, no. 3 (2005): 724-29. doi:10.1002/mrm.20405.

# concept[].definition
A tracer diffusion kinetic model that mathematically unifies the Tofts, Extended Tofts, Adiabatic Tissue Homogeneity, and Two Compartment Exchange modelsSee Schabel MC. A unified impulse response model for DCE-MRI. Magnetic Resonance in Medicine. 2012;68(5):1632-46. doi:10.1002/mrm.24162.

# concept[].definition
An adiabatic approximation to the tissue homogeneity tracer diffusion kinetic model, which assumes that the tracer concentration in parenchymal tissue changes slowly relative to that in capillaries.See St. Lawrence KS, Lee T-Y. An Adiabatic Approximation to the Tissue Homogeneity Model for Water Exchange in the Brain: I. Theoretical Derivation. J Cereb Blood Flow Metab. 1998 Dec;18(12):1365-77. doi:10.1097/00004647-199812000-00011.

# concept[].definition
A tracer diffusion kinetic that incorporates the extracellular space of the lesion as a peripheral compartment, connected to the central (plasma) compartment by linear exchange processes in both directions.See Brix G, Semmler W, Port R, Schad LR, Layer G, Lorenz WJ. Pharmacokinetic Parameters in CNS Gd-DTPA Enhanced MR Imaging. Journal of Computer Assisted Tomography. 1991;15(4):621-8.

# concept[].definition
T1 measurement by Multiple Flip Angles (MFA) (variable saturation) method

# concept[].definition
T1 measurement by Inversion Recovery (IR) method

# concept[].definition
Calculation was performed using a fixed value of T1 rather than a measured value. The value could be encoded as the value of (126353, DCM, "T1 Used For Calculation").

# concept[].definition
The fixed value of T1 used for a calculation.

# concept[].definition
A population-averaged Arterial Input Function.

# concept[].definition
An Arterial Input Function computed from a user-defined Region of Interest.

# concept[].definition
An Arterial Input Function computed from an automatically detected Region of Interest.

# concept[].definition
A data-driven blind source separation (BSS) algorithm that estimates AIF from individuals without any presumed AIF model and initialization. See Lin, Yu-Chun, Tsung-Han Chan, Chong-Yung Chi, Shu-Hang Ng, Hao-Li Liu, Kuo-Chen Wei, Yau-Yau Wai, Chun-Chieh Wang, and Jiun-Jie Wang. "Blind Estimation of the Arterial Input Function in Dynamic Contrast-Enhanced MRI Using Purity Maximization." Magnetic Resonance in Medicine 68, no. 5 (November 1, 2012): 1439-49. doi:10.1002/mrm.24144.

# concept[].definition
The time at which the concentration-time curve achieves its peak for the first time. Used as a concept name for a value or as a method.

# concept[].definition
The nominal time at which arrival of a contrast bolus is detected, which is used as a reference point for subsequent calculations. Used as a concept name for a value or as a method. No specific computational method is implied by this general definition. Abbreviated BAT.

# concept[].definition
The time at which the concentration-time curve achieves half of its peak density for the first time. Used as a concept name for a value or as a method.

# concept[].definition
A method of determining BAT that involves computing the temporal derivative of the concentration-time curve and selecting the time when the temporal derivative exceeds a specified threshold. See Shpilfoygel Med Phys 2008. doi:10.1118/1.1288669.

# concept[].definition
A threshold applied to the temporal derivative of the concentration-time curve.

# concept[].definition
The maximum rate of signal intensity change within a measured region of a time-activity curve. See Boonsirikamchai, Piyaporn, Harmeet Kaur, Deborah A. Kuban, Edward Jackson, Ping Hou, and Haesun Choi. "Use of Maximum Slope Images Generated From Dynamic Contrast-Enhanced MRI to Detect Locally Recurrent Prostate Carcinoma After Prostatectomy: A Practical Approach." American Journal of Roentgenology 198, no. 3 (March 1, 2012): W228-W236. doi:10.2214/AJR.10.6387.

# concept[].definition
The maximum degree of signal intensity change within a measured region of a time-activity curve. See Boonsirikamchai, Piyaporn, Harmeet Kaur, Deborah A. Kuban, Edward Jackson, Ping Hou, and Haesun Choi. "Use of Maximum Slope Images Generated From Dynamic Contrast-Enhanced MRI to Detect Locally Recurrent Prostate Carcinoma After Prostatectomy: A Practical Approach." American Journal of Roentgenology 198, no. 3 (March 1, 2012): W228-W236. doi:10.2214/AJR.10.6387.

# concept[].definition
The degree to which a paramagnetic contrast agent can enhance the proton longitudinal relaxation rate constant (R1, 1/T1), normalized to the concentration of the contrast agent. Also referred to as r1. Typically expressed in units of l/mmol/s.

# concept[].definition
The absolute flow rate of blood perfusing a region as volume per mass per unit of time. The mass divisor may be approximated by a measurement of volume assuming a tissue density of 1.

# concept[].definition
The absolute volume of blood perfusing a region as volume per mass. The mass divisor may be approximated by a measurement of volume assuming a tissue density of 1.

# concept[].definition
The percent of the oxygen removed from the blood by tissue during its passage through the capillary network. For example, as measured by blood oxygenation level dependent (BOLD) MR. See He, Xiang, and Dmitriy A. Yablonskiy. "Quantitative BOLD: Mapping of Human Cerebral Deoxygenated Blood Volume and Oxygen Extraction Fraction: Default State." Magnetic Resonance in Medicine 57, no. 1 (2007): 115-26.

# concept[].definition
The longitiudinal relaxation rate constant for the decay of longitiudinal magnetization caused by spin-lattice relaxation. The inverse of longitudinal relaxation time, i.e., R1 = 1/T1.

# concept[].definition
The transverse relaxation rate constant for the decay of transverse magnetization caused by spin-spin relaxation. The inverse of transverse relaxation time, i.e., R2 = 1/T2.

# concept[].definition
The transverse relaxation rate constant for the decay of transverse magnetization caused by a combination of spin-spin relaxation and magnetic field inhomogeneity. The inverse of transverse relaxation time, i.e., R2* = 1/T2*.

# concept[].definition
Magnetic Susceptibility is a measure of the amount of magnetization induced in a material when placed in an external magnetic field. It is the quantity encoded as the voxel intensity in Quantitative Susceptibility Map (QSM) images.It is a dimensionless quantity, usually recorded with units of parts per millions (ppm).See Liu T, Wisnieff C, Lou M, Chen W, Spincemaille P, Wang Y. Nonlinear formulation of the magnetic field to source relationship for robust quantitative susceptibility mapping. Magnetic Resonance in Medicine. 2013;69(2):467-76. .See Wang Y, Liu T. Quantitative susceptibility mapping (QSM): Decoding MRI data for a tissue magnetic biomarker. Magnetic Resonance in Medicine. 2015;73(1):82-101. .

# concept[].definition
The relative flow rate of blood perfusing a region. Obtained by dividing the absolute flow rate of blood perfusing a region by the absolute flow rate of blood perfusing a reference region.

# concept[].definition
The relative volume of blood perfusing a region. Obtained by dividing the absolute volume of blood perfusing a region by the absolute volume of blood perfusing a reference region.

# concept[].definition
A ratio of locally measured radioactivity concentration versus the injected radioactivity distributed evenly throughout the whole body.This general concept encompasses all specific methods of calculating the whole body volume of distribution, such as using body weight, lean body mass, body surface area, etc.

# concept[].definition
Standardized Uptake Value calculated using body weight. The patient size correction factor for males and females is body weight.Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at

# concept[].definition
Standardized Uptake Value calculated using lean body mass by James method. The patient size correction factor for males is 1.10 * weight - (120 or 128) * (weight/height) ^2, and for females is 1.07 * weight - 148 * (weight/height) ^2.Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at , except that either 120 or 128 may be used as the multiplier parameter for males).Unfortunately, Sugawara used a parameter of 120 rather than 128, propagating an error in Morgan DJ, Bray KM. Lean Body Mass as a Predictor of Drug Dosage: Implications for Drug Therapy. Clinical Pharmacokinetics. 1994;26(4):292-307, which misquoted the original LBM definition that used 128 in James WPT, Waterlow JC. Research on Obesity: A Report of the DHSS/MRC Group. London: Her Majesty’s Stationery Office; 1976. Implementations differ in whether they have used 120 or 128 when using this code. See Kelly M. SUV: Advancing Comparability and Accuracy. Siemens; 2009. Available from: .

# concept[].definition
Standardized Uptake Value calculated using body surface area. The patient size correction factor for males and females is weight^ 0.425 * height^0.725 * 0.007184.Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at

# concept[].definition
Standardized Uptake Value calculated using ideal body weight. The patient size correction factor for males is 48.0 + 1.06 * (height - 152) and for females is 45.5 + 0.91 * (height - 152).Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at

# concept[].definition
Standardized Uptake Value calculated using lean body mass by Janmahasatian method. The patient size correction factor for males is 9.27E3 * weight / (6.68E3 + 216 * weight / (height^2)) and for females is 9.27E3 * weight / (8.78E3 + 244 * weight / (height^2)).Defined in Janmahasatian et al. Quantification of Lean Bodyweight. Clin Pharmacokinet. 2005 Oct 1;44(10):1051-65. at and its role in SUVlbm(Janma) calculation is discussed in Tahari et al. Optimum Lean Body Formulation for Correction of Standardized Uptake Value in PET Imaging. Journal of Nuclear Medicine. 2014 Sep 1;55(9):1481-4. at .

# concept[].definition
Standardized Uptake Value calculated using lean body mass by James method, using the originally published 128 multiplier for males. The patient size correction factor for males is 1.10 * weight - 128) * (weight/height) ^2, and for females is 1.07 * weight - 148 * (weight/height) ^2.

# concept[].definition
Method of calculating Standardized Uptake Value using body weight. The patient size correction factor for males and females is body weight.Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at

# concept[].definition
Method of calculating Standardized Uptake Value using lean body mass. The patient size correction factor for males is 1.10 * weight - (120 or 128) * (weight/height) ^2, and for females is 1.07 * weight - 148 * (weight/height) ^2.Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at Unfortunately, Sugawara used a parameter of 120 rather than 128, propagating an error in Morgan DJ, Bray KM. Lean Body Mass as a Predictor of Drug Dosage: Implications for Drug Therapy. Clinical Pharmacokinetics. 1994;26(4):292-307, which misquoted the original LBM definition that used 128 in James WPT, Waterlow JC. Research on Obesity: A Report of the DHSS/MRC Group. London: Her Majesty’s Stationery Office; 1976. Implementations differ in whether they have used 120 or 128 when using this code. See Kelly M. SUV: Advancing Comparability and Accuracy. Siemens; 2009. Available from: .

# concept[].display
SUV body surface area calculation method

# concept[].definition
Method of calculating Standardized Uptake Value using body surface area. The patient size correction factor for males and females is weight^ 0.425 * height^0.725 * 0.007184.Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at

# concept[].display
SUV ideal body weight calculation method

# concept[].definition
Method of calculating Standardized Uptake Value using ideal body weight. The patient size correction factor for males is 48.0 + 1.06 * (height - 152) and for females is 45.5 + 0.91 * (height - 152).Defined in Sugawara et al. Reevaluation of the Standardized Uptake Value for FDG: Variations with Body Weight and Methods for Correction.Radiology, 1999 at

# concept[].display
SUV lean body mass calculation Janmahasatian method

# concept[].definition
Janmahasatian method of calculating Standardized Uptake Value using lean body mass. The patient size correction factor for males is 9.27E3 * weight / (6.68E3 + 216 * weight / (height^2)) and for females is 9.27E3 * weight / (8.78E3 + 244 * weight / (height^2)).Defined in Janmahasatian et al. Quantification of Lean Bodyweight. Clin Pharmacokinet. 2005 Oct 1;44(10):1051-65. at and its role in SUVlbm(Janma) calculation is discussed in Tahari et al. Optimum Lean Body Formulation for Correction of Standardized Uptake Value in PET Imaging. Journal of Nuclear Medicine. 2014 Sep 1;55(9):1481-4. at .

# concept[].display
SUV lean body mass calculation method using 128 multiplier

# concept[].definition
James method of calculating Standardized Uptake Value using lean body mass with the originally published 128 multiplier for males. The patient size correction factor for males is 1.10 * weight - 128) * (weight/height) ^2, and for females is 1.07 * weight - 148 * (weight/height) ^2.

# concept[].definition
A beta-amyloid PET radiotracer that is an analog of thioflavin T.

# concept[].definition
A nicotinic α4β2 receptor (nAChR) PET radiotracer.

# concept[].definition
A radioconjugate consisting of n-acetylaspartylglutamate labeled with lutetium Lu 177 used as a radiotracer.

# concept[].definition
A Cu 64 Monoclonal Antibody (mAb) PET Radiotracer.

# concept[].definition
A Zr 89 Monoclonal Antibody (mAb) PET Radiotracer.

# concept[].definition
A Zr 89 cG250-F(ab')(2) PET Radiotracer.

# concept[].definition
An F 18 Fluorotriopride PET radiotracer.

# concept[].definition
An F 18 Fluoromisonidazole PET radiotracer.

# concept[].definition
An I 124 cancer targeted phospholipid ether PET radiotracer.

# concept[].definition
An I 131 cancer targeted phospholipid ether PET radiotracer.

# concept[].definition
A PET radiotracer used for tau brain imaging.See Harada R, Okamura N, Furumoto S, Furukawa K, Ishiki A, Tomita N, et al. 18F-THK5351: A Novel PET Radiotracer for Imaging Neurofibrillary Pathology in Alzheimer Disease. Journal of Nuclear Medicine. 2016 Feb 1;57(2):208-14. doi:10.2967/jnumed.115.164848

# concept[].definition
A PET radiotracer used for myocardial perfusion imaging.See Yu M, Nekolla SG, Schwaiger M, Robinson SP. The Next Generation of Cardiac Positron Emission Tomography Imaging Agents: Discovery of Flurpiridaz F-18 for Detection of Coronary Disease. Seminars in Nuclear Medicine. 2011 Jul;41(4):305-13. doi:10.1053/j.semnuclmed.2011.02.004See SNMMI. Flurpiridaz.

# concept[].definition
A PET radiotracer used for tau brain imaging.See Wong DF, Comley R, Kuwabara H, Rosenberg PB, Resnick SM, Ostrowitzki S, et al. First in-human PET study of 3 novel tau radiopharmaceuticals: [11C]RO6924963, [11C]RO6931643, and [18F]RO6958948. J Nucl Med. 2018 May 4; doi:10.2967/jnumed.118.209916.

# concept[].definition
A PET radiotracer used for tau brain imaging.See Wong DF, Comley R, Kuwabara H, Rosenberg PB, Resnick SM, Ostrowitzki S, et al. First in-human PET study of 3 novel tau radiopharmaceuticals: [11C]RO6924963, [11C]RO6931643, and [18F]RO6958948. J Nucl Med. 2018 May 4; doi:10.2967/jnumed.118.209916.

# concept[].definition
A Zr 89 Glembatumumab vedotin PET Radiotracer.

# concept[].definition
A Zr 89 Pinatuzumab vedotin PET Radiotracer.

# concept[].definition
A Zr 89 Polatuzumab vedotin PET Radiotracer.

# concept[].definition
A Zr 89 nanocolloidal albumin PET Radiotracer.See Heuveling et al. Pilot Study on the Feasibility of PET/CT Lymphoscintigraphy with 89Zr-Nanocolloidal Albumin for Sentinel Node Identification in Oral Cancer Patients. J Nucl Med. 2013 Apr;54(4):585-9. doi:10.2967/jnumed.112.115188. http://jnm.snmjournals.org/content/54/4/585.long

# concept[].definition
A PET radiotracer used for tau brain imaging.See Wong DF, Comley R, Kuwabara H, Rosenberg PB, Resnick SM, Ostrowitzki S, et al. First in-human PET study of 3 novel tau radiopharmaceuticals: [11C]RO6924963, [11C]RO6931643, and [18F]RO6958948. J Nucl Med. 2018 May 4; doi:10.2967/jnumed.118.209916.

# concept[].definition
A PET radiotracer targeting PMSA used for prostate cancer imaging.See Giesel FL, Hadaschik B, Cardinale J, Radtke J, Vinsensia M, Lehnert W, et al. F-18 labelled PSMA-1007: biodistribution, radiation dosimetry and histopathological validation of tumor lesions in prostate cancer patients. Eur J Nucl Med Mol Imaging. 2017 Apr 1;44(4):678–88. doi:10.1007/s00259-016-3573-4.

# concept[].definition
A PET radiotracer targeting PMSA used for prostate cancer imaging.See Afshar-Oromieh A, Hetzheim H, Kratochwil C, Benesova M, Eder M, Neels OC, et al. The Theranostic PSMA Ligand PSMA-617 in the Diagnosis of Prostate Cancer by PET/CT: Biodistribution in Humans, Radiation Dosimetry, and First Evaluation of Tumor Lesions. J Nucl Med. 2015 Nov 1;56(11):1697–705. doi: 10.2967/jnumed.115.161299.

# concept[].definition
A Zr 89 Df-FK peptide PET Radiotracer.See Jacobsen O et al. MicroPET Imaging of Integrin αvβ3 Expressing Tumors Using 89Zr-RGD Peptides. Mol Imaging Biol. 2011 Dec; 13(6): 1224-1233. doi:10.1007/s11307-010-0458-y. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137711/

# concept[].definition
A Zr 89 Df-FK-PEG(3) peptide PET Radiotracer.See Jacobsen O et al. MicroPET Imaging of Integrin αvβ3 Expressing Tumors Using 89Zr-RGD Peptides. Mol Imaging Biol. 2011 Dec; 13(6): 1224-1233. doi:10.1007/s11307-010-0458-y. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137711/

# concept[].definition
A Zr 89 Df-[FK](2) peptide PET Radiotracer.See Jacobsen O et al. MicroPET Imaging of Integrin αvβ3 Expressing Tumors Using 89Zr-RGD Peptides. Mol Imaging Biol. 2011 Dec; 13(6): 1224-1233. doi:10.1007/s11307-010-0458-y. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137711/

# concept[].definition
A Zr 89 Df-[FK](2)-3PEG(4) peptide PET Radiotracer.See Jacobsen O et al. MicroPET Imaging of Integrin αvβ3 Expressing Tumors Using 89Zr-RGD Peptides. Mol Imaging Biol. 2011 Dec; 13(6): 1224-1233. doi:10.1007/s11307-010-0458-y. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3137711/

# concept[].definition
An I125 translocator protein (TSPO) SPECT tracer.See Wang H, Pullambhatla M, Guilarte TR, Mease RC, Pomper MG. Synthesis of [125I]IodoDPA-713, a New Probe for Imaging Inflammation. Biochem Biophys Res Commun. 2009 Nov 6;389(1):80–3. doi:10.1007/​10.1016/​j.bbrc.2009.08.102http://​www.ncbi.nlm.nih.gov/​pmc/​articles/​PMC2764231/

# concept[].definition
A C11 translocator protein (TSPO) PET tracer.See Endres CJ, Pomper MG, James M, Uzuner O, Hammoud DA, Watkins CC, et al. Initial Evaluation of 11C-DPA-713, a Novel TSPO PET Ligand, in Humans. J Nucl Med. 2009 Aug;50(8):1276–82. doi:10.2967/​jnumed.109.062265http://www.ncbi.nlm.nih.gov/​pmc/​articles/​PMC2883612/

# concept[].definition
An F18 translocator protein (TSPO) PET tracer.See Vicidomini C, Panico M, Greco A, Gargiulo S, Coda ARD, Zannetti A, et al. In vivo imaging and characterization of [18F]DPA-714, a potential new TSPO ligand, in mouse brain and peripheral tissues using small-animal PET. Nuclear Medicine and Biology. 2015 Mar 1;42(3):309–16. doi:10.1016/​j.nucmedbio.2014.11.009

# concept[].display
IEC61217 Patient Support Continuous Yaw Angle

# concept[].definition
Patient Support isocentric rotation (in the IEC FIXED REFERENCE Coordinate System) as defined by . DICOM represents this value as a Continuous Rotation Angle in degrees.

# concept[].display
IEC61217 Table Top Continuous Pitch Angle

# concept[].definition
Pitch of the Table Top (in the IEC TABLE TOP Coordinate System) as defined by . DICOM represents this value as a Continous Rotation Angle in degrees.

# concept[].display
IEC61217 Table Top Continuous Roll Angle

# concept[].definition
Roll of the Table Top (in the IEC TABLE TOP Coordinate System) as defined by . DICOM represents this value as a Continous Rotation Angle in degrees.

# concept[].display
IEC61217 Table Top Eccentric Axis Distance

# concept[].definition
Eccentric axis offset, in mm (in the IEC PATIENT SUPPORT Coordinate System) as defined by .

# concept[].display
IEC61217 Table Top Continuous Eccentric Angle

# concept[].definition
Table Top eccentric rotation (in the IEC TABLE TOP ECCENTRIC Coordinate System) as defined by . DICOM represents this value as a Continuous Rotation Angle in degrees.

# concept[].definition
Lateral displacement of the table top, in mm (in the IEC TABLE TOP Coordinate System) as defined by .

# concept[].display
IEC61217 Table Top Longitudinal Position

# concept[].definition
Longitudinal displacement of the table top, in mm (in the IEC TABLE TOP Coordinate system) as defined by .

# concept[].definition
Vertical displacement of the table top, in mm (in the IEC TABLE TOP Coordinate System) as defined by .

# concept[].definition
Rotation of the gantry (around the Y-axis of the IEC FIXED REFERENCE Coordinate System) as defined by . DICOM represents this value as a Continuous Rotation Angle in degrees.

# concept[].definition
Pitch angle of rotation of the gantry around the X-axis of the IEC GANTRY Coordinate System. This parameter is not specifically defined by , but is consistent with . DICOM represents this value as a Continuous Rotation Angle in degrees.

# concept[].definition
Yaw angle of rotation of the gantry around the Z-axis of the IEC GANTRY Coordinate System This parameter is not specifically defined by , but is consistent with . DICOM represents this value as a Continuous Rotation Angle in degrees.

# concept[].definition
The body position of the imaging subject relative to the imaging equipment is with the subject's left side positioned towards the front of the equipment viewed from the front

# concept[].definition
The body position of the imaging subject relative to the imaging equipment is with the subject's right side positioned towards the front of the equipment viewed from the front

# concept[].definition
The body position of the imaging subject relative to the imaging equipment is with the subject's posterior (dorsal) side positioned towards the front of the equipment viewed from the front

# concept[].definition
The body position of the imaging subject relative to the imaging equipment is with the subject's anterior (ventral) side positioned towards the front of the equipment viewed from the front

# concept[].definition
The International Laboratory Code Registry (ILCR) of the Institute of Laboratory Animal Research (ILAR). See .

# concept[].display
Preclinical Small Animal Imaging Acquisition Context

# concept[].definition
A description of the conditions present during acquisition of images of small animals during preclinical research.

# concept[].definition
The conditions present related to the handling of an animal during a specified phase.

# concept[].definition
A specified phase of handling of an animal (e.g., transport, preparation).

# concept[].definition
A description of biosafety conditions (e.g., present during small animal handling for research).

# concept[].definition
The reason that biosafety controls are in place.

# concept[].definition
A description of heating conditions (e.g., present during small animal handling for research).

# concept[].definition
A description of Circadian effects (e.g., present during small animal handling for research).

# concept[].definition
A form of face mask that fits over the nose used for delivery of inhalational anesthesia (usually for small animals)

# concept[].definition
Cannula inserted in the nose used for delivery of inhalational anesthesia or other inhaled gases.

# concept[].definition
A route of administration of a substance via the retro-orbital venous sinus.Yardeni T et al. (2011). Retro-orbital injections in mice. Lab Animal, 40(5), 155-160. doi:10.1038/laban0511-155.

# concept[].definition
The phase of handling of an animal that provides their normal environment between procedures.

# concept[].definition
The phase of handling of an animal that is transport between environments.

# concept[].definition
The phase of handling of an animal that is staging prior to an imaging procedure (e.g., after removal from their home environment and transport cage, and awaiting preparation, induction or imaging). During this phase the animals are not subject to intervention (e.g., injection, catheterization) (cf. 127104, DCM, "Preparation for imaging")).

# concept[].definition
The phase of handling of an animal that is preparation prior to an imaging procedure that involves handling and intervention (e.g., such as injection, catheterization) (cf. 127103, DCM, "Staging prior to imaging")).

# concept[].definition
The phase of handling of an animal during which the housing conditions are applicable.

# concept[].definition
The room type in which racks of animal cages are housed.

# concept[].definition
The identifier of the room in which racks of animal cages are housed.

# concept[].definition
The manufacturer's product name of the animal housing rack.

# concept[].definition
The manufacturer's product code of the animal housing rack.

# concept[].definition
The manufacturer's product name of the animal housing unit (or bottom of unit if separate lid).

# concept[].definition
The manufacturer's product code of the animal housing unit (or bottom of unit if separate lid).

# concept[].definition
The manufacturer's product name of the animal housing unit lid.

# concept[].definition
The manufacturer's product code of the animal housing unit lid.

# concept[].definition
The number of animal housing racks per room.

# concept[].definition
The number of animal housing units per rack.

# concept[].definition
The location of the housing unit in the rack.

# concept[].display
Number of animals within same housing unit

# concept[].definition
The number of animals in a single housing (e.g., in a single cage, or in an animal carrier for imaging).

# concept[].definition
The sex of multiple animals contained in a single housing (cage).

# concept[].definition
A group consisting of individuals of both sexes (both males and females).

# concept[].definition
The total period of time that a subject spends in specified housing conditions.

# concept[].definition
The period of time between changes of housing conditions.

# concept[].definition
The period of time between episodes of manual handling of the subject.

# concept[].definition
A description of the manner in which the housing unit is moved (e.g., how a cage is transported).

# concept[].definition
The width of the housing unit (e.g., cage).

# concept[].definition
The height of the housing unit (e.g., cage).

# concept[].definition
The length of the housing unit (e.g., cage).

# concept[].definition
Whether or not the housing unit (e.g., cage) is individually ventilated.

# concept[].definition
How frequently the entire volume of air within a defined space is replaced (e.g., within an animal cage).

# concept[].definition
Whether or not the housing unit has been previously used for different animals.

# concept[].definition
The device (e.g., animal housing unit aka. cage) has not previously been used for different animals.

# concept[].definition
The device (e.g., animal housing unit aka. cage) has previously been used for different animals.

# concept[].definition
The manufacturer of the bedding material.

# concept[].definition
The manufacturer's product name of the bedding material.

# concept[].definition
The manufacturer's product code of the bedding material.

# concept[].definition
Material provided to enrich the environment of a small animal for the purpose of reducing stress, improving health and/or improving reproducibility of results.

# concept[].definition
The manufacturer of the material provided to enrich the environment of a small animal.

# concept[].definition
Whether or not material is provided to enrich the environment of a small animal for the purpose of reducing stress, improving health and/or improving reproducibility of results.

# concept[].definition
Whether or not an exerciser device is present.

# concept[].definition
The type of shelter provided for small animals within their housing.

# concept[].definition
The manufacturer of the small animal shelter.

# concept[].definition
The manufacturer's product name of the small animal shelter.

# concept[].definition
The manufacturer's product code of the small animal shelter.

# concept[].definition
The manufacturer's product name of the feed.

# concept[].definition
The manufacturer's product code of the feed.

# concept[].definition
Temperature is regulated by feedback from a temperature sensor used to control an active heating or cooling device.

# concept[].definition
The total duration of single light-dark cycle (e.g., usually 24 hours).

# concept[].definition
The time of day when the lights are turned on.

# concept[].definition
Red translucent igloo-shaped small animal shelter

# concept[].definition
Animal bedding material made from aspen chips.

# concept[].definition
Animal bedding material made from aspen shavings.

# concept[].definition
Animal bedding material made from (milled) corn cobs.

# concept[].definition
Animal bedding material made from paper.

# concept[].definition
Animal bedding material made from pine chips.

# concept[].definition
Animal bedding material made from pine shavings.

# concept[].definition
A device for measuring the temperature of the carrier (holder) used for small animal imaging as a means of monitoring or regulating the animal's temperature (e.g., a non-magnetic thermocouple embedded in or attached to the carrier for MRI).

# concept[].definition
A method or device that uses forced hot air to maintain the body temperature of a subject.

# concept[].definition
An imaging device that contains an integrated method of temperature regulation for maintaining the body temperature of the imaging subject.

# concept[].definition
A device that physically supports the patient and contains an integrated method of temperature regulation for maintaining the body temperature of the imaging subject (e.g., the carrier used for imaging a small animal such as a mouse).

# concept[].definition
A blanket that uses circulating hot water to maintain the body temperature of a subject.

# concept[].definition
A pad that is pre-heated before use that is used to maintain the body temperature of a subject (e.g., pre-heated in a microwave or autoclave).

# concept[].definition
No mechanism is used to maintain the body temperature of a subject.

# concept[].definition
NIH Open Formula Rat and Mouse Ration - 18% Crude Protein Autoclavable.Specification at .

# concept[].definition
Water that has been purified by reverse osmosis.

# concept[].display
Reverse osmosis purified, HCl acidified water

# concept[].definition
Water that has been purified by reverse osmosis and HCl acidified.

# concept[].definition
Information about different anesthesia methods used during a procedure (from AQI Schema AnesthesiaMethodSetType.

# concept[].definition
Information about a single anesthesia method used during a procedure (from AQI Schema AnesthesiaMethodType.

# concept[].definition
Category of anesthesia technique used during a procedure (from AQI Schema AnesthesiaCategoryCodeType.

# concept[].definition
Details of anesthesia technique used during a procedure (from AQI Schema AnesthesiaMethodType.

# concept[].definition
Information about airway management used during a procedure (from AQI Schema AirwayManagementSetType.

# concept[].definition
Type of airway management used during a procedure (from AQI Schema AirwayManagementMethodCodeType.

# concept[].definition
Subtype of airway management of airway management used during a procedure (from AQI Schema AirwayManagementSubMethodCodeType.

# concept[].definition
Set of medications applied during the anesthesia (from AQI Schema MedicationsSetType.

# concept[].definition
A gas that delivers an inhalational anesthetic to a subject (e.g., air, oxygen).

# concept[].definition
A room for keeping and raising animals for observation or research (vivarium).

# concept[].definition
A room for preparing a subject (such as a research small animal) prior to a procedure (such as an imaging procedure).

# concept[].definition
A room in which an imaging procedure is performed.

# concept[].definition
A product that is locally manufactured (i.e., within the facility or institution).

# concept[].definition
A food item that is out of the ordinary and provides pleasure.

# concept[].definition
A substance from a source external to a subject.

# concept[].definition
The tissue from which a substance originated.

# concept[].definition
The taxonomic rank value (e.g., genus, subgenus, species or subspecies) from which a substance originated.

# concept[].definition
An identifier of a group of animals that is genetically uniform.

# concept[].definition
A description of a group of animals that is genetically uniform.

# concept[].definition
A system of names or descriptions used in a particular field.

# concept[].definition
An identifier of a specific variation of a targeted gene or introduced transgene.

# concept[].definition
A description of a specific variation of a targeted gene or introduced transgene.

# concept[].definition
The three dimensional coordinates that identify a (usually small) target within the body.

# concept[].definition
The part of the imaging target that was used as a reference point associated with a specific Frame of Reference.The Position Reference Indicator may or may not coincide with the origin of the fixed frame of reference related to the Frame of Reference.For a Patient-related Frame of Reference, this is an anatomical reference point, often a well-known surface anatomical point.

# concept[].definition
Tumor cells or tissue or other material obtained from a donor intended to be implanted in a research subject.

# concept[].definition
Preformed fibrils of human alpha synuclein.

# concept[].definition
Preformed fibrils of mouse alpha synuclein.

# concept[].definition
An iodine containing X-Ray contrast agent that does not dissociate in water, therefore, is lower in osmolality, and has a significantly lower incidence of adverse reactions than ionic iodinated contrast agents.

# concept[].definition
The date that a glucose measurement was performed.

# concept[].definition
The time that a glucose measurement was performed.

# concept[].definition
A nuclear medicine imaging procedure using a single photon emissive radionuclide with tomographic reconstruction, over an anatomical extent of the entire body.

# concept[].definition
A nuclear medicine imaging procedure using a single photon emissive radionuclide with tomographic reconstruction combined with transmissive X-Ray computed tomography for attenuation compensation, over an anatomical extent of the entire body.

# concept[].definition
The task is to add an addendum to an existing report.

# concept[].definition
The imaging study to be read involves the specified modality

# concept[].definition
The specialty of the reader of the imaging study

# concept[].definition
The type of report that is being requested.

# concept[].definition
A final report is a report that is expected to contain all information and all the reportable findings.

# concept[].definition
A medical specialty concerned with abdominal imaging.

# concept[].definition
A medical specialty concerned with cardiac imaging.

# concept[].definition
A medical specialty concerned with head and neck imaging.

# concept[].definition
A medical specialty concerned with musculoskeletal imaging.

# concept[].definition
A medical specialty concerned with neurology.

# concept[].definition
A medical specialty concerned with neuroradiologic imaging.

# concept[].definition
A medical specialty concerned with obstetric and gynecologic imaging.

# concept[].definition
A medical specialty concerned with oncologic imaging.

# concept[].definition
A medical specialty concerned with oncology.

# concept[].definition
A medical specialty concerned with thoracic imaging.

# concept[].definition
A medical specialty concerned with pediatric imaging.

# concept[].definition
A medical specialty concerned with vascular imaging.

# concept[].definition
Fetal body weight growth percentile estimated from gestational age by method of Campbell 1991.See Campbell WA, Nardi D, Vintzileos AM, Rodis JF, Turner GW, Egan JF. Transverse Cerebellar Diameter/Abdominal Circumference Ratio Throughout Pregnancy: A Gestational Age-Independent Method to Assess Fetal Growth. Obstetrics & Gynecology. 1991;77(6):893-6. Available at: .

# concept[].definition
Fetal body weight growth percentile estimated from gestational age by method of Hadlock 1991.See Hadlock FP, Harrist RB, Martinez-Poyer J. In utero analysis of fetal growth: a sonographic weight standard. Radiology. 1991 Oct 1;181(1):129-33. DOI:10.1148/radiology.181.1.1887021. Available at: .

# concept[].definition
A plane passing through the superior extent (i.e., towards the head) of the referenced feature

# concept[].definition
A plane passing through the inferior extent (i.e., towards the feet) of the referenced feature

# concept[].definition
A plane passing through the proximal extent (i.e., towards the torso) of the referenced feature

# concept[].definition
A plane passing through the distal extent (i.e., towards the end of the extremity) of the referenced feature

# concept[].definition
A plane passing through the medial extent (i.e., towards the midline of the body) of the referenced feature

# concept[].definition
A plane passing through the lateral extent (i.e., away from the midline of the body) of the referenced feature

# concept[].definition
A plane passing through the leftmost extent of the referenced feature

# concept[].definition
A plane passing through the rightmost extent of the referenced feature

# concept[].definition
A plane passing through the anterior extent of the referenced feature

# concept[].definition
A plane passing through the posterior extent of the referenced feature

# concept[].definition
A plane passing approximately through the center of the referenced feature

# concept[].definition
The geometric center point of a feature, such as an organ, implanted device or morphologic anomaly.

# concept[].definition
The center of mass of a feature, such as an organ, implanted device or morphologic anomaly

# concept[].definition
Point in an image or space from which segmentation is initiated, e.g., by region growing.

# concept[].definition
Point in an image or space that is representative (serves as an example or type for others of the same classification) of a feature, such as an organ, implanted device or morphologic anomaly.

# concept[].definition
Point in an image or space on the boundary of a feature, such as an organ, implanted device or morphologic anomaly.

# concept[].definition
The procedure is contraindicated for patients with impaired renal function.

# concept[].definition
Positioning the patient based on alignment of laser cross-hairs.

# concept[].definition
The anatomical region represented in the acquired data.

# concept[].definition
Organizational department or section responsible for Abdominal Radiology

# concept[].definition
Organizational department or section responsible for Biomedical Engineering

# concept[].definition
Organizational department or section responsible for Cardiovascular Radiology

# concept[].definition
Organizational department or section responsible for Information Technology

# concept[].definition
Organizational department or section responsible for Medical Physics

# concept[].definition
Organizational department or section responsible for Musculoskeletal Radiology

# concept[].definition
Organizational department or section responsible for Pediatric Radiology

# concept[].definition
Organizational department or section responsible for Thoracic Radiology

# concept[].definition
Instances available as input for a general radiotherapeutic workflow.

# concept[].definition
Instances created during a segmentation session.

# concept[].definition
Instances created during a spatial registration.

# concept[].definition
Instances created during preparation prior to planning.

# concept[].definition
Instances created for prescription of a radiotherapeutic treatment.

# concept[].definition
Image instances that represent an image series that is intended to be the primary input for the dose calculation. Any parameters required for dose calculation (such as electron density) is derived from this series.

# concept[].definition
Image instances that represent an image series from which the display coordinate system for a radiotherapeutic treatment planning is derived. Typically this series does not provide the parameters required for the dose calculation.

# concept[].definition
Instances created during the simulation of a radiotherapeutic treatment delivery session. May also include input objects actually used.

# concept[].definition
Instances created during the planning of a radiotherapeutic treatment. May also include input objects actually used.

# concept[].definition
Instances created during the creation of the dosimetric result of a radiotherapeutic treatment plan. May also include input objects actually used.

# concept[].definition
Instances created during the verification of the patient’s treatment position. May also include input objects actually used.

# concept[].definition
Instances created during the treatment session. May also include input objects actually used.

# concept[].definition
Instances created during a treatment course. May also include input objects actually used.

# concept[].definition
Instances created during evaluation of the treatment delivery quality. May also include input objects actually used.

# concept[].definition
Instances available to make a diagnosis.

# concept[].definition
Instances available for prescribing a radiotherapeutic treatment delivery.

# concept[].definition
Instances available for creating a radiotherapeutic treatment plan.

# concept[].definition
Instances available for comparing plans.

# concept[].definition
Instances available to combine radiotherapeutic plans or doses.

# concept[].definition
Instances available for review by a physician.

# concept[].definition
Instances available for review by a physicist.

# concept[].definition
Instances available for review of a tumor board.

# concept[].definition
Instances available to perform quality assurance of a radiotherapeutic treatment delivery plan.

# concept[].definition
Instances available to perform quality assurance of one of the hardware or software components involved in a radiotherapeutic treatment delivery.

# concept[].definition
Instances available for verification of the patient treatment position.

# concept[].definition
Instances available for submission for a clinical trial study.

# concept[].definition
Instances available for submission to a tumor registry.

# concept[].definition
Instances used as an input of a general radiotherapeutic workflow.

# concept[].definition
Instances used for prescribing a radiotherapeutic treatment delivery.

# concept[].definition
Instances used to create a radiotherapeutic treatment plan.

# concept[].definition
Instances used to combine radiotherapeutic plans or doses.

# concept[].definition
Instances used for review by a physician.

# concept[].definition
Instances used for review by a physicist.

# concept[].definition
Instances used to perform quality assurance of a radiotherapeutic treatment delivery plan.

# concept[].definition
Instances used to perform quality assurance of one of the hardware or software components involved in a radiotherapeutic treatment delivery.

# concept[].definition
Instances used during verification of the patient treatment position.

# concept[].definition
Instances used for review of a tumor board.

# concept[].definition
Instances submitted to a tumor registry.

# concept[].definition
Instances submitted to a clinical trial study.

# concept[].definition
Measurement used as the source for derivation.

# concept[].definition
Report used as the source for derivation.

# concept[].definition
Raw Data used as the source for derivation.

# concept[].definition
Real world value map used as the source for derivation.

# concept[].definition
Segmentation used as the source for derivation.

# concept[].definition
Name of an MR pulse sequence for annotation purposes. Potentially vendor-specific name.

# concept[].definition
A structural image used for image processing.

# concept[].definition
OCT angiography method that de-correlates the amplitudes between two consecutive B-scans from the narrowed spectral bands was computed, and all the decorrelation values within certain repeated B-scans were averaged to visualize blood vessels. Methods and algorithms for optical coherence tomography-based angiography: a review and comparison. Anqi Zhang ; Qinqin Zhang ; Chieh-Li Chen ; Ruikang K. Wang (2015). See http://biomedicaloptics.spiedigitallibrary.org/​article.aspx?​articleid=​2464650#​QuantitativeComparisons.

# concept[].definition
OCT angiography method based on variations in the complex (amplitude and phase) OCT signal from repeated B-scans at the same location. There are a number of factors that may cause a change in the OCT signal frequency relative to the signal due to static tissue background. These factors include, for example, the Doppler effect that induces optical frequency shift and the change in backscattering due to the particles that are moving in and out of the OCT-probe volume during imaging. The changes in signal frequency cause the changes in both the amplitude and the phase of the OCT signal. Comparison of the complex (amplitude and phase) signal from repeated B-scans at the same location provides an image that has higher contrast in areas of erythrocyte motion. This method is referred to as OCT-based micro-angiography - complex (OMAGC).

# concept[].definition
OCT angiography method that analyzes the temporal or spatial statistics of the intensity of speckle from OCT images and identifies blood vessels.

# concept[].definition
OCT angiography method that differentiates flow regions. Static regions usually have high correlation values while flow regions have lower correlation values.

# concept[].definition
OCT angiography method that utilizes the Doppler phase resolved information to provide the velocity of flow. Sometimes referred to as the phase variance method.

# concept[].definition
Image using pseudo colors to illustrate multiple OPTENF images obtained at various depth levels within the retina from the OPT flow volume.

# concept[].display
Retina depth encoded structural reflectance map

# concept[].definition
Image using pseudo colors to illustrate multiple OPTENF images obtained at various depth levels within the retina from the OPT structural volume.

# concept[].definition
Image that illustrates the vasculature flow within the entire retina. Generated from the OPT flow volume with pixels approximately from inner limiting membrane (ILM) to photoreceptor inner segment/ellipsoid region (ISe).

# concept[].definition
Image that illustrates the OCT structural reflectance within the entire retina. Generated from the OPT structural volume with pixels approximately from inner limiting membrane (ILM) to photoreceptor inner segment/ellipsoid region (ISe).

# concept[].definition
Image that illustrates the vasculature flow within the vitreous. Generated from the OPT flow volume with pixels approximately from a selected location anterior to ILM, to ILM. This space/potential space is referred clinically as the Vitreo-retinal Interface (VRI).

# concept[].definition
Image that illustrates the OCT structural reflectance within the vitreous. Generated from the OPT structural volume with pixels approximately from a selected location that is anterior to ILM, to ILM. This space/potential space is referred clinically as the Vitreo-retinal Interface (VRI).

# concept[].definition
Image that illustrates the OCT vasculature flow within the RNFL around the optic disk. Generated from the OPT flow volume with pixels approximately from ILM to the outer boundary of the RNFL.

# concept[].display
Radial peripapillary structural reflectance map

# concept[].definition
Image that illustrates the OCT structural reflectance within the RNFL around the optic disk. Generated from the OPT structural volume with pixels approximately from ILM to the outer boundary of the RNFL.

# concept[].definition
Image that illustrates the vasculature flow within the anterior layers of retina. Generated from the OPT flow volume with pixels approximately from ILM to ganglion cell layer/inner plexiform layer (GCL/IPL).

# concept[].display
Superficial retina structural reflectance map

# concept[].definition
Image that illustrates the OCT structural reflectance within the anterior layers of retina. Generated from the OPT structural volume with pixels approximately from ILM to ganglion cell layer/inner plexiform layer (GCL/IPL).

# concept[].definition
Image that illustrates the vasculature flow in the capillaries that connect the superficial and deeper capillary beds. Generated from the OPT flow volume with pixels approximately at the level of the IPL. Sometimes referred to as the intermediate retina flow.

# concept[].definition
Image that illustrates the OCT structural reflectance in the capillaries that connect the superficial and deeper capillary beds. Generated from the OPT structural volume with pixels approximately at the level of the IPL. Sometimes referred to as the intermediate retina flow.

# concept[].definition
Image that illustrates the vasculature flow at the level of the plexiform layers within the retina. Generated from the OPT flow volume with pixels approximately from inner plexiform layer (IPL) to outer plexiform layer (OPL).

# concept[].definition
Image that illustrates the structural reflectance at the level of the plexiform layers within the retina. Generated from the OPT structural volume with pixels approximately from inner plexiform layer (IPL) to outer plexiform layer (OPL).

# concept[].definition
Image that illustrates the vasculature flow at the level of the posterior layers of the retina (outer retina). Generated from the OPT flow volume with pixels approximately in the translucent layers, from OPL to ISe. Sometimes referred to as flow in the deep avascular structure. Note For normal eyes, this image would not show detectable vascular flow.

# concept[].definition
Image that illustrates the structural reflectance at the level of the posterior layers of the retina (outer retina). Generated from the OPT structural volume with pixels approximately in the translucent layers, from OPL to ISe.

# concept[].definition
Image that illustrates the vasculature flow at the level of the chroriocapillaris. Generated from the OPT flow volume with pixels approximately below the retinal pigment epithelium (RPE) encompassing the thickness of choriocapillaris.

# concept[].definition
Image that illustrates the structural reflectance at the level of the chroriocapillaris. Generated from the OPT structural volume with pixels approximately below the retinal pigment epithelium (RPE) encompassing the thickness of choriocapillaris.

# concept[].definition
Image that illustrates the vasculature flow at the level of the choroid. Generated from the OPT flow volume with pixels approximately below RPE, encompassing the thickness of choroid.

# concept[].definition
Image that illustrates the structural reflectance at the level of the choroid. Generated from the OPT structural volume with pixels approximately below RPE, encompassing the thickness of choroid.

# concept[].definition
Image that illustrates the vasculature flow at the entire posterior segment, including retina and choroid. Generated from the OPT flow volume with pixels encompassing the entire OCT scan.

# concept[].definition
Image that illustrates the structural reflectance from the entire posterior segment, including retina and choroid. Generated from the OPT structural volume with pixels encompassing the entire OCT scan.

# concept[].definition
A series of densely spaced, parallel B-scans of the same length covering an area.

# concept[].definition
A series of sparsely spaced, parallel B-scans of the same length covering an area.

# concept[].definition
A series of B-scans arranged in a radial pattern of the same length covering an area.

# concept[].definition
A pair of horizontal and vertical B-scans in a cross pattern.

# concept[].definition
A series of concentric circular pattern B-scans with various diameters.

# concept[].definition
A series of concentric circular pattern B-scans with various diameters combined with a series of raster B-scan patterns.

# concept[].definition
A series of concentric circular pattern B-scans with various diameters combined with a series of radial B-scan patterns.

# concept[].definition
A series of vertical and horizontal B-scans.

# concept[].definition
Retinal surface located approximately at the outer boundary of the retinal nerve fiber layer (RNFL).

# concept[].definition
Retinal surface approximately at the outer boundary of the Ganglion Cell Layer (GCL).

# concept[].definition
Retinal surface located approximately at the outer boundary of the Inner Plexiform Layer (IPL).

# concept[].definition
Retinal surface located approximately at the outer boundary of the Inner Nuclear Layer (INL).

# concept[].definition
Retinal surface located approximately at the outer boundary of the Outer Plexiform Layer (OPL).

# concept[].definition
Retinal surface located approximately at the outer boundary of the Henle Fiber Layer (HFL) when present.

# concept[].display
Surface between Inner and Outer Segments of the photoreceptors

# concept[].definition
Retinal surface approximately located at the boundary between the Inner Segments and Outer Segments of the photoreceptors.

# concept[].display
Surface of the interdigitation zone between retina and RPE

# concept[].definition
Retinal surface located approximately at the retina-RPE interdigitation zone when present.

# concept[].definition
Inner surface of the Retinal Pigment Epithelium (RPE).

# concept[].definition
Segmentation surface located approximately at the center of the Retinal Pigment Epithelium (RPE).

# concept[].definition
Outer surface of the Retinal Pigment Epithelium (RPE).

# concept[].definition
Retinal surface located approximately at the outer boundary of the Bruch’s Membrane (BM).

# concept[].definition
Retinal surface located approximately at the choroid-sclera interface (SC).

# concept[].definition
Retinal surface located approximately at the outer boundary of the choriocapillaris (CC).

# concept[].definition
Values are derived from performing analysis on OCT B-scans

# concept[].definition
OCT angiography method that utilizes a one-sided ratio on a pixel by pixel basis between various combinations of B-scan repetitions. The ratio is inverted when necessary such that values are less than or equal to one. Individual ratio calculations are averaged or combined across eligible frame combinations for each pixel in the OCT image.

# concept[].definition
OCT angiography method that utilizes a one-sided ratio on a pixel by pixel basis between various combinations of B-scan repetitions. The ratio is inverted when necessary such that values are greater than or equal to one. Individual ratio calculations are averaged or combined across eligible frame combinations for each pixel in the OCT image.

# concept[].definition
Image that illustrates the vascular flow within the posterior layers of the retina, approximately from the posterior border of the outer plexiform layer (OPL) to the level of Bruch’s Membrane (BM). For normal eyes, this image would not show detectable vascular flow.

# concept[].definition
Image that illustrates the structural reflectance within the posterior layers of the retina, approximately from the outer plexiform layer (OPL) to the level of Bruch’s Membrane (BM).

# concept[].definition
Image that illustrates the vascular flow within the anterior layers of retina, approximately from the posterior border of the retinal nerve fiber layer (RNFL) to the inner plexiform layer (IPL).

# concept[].definition
Image that illustrates the structural reflectance within the anterior layers of retina, approximately from the posterior border of the retinal nerve fiber layer (RNFL) to inner plexiform layer (IPL).

# concept[].definition
Image that illustrates the vascular flow within the plexiform layers of the retina, approximately from within the inner Nuclear layer (INL) to posterior border of the outer plexiform layer (OPL)

# concept[].definition
Image that illustrates the structural reflectance within the plexiform layers of the retina, approximately from within the Inner Nuclear Layer (INL) to posterior border of the outer plexiform layer (OPL).

# concept[].definition
Image that illustrates the vascular flow within the retinal nerve fiber layer (RNFL), approximately from inner limiting membrane (ILM) to the outer boundary of the RNFL.

# concept[].definition
Image that illustrates the structural reflectance within the retinal nerve fiber layer (RNFL), approximately from inner limiting membrane (ILM) to the outer boundary of the RNFL.

# concept[].definition
Image that illustrates the vascular flow within a volume selected by the user

# concept[].definition
Image that illustrates the structural reflectance within a volume selected by the user

# concept[].definition
Image that illustrates the vasculature flow within the posterior layers of the retina (including the outer retina), approximately from the posterior boundary of the outer plexiform layer (OPL) to the inner choriocapillaris (CC).

# concept[].definition
Image that illustrates the structural reflectance within the posterior layers of the retina (including the outer retina), approximately from posterior boundary of the outer plexiform layer (OPL) to the inner choriocapillaris (CC).

# concept[].definition
Inner surface of the retinal ellipsoid zone, also known as the photoreceptor inner segment/outer segment (IS/OS) junction

# concept[].definition
Segmentation surface located approximately midway between the inner and outer surfaces of the retinal ellipsoid zone

# concept[].definition
Outer surface of the retinal ellipsoid zone, also known as the photoreceptor inner segment/outer segment (IS/OS) junction

# concept[].display
Inner surface of the interdigitation zone

# concept[].definition
Inner surface of the retinal interdigitation zone

# concept[].display
Outer surface of the interdigitation zone

# concept[].definition
Outer surface of the retinal interdigitation zone

# concept[].definition
Report title for the report of estimated absorbed energy from ionizing radiation to a patient.

# concept[].definition
Estimate of absorbed energy from ionizing radiation.

# concept[].definition
Name used to identify a radiation dose estimate.

# concept[].definition
A mathematical description of a patient model for estimating radiation dose that describes or is thought of as having a human form or human attributes.

# concept[].definition
Boundary based representation of the model for the estimation of radiation transport and absorbed dose in materials.

# concept[].definition
Normalized Mean Glandular Dose (DgN) is the conversion value used to calculate the absorbed dose from radiation to the fibroglandular tissue component of the breast from the exposure in air.

# concept[].definition
The size of a patient in the anterior-posterior dimension.

# concept[].definition
The size of a patient in the lateral dimension.

# concept[].definition
Conversion factor for Size Specific Dose Estimate (SSDE) calculations from CTDIvol.

# concept[].definition
Scattering of radiation in a direction opposite to that of the incident radiation.

# concept[].definition
The description of the representation of the estimated absorbed energy to an organ, a set of organs or the whole body, e.g., surface segmentation, mesh, parametric map, RT dose , Secondary Capture SOP Instances, etc.

# concept[].definition
The form of the representation used to describe the distribution of the radiation dose.

# concept[].definition
The absorbed energy data estimated by the method.

# concept[].definition
The methodology and parameters used to estimate the radiation dose to an organ, the whole body or a phantom.

# concept[].definition
The type of model used to define the shape, size, location of objects, etc. to represent a patient or phantom for use in radiation transport analysis.

# concept[].definition
A simple object (e.g., cylinder) used to model a patient or organ.

# concept[].definition
The type of model used to estimate energy transport and absorbed dose in materials.

# concept[].definition
A model that uses geometrical shapes for the estimation of radiation transport and absorbed dose in materials.

# concept[].definition
A model that uses volumetric elements for the estimation of radiation transport and absorbed dose in materials.

# concept[].definition
A model that uses a mesh structure representation for the estimation of radiation transport and absorbed dose in materials.

# concept[].definition
A model that uses surfaces of a non-uniform rational B-spline (NURBS) based representation for the estimation of radiation transport and absorbed dose in materials.

# concept[].definition
The data from the model used to estimate radiation dose to a patient or organ.

# concept[].definition
Rationale or reference to the methodology for the model used in the estimation of radiation dose.

# concept[].definition
The demographics for which the patient model used by the radiation dose estimation method is intended.

# concept[].definition
The minimum age used in the patient model in the radiation dose estimation method.

# concept[].definition
The maximum age used in the patient model in the radiation dose estimation method.

# concept[].definition
A material placed in the radiation beam that is used to completely attenuate the beam in a specific region of the field of view.

# concept[].definition
Ratio of the absorbed dose at a given depth in tissue to the absorbed dose at the same point in air.

# concept[].definition
The parameters used in the algorithms for determining the radiation dose to a patient, organs, or any material.

# concept[].definition
Reference to the SOP Instance that describes the parameters and values used in the algorithms for determining the radiation dose to a patient, organs, or any material.

# concept[].definition
The sex used in the patient model in the radiation dose estimation method.

# concept[].definition
The minimum weight used in the patient model in the radiation dose estimation method.

# concept[].definition
The minimum height used in the patient model in the radiation dose estimation method.

# concept[].definition
The maximum weight used in the patient model in the radiation dose estimation method.

# concept[].definition
The maximum height used in the patient model in the radiation dose estimation method.

# concept[].definition
Reference to the Spatial Registration instance or Deformable Spatial Registration instance.

# concept[].definition
Name of the method used to register the frame of reference for two or more sets of data.

# concept[].definition
Reference to Spatial Fiducials SOP Instance.

# concept[].definition
A factor used to make an adjustment to a calculation to account for deviations.

# concept[].definition
A value used in a mathematical function to create a curve or a function that approximates a set of data.

# concept[].definition
A value used to describe the uniformity or composition of data or a material that relates to the same degree of variability.

# concept[].definition
The spatial registration used in the patient model in the radiation dose estimation method.

# concept[].definition
Attenuator in the radiation beam that may alter the estimated radiation dose to the patient, organs, or phantoms.

# concept[].definition
The type of object in the radiation beam that may alter the estimated radiation dose to the patient, organs, or phantoms.

# concept[].definition
The table a patient is sitting, standing, or lying on and that is in the radiation beam such that it may alter the estimated radiation dose to the patient, organs, or phantoms.

# concept[].definition
The core material of a table a patient is sitting, standing, or lying on and that is in the radiation beam such that it may alter the estimated radiation dose to the patient, organs, or phantoms.

# concept[].definition
The outer shell of a table a patient is sitting, standing, or lying on and that is in the radiation beam such that it may alter the estimated radiation dose to the patient, organs, or phantoms.

# concept[].definition
The padding on a table a patient is sitting, standing, or lying on and that is in the radiation beam such that it may alter the estimated radiation dose to the patient, organs, or phantoms.

# concept[].definition
Parameters used in mathematical, simulation, or empirical calculations for radiation dose estimation.

# concept[].definition
The equivalent material used to estimate the reduction in radiation intensity.

# concept[].definition
An explanation of the actual attenuator material used in the estimation of radiation dose.

# concept[].definition
The thickness of a specified material that provides the same attenuation as the actual attenuator.

# concept[].definition
The stored data from the model used to represent the X-Ray beam attenuator.

# concept[].definition
Model of the attenuator used in the estimation of radiation dose.

# concept[].definition
Reference to the methodology or rationale for the model of the beam attenuator used in the estimation of radiation dose.

# concept[].display
X-Ray Beam Attenuator Model Registration

# concept[].definition
Spatial registration of the beam attenuator model.

# concept[].definition
The container for the radiation dose estimation methods and parameters.

# concept[].definition
Type of method used to estimate the radiation dose to a patient, organs or phantoms.

# concept[].definition
Algorithms that use a table of values indexed by a key.

# concept[].definition
Algorithms that use mathematical models that have a deterministic result.

# concept[].definition
Algorithms that use mathematical models that use parameters derived from observation.

# concept[].display
Radiation Dose Estimate Method Reference

# concept[].definition
A reference to the methodology or rationale for the estimation methodology used for the estimation of radiation dose.

# concept[].definition
Representation of radiation dose of equal intensity as a surface, curve, or line.

# concept[].definition
Representation of radiation dose intensity at the surface on the skin.

# concept[].definition
Representation of radiation dose as a 3D shape or object.

# concept[].definition
Representation of the change in radiation dose with respect to the change in another variable. Often represented as a change with respect to time or distance.

# concept[].definition
Material that is in radiation beam that is used to provide physical support to the patient or other objects.

# concept[].definition
A model for estimating radiation dose defined from the actual patient anatomy or characteristics.

# concept[].definition
Radiation dose represented as a distribution of points.

# concept[].definition
The measured amount of energy that is deposited in a material by ionizing radiation.

# concept[].definition
A computational representation of a human body or other object used to simulate the attenuation of radiation in human tissue.

# concept[].display
Reference to Uncertainty Determination Method

# concept[].definition
A reference to the methodology used to determine the uncertainty in the estimation of radiation dose.

# concept[].definition
Absorbed dose to a tissue or organ multiplied by a quality factor to normalize the dose to the type of radiation that is depositing the dose.

# concept[].definition
Energy from ionizing radiation absorbed per unit mass.

# concept[].definition
A factor that is used to make an adjustment to a calculation to normalize the data.

# concept[].definition
A factor that is used to make an adjustment to a calculation to translate or move the data in a defined manner.

# concept[].definition
The amount of a specific tissue content, either mass or volume, in a material.

# concept[].definition
A correction factor for a measurement of distance or location.

# concept[].definition
A numerical ratio to express a measurement from one unit to another unit.

# concept[].definition
The largest absorbed radiation dose amount estimated.

# concept[].definition
The smallest absorbed radiation dose value estimated.

# concept[].definition
The average value of the absorbed radiation dose estimated.

# concept[].definition
The absorbed radiation dose value estimated that occurs most frequently.

# concept[].definition
The largest equivalent radiation dose value estimated.

# concept[].definition
The smallest equivalent radiation dose value estimated.

# concept[].definition
The average value of the equivalent radiation dose estimated.

# concept[].definition
The equivalent radiation dose value estimated that occurs most frequently.

# concept[].definition
The central value of the absorbed radiation dose estimated.

# concept[].definition
The central value of the equivalent radiation dose estimated.

# concept[].definition
This acquisition of data (e.g., for constructing an image) is a repeat of an earlier acquisition that was for some reason unsatisfactory.

# concept[].definition
The reason that data (e.g., for constructing an image) was acquired again.

# concept[].definition
The acquired data is unsatisfactory because the patient moved.

# concept[].definition
The acquired data is unsatisfactory because the contrast timing was not adequate.

# concept[].definition
The protocol is appropriate for the indications recorded in the protocol instance.

# concept[].definition
The protocol is consistent with the regulatory product labeling of the device recorded in the protocol instance.

# concept[].definition
The protocol is approved for use at the institution recorded in the protocol instance.

# concept[].definition
The protocol is approved for use in the clinical trial recorded in the protocol instance.

# concept[].definition
The protocol is specifically approved for use on pregnant patients.

# concept[].definition
The protocol is appropriate for execution on the device recorded in the protocol instance (which may identify an individual device by serial number or may identify a family of devices). I.e. the protocol has incorporated model-specific parameters and optimizations as necessary.

# concept[].definition
The protocol specifies parameters that are within the operational limits of the device recorded in the protocol instance. I.e. execution of the protocol is not expected to damage or exceed the operational limits of the device.

# concept[].definition
The protocol is optimized for the characteristics of the specific instance of the device recorded in the protocol instance. I.e. the protocol has incorporated model-specific parameters and optimizations as necessary.

# concept[].definition
The protocol is explicitly disapproved, or approval of the protocol has been withdrawn.

# concept[].definition
The protocol is no longer to be used. E.g. it has been replaced by another protocol.

# concept[].definition
The protocol is approved for use in experimental procedures.

# concept[].definition
The protocol is disapproved for use in experimental procedures.

# concept[].definition
The protocol is understood to be eligible for reimbursement by a given payer.

# concept[].display
Eligible for reimbursement on per patient basis

# concept[].definition
The protocol is understood to be eligible for reimbursement on a per patient basis by a given payer.

# concept[].definition
The protocol is understood to be ineligible for reimbursement by a given payer.

# concept[].display
Disapproved for use on pregnant patients

# concept[].definition
The protocol is explicitly disapproved for use on pregnant patients.

# concept[].definition
The protocol is inappropriate for execution on the device recorded in the protocol instance (which may identify an individual device by serial number or may identify a family of devices).

# concept[].display
Outside operational limits of the device

# concept[].definition
The protocol specifies parameters that are not within the operational limits of the device recorded in the protocol instance. I.e. execution of the protocol may damage or exceed the operational limits of the device.

# concept[].definition
The protocol is not optimized for the characteristics of the specific instance of the device recorded in the protocol instance.

# concept[].definition
The protocol is inappropriate for the indications recorded in the protocol instance.

# concept[].display
Inconsistent with labeling of the device

# concept[].definition
The protocol is inconsistent with the regulatory product labeling of the device recorded in the protocol instance.

# concept[].definition
The protocol is disapproved for use at the institution recorded in the approval instance.

# concept[].display
Disapproved for use in the clinical trial

# concept[].definition
The protocol is disapproved for use in the clinical trial recorded in the protocol instance.

# concept[].definition
The senior ranking radiologist in the organization

# concept[].definition
The chair of a committee tasked with reviewing and approving protocols in the organization.

# concept[].definition
The administrative head of a department that provides radiology services.

# concept[].definition
The senior ranking radiologic technologist in the organization.

# concept[].definition
The senior ranking cardiologist in the organization.

# concept[].definition
A representative of a committee tasked with reviewing and approving protocols in the organization.

# concept[].definition
A representative of a committee tasked with evaluating medical ethics. E.g. Institutional Review Board.

# concept[].definition
A volume of gel that changes physical characteristics when exposed to ionizing radiation.

# concept[].definition
A number of semiconductor devices that generates current when exposed to ionizing radiation. The devices are arranged systematically in a regular pattern.

# concept[].definition
A number of devices that measures charge from the ions produced in a medium when exposed to ionizing radiation. The devices are arranged systematically in a regular pattern.

# concept[].definition
A semiconductor device that generates current when exposed to ionizing radiation.

# concept[].definition
An ion chamber that uses a liquid as the medium.

# concept[].definition
Optically Stimulated Luminescent Dosimeter. It is a crystal that when exposed to green light, emits blue light in proportion to the amount of ionizing radiation it has been exposed to.

# concept[].definition
A device that measures charge from the ions produced in a medium when exposed to ionizing radiation.

# concept[].definition
A semiconductor detector that uses diamond as the medium.

# concept[].definition
A radiophotoluminescence glass dosimeter. It is a solid state cumulative radiation dosimeter usually made of silver-activated phosphate glass. The silver atoms act as radiophotoluminescence centers excited by ionizing radiation. The number of centers excited is proportional to the absorbed dose to the RPLGD.

# concept[].definition
Instances that have been selected for export to a teaching file.

# concept[].definition
Instances that have been selected for export for a clinical trial.

# concept[].definition
The title of a document containing additional teaching file information.

# concept[].definition
Instances that have been selected for export to a research collection.

# concept[].definition
Instances that have been selected for export for publication.

# concept[].display
Delay export until final report is available

# concept[].definition
Delay export until final report is available.

# concept[].display
Delay export until clinical information is available

# concept[].definition
Delay export until clinical information is available.

# concept[].display
Delay export until confirmation of diagnosis is available

# concept[].definition
Delay export until confirmation of diagnosis is available.

# concept[].display
Delay export until histopathology is available

# concept[].definition
Delay export until histopathology is available.

# concept[].display
Delay export until other laboratory results are available

# concept[].definition
Delay export until other laboratory results are available.

# concept[].display
Delay export until patient is discharged

# concept[].definition
Delay export until patient is discharged.

# concept[].display
Delay export until expert review is available

# concept[].definition
Delay export until expert review is available.

# concept[].definition
The category that describes the subject matter of a teaching file.

# concept[].definition
The level of difficult that the material represents.

# concept[].definition
The teaching material is of a primary level of difficulty.

# concept[].definition
The teaching material is of an intermediate level of difficulty.

# concept[].definition
The teaching material is of an advanced level of difficulty.

# concept[].definition
The subject matter pertains to musculoskeletal imaging.

# concept[].definition
The subject matter pertains to pulmonary imaging.

# concept[].definition
The subject matter pertains to cardiovascular imaging.

# concept[].definition
The subject matter pertains to gastrointestinal imaging.

# concept[].definition
The subject matter pertains to genitourinary imaging.

# concept[].definition
The subject matter pertains to neuroimaging .

# concept[].display
Vascular and interventional imaging subject matter

# concept[].definition
The subject matter pertains to vascular and interventional imaging.

# concept[].definition
The subject matter pertains to nuclear medicine imaging.

# concept[].definition
The subject matter pertains to ultrasound imaging.

# concept[].definition
The subject matter pertains to pediatric imaging.

# concept[].definition
The subject matter pertains to breast imaging.

# concept[].definition
The entire Human Readable Form of the Unique Device Identifier as defined by the Issuing Agency.

# concept[].definition
An offset in time from a particular event of significance. In the context of a clinical trial, this is often the time since enrollment, or the baseline imaging study.

# concept[].definition
The type of event to which a temporal offset is relative.

# concept[].definition
A well-known landmark of the equipment that is visible by the operator.

# concept[].definition
An equipment landmark on the X-Ray Table head located on the table top plane, centered in the left-right direction of the table.

# concept[].definition
The X coordinate of the Equipment Landmark in the Table Coordinate System.

# concept[].definition
The Z coordinate of the Equipment Landmark in the Table Coordinate System.

# concept[].definition
A patient fiducial used to establish the patient location relative to equipment.

# concept[].display
Equipment Landmark to Patient Fiducial Z Distance

# concept[].definition
The distance in the Z direction from the Equipment Landmark to the Patient Location Fiducial in the Table Coordinate System. Positive when the direction from the Equipment Landmark to the Patient Location Fiducial lies in the positive Z direction.

# concept[].definition
Angle in the XY plane of the isocenter reference system between the Y axis and a plane containing the Z axis and the X-Ray center beam (deg).

# concept[].definition
Angle, in the plane containing the Z axis of the isocenter reference system and the X-Ray center beam, between the XY plane and the X-Ray center beam (deg).

# concept[].display
Positioner Isocenter Detector Rotation Angle

# concept[].definition
Rotation of the X-Ray detector plane (deg).

# concept[].definition
Position of the X-Ray center beam in the isocenter reference system in the X direction (deg) at the end of an irradiation event.

# concept[].display
Positioner Isocenter Secondary End Angle

# concept[].definition
Position of the X-Ray center beam in the isocenter reference system in the Z direction (deg) at the end of an irradiation event.

# concept[].display
Positioner Isocenter Detector Rotation End Angle

# concept[].definition
Rotation of the X-Ray detector plane (deg) at the end of an irradiation event.

# concept[].definition
Angle of the head-feet axis of the table (deg) relative to the horizontal plane at the end of an irradiation event.

# concept[].definition
Rotation of the table in the horizontal plane (deg) at the end of an irradiation event.

# concept[].definition
Angle of the left-right axis of the table (deg) relative to the horizontal plane at the end of an irradiation event.

# concept[].definition
X position of the Table Reference Point with respect to the Isocenter (mm).

# concept[].definition
Y position of the Table Reference Point with respect to the Isocenter (mm).

# concept[].definition
Z position of the Table Reference Point with respect to the Isocenter (mm).

# concept[].definition
X position of the Table Reference Point with respect to the Isocenter (mm) at the end of an irradiation event.

# concept[].definition
Y position of the Table Reference Point with respect to the Isocenter (mm) at the end of an irradiation event.

# concept[].definition
Z position of the Table Reference Point with respect to the Isocenter (mm) at the end of an irradiation event.

# concept[].definition
The anatomical feature or point of reference on which the reference location is based.

# concept[].definition
Characterizes the geometry of the reference location (e.g., a plane or point).

# concept[].definition
Login name (user ID) of human observer who created the observations.

# concept[].display
Identifier within Person Observer's Role

# concept[].definition
An alphanumeric designator of an individual within a role.

# concept[].definition
The tabulation of gray level run lengths in a particular direction in an image. Abbreviated GLRLM.See .

# concept[].definition
A tabulation of counts of the number of groups of connected voxels with a specific discretized gray level value and size. Abbreviated GLSZM.See .

# concept[].definition
A tabulation of counts of the number of groups (or zones) of linked voxels that share a specific discretised grey level value and possess the same distance to ROI edge. Abbreviated GLDZM.See .

# concept[].display
Neighbourhood Grey Tone Difference Matrix

# concept[].definition
A matrix containing the sum of grey level differences of pixels/voxels with a discretised grey level and average discretised grey level of neighbouring pixels/voxels within a specified Chebyshev distance. Abbreviated NGTDM.See .

# concept[].display
Neighbouring Grey Level Dependence Matrix

# concept[].definition
A tabulation of the counts of dependent (within a specified coarseness parameter) neighbouring discretised grey levels within a specified Chebyshev distance. Abbreviated NGLDM.See .

# concept[].definition
The probability corresponding to the most common gray level co-occurrence in the GLCM. Abbreviated MAX.See Fcm.joint.max in .

# concept[].definition
The gray level weighted sum of joint probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.joint.avg in .

# concept[].definition
The sum of squares of the difference from the joint average of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.joint.var in .

# concept[].definition
The average for the diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.diff.avg in .

# concept[].definition
The variance for the diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.diff.var in .

# concept[].definition
The entropy for the diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.diff.entr in .

# concept[].definition
The average for the cross-diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.sum.avg in .

# concept[].definition
The variance for the cross-diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.sum.var in .

# concept[].definition
The entropy for the cross-diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.sum.entr in .

# concept[].definition
The inverse difference of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.diff in .

# concept[].definition
The normalized inverse difference of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.diff.norm in .

# concept[].display
Inverse Difference Moment Normalized of GLCM

# concept[].definition
The normalized inverse difference moment of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.diff.mom.norm in .

# concept[].definition
The inverse variance of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.var in .

# concept[].definition
The autocorrelation of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.auto.corr in .

# concept[].definition
The cluster tendency of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.clust.tend in .

# concept[].definition
The cluster shade of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.clust.shade in .

# concept[].definition
The cluster prominence of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.clust.prom in .

# concept[].display
First Measure of Information Correlation of GLCM

# concept[].definition
The first measure of information correlation of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.info.corr.1 in .

# concept[].display
Second Measure of Information Correlation of GLCM

# concept[].definition
The second measure of information correlation of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.info.corr.2 in .

# concept[].definition
A measure of the distribution of short runs in a gray level run length matrix. Abbreviated SRE.See Frlm.sre in .

# concept[].definition
A measure of the distribution of long runs in a gray level run length matrix. Abbreviated LRE.See Frlm.lre in .

# concept[].definition
A measure of the distribution of low gray level values in a gray level run length matrix. Abbreviated LGRE.See Frlm.lgre in .

# concept[].definition
A measure of the distribution of high gray level values in a gray level run length matrix. Abbreviated HGRE.See Frlm.hgre in .

# concept[].definition
A measure of the joint distribution of short runs and low gray level values in a gray level run length matrix. Abbreviated SRLGE.See Frlm.srlge in .

# concept[].definition
A measure of the joint distribution of short runs and high gray level values in a gray level run length matrix. Abbreviated SRHGE.See Frlm.srhge in .

# concept[].definition
A measure of the joint distribution of long runs and low gray level values in a gray level run length matrix. Abbreviated LRLGE.See Frlm.lrlge in .

# concept[].definition
A measure of the the joint distribution of long runs and high gray level values in a gray level run length matrix. Abbreviated LRHGE.See Frlm.lrhge in .

# concept[].definition
A measure of the similarity of gray level values throughout the image in a gray level run length matrix. Abbreviated RLM.GLNU.See Frlm.glnu in .

# concept[].display
Gray Level Nonuniformity in Runs Normalized

# concept[].definition
A normalized measure of the similarity of gray level values throughout the image in a gray level run length matrix.See Frlm.glnu.norm in .

# concept[].definition
A measure of the the similarity of the length of runs throughout the image in a gray level run length matrix. Abbreviated RLNU.See Frlm.rlnu in .

# concept[].definition
A normalized measure of the the similarity of the length of runs throughout the image in a gray level run length matrix.See Frlm.rlnu.norm in .

# concept[].definition
A measure of the homogeneity and distribution of runs of an image in a specific direction in a gray level run length matrix. Abbreviated RPC.See Frlm.r.perc in .

# concept[].definition
The variance in runs for the gray levels in a gray level run length matrix.See Frlm.gl.var in .

# concept[].definition
The variance in runs for run lengths in a gray level run length matrix.See Frlm.rl.var in .

# concept[].definition
The entropy of runs in a gray level run length matrix.See Frlm.rl.entr in .

# concept[].definition
A feature that emphasizes small zones from a gray level size zone matrix. Abbreviated SZE.See Fszm.sze in .

# concept[].definition
A feature that emphasizes large zones from a gray level size zone matrix. Abbreviated LZE.See Fszm.lze in .

# concept[].definition
A feature that emphasizes low gray level zones from a gray level size zone matrix. Abbreviated LGZE.See Fszm.lgze in .

# concept[].definition
A feature that emphasizes high gray level zones from a gray level size zone matrix. Abbreviated LGZE.See Fszm.hgze in .

# concept[].definition
A feature that emphasizes small zone sizes and low gray levels from a gray level size zone matrix. Abbreviated SZLGE.See Fszm.szlge in .

# concept[].definition
A feature that emphasizes small zone sizes and high gray levels from a gray level size zone matrix. Abbreviated SZHGE.See Fszm.szhge in .

# concept[].definition
A feature that emphasizes large zone sizes and low gray levels from a gray level size zone matrix. Abbreviated LZLGE.See Fszm.lzlge in .

# concept[].definition
A feature that emphasizes large zone sizes and high gray levels from a gray level size zone matrix. Abbreviated LZHGE.See Fszm.lzhge in .

# concept[].definition
The distribution of zone counts over the gray values in a gray level size zone matrix. Abbreviated SZM.GLNU.See Fszm.glnu in .

# concept[].display
Gray Level Nonuniformity of Zone Counts Normalized

# concept[].definition
The normalized distribution of zone counts over the gray values in a gray level size zone matrix.See Fszm.glnu.norm in .

# concept[].definition
The distribution of zone counts over the different zone sizes in a gray level size zone matrix. Abbreviated ZSNU.See Fszm.zsnu in .

# concept[].definition
The normalized distribution of zone counts over the different zone sizes in a gray level size zone matrix.See Fszm.zsnu.norm in .

# concept[].definition
The fraction of the number of realised zones relative to the maximum number of potential zones in a gray level size zone matrix. Abbreviated ZPERC.See Fszm.z.perc in .

# concept[].definition
The variance ithe variance in zone counts for the gray levels in a gray level size zone matrix.See Fszm.gl.var in .

# concept[].definition
The variance in zone counts for the different zone sizes in a gray level size zone matrix.See Fszm.zs.var in .

# concept[].definition
The entropy of zone sizes in a gray level size zone matrix.See Fszm.zs.entr in .

# concept[].definition
Person who looks at and interprets medical images against defined criteria for the purpose of establishing eligibility of the subject of said images to be enrolled in a research experiment or a clinical trial.

# concept[].definition
Person who designates locations on medical images (such as the location of lesions) for other persons or devices to measure or interpret.

# concept[].definition
Person who reviews medical images to evaluate the compliance of said images with quality criteria.

# concept[].definition
Person who reviews results derived from medical images to evaluate the compliance of said results with quality criteria.

# concept[].definition
A reference to a predecessor model that has been edited to produce the current model.For example: inclusion of more organs, completion of a partial segmentation, insertion of a bisection plane to allow interior inspection, or addition of support material.

# concept[].definition
A reference to a predecessor model that contributed to the creation of the current combined model.This includes simple assembly of discrete pieces as well as more complex combination. For example: by Boolean mathematical and similar operations.

# concept[].definition
Intended for educational purposes.For example: patient or care-giver education/informed consent, or training residents and fellows.

# concept[].definition
Intended to be used to assist with procedure planning

# concept[].definition
Intended to be used to manufacture a patient-matched tool that is employed during a medical procedure.For example: drill/cutting guides, immobilizers, radiation shields, and plate bending templates.

# concept[].definition
Intended to be used to manufacture a fully external prosthetic/orthotic

# concept[].definition
Intended to be used to manufacture a wholly or partially internal implant

# concept[].definition
Intended to be used for simulation and/or practice of a surgery or other medical procedure. "Simulation" is not used for patient-matched simulation, as this would be covered by "Diagnostic Intent" or "Planning Intent".

# concept[].definition
A 3D manufacturing model derived from ultrasound imaging.

# concept[].definition
A 3D manufacturing model derived from images from multiple different modalities.

# concept[].definition
A 3D manufacturing model derived from measurements made from photographs.

# concept[].definition
A 3D manufacturing model derived from laser scanning measurements.

# concept[].definition
The fraction of fat present, derived using Dixon or other techniques.

# concept[].definition
Water/Fat In Phase signal, derived using Dixon or other techniques.

# concept[].definition
Water/Fat Out of phase signal, derived using Dixon or other techniques.

# concept[].definition
The fraction of water present, derived using Dixon or other techniques.

# concept[].definition
Estimation of the course of fiber tracts by analysis of anisotropic diffusion.

# concept[].definition
Images that have been used in the treatment planning process.

# concept[].definition
Images that have been used for dose calculation in the treatment planning process.

# concept[].definition
Images that have been acquired during a treatment session.

# concept[].display
Image used as Reference Image for Treatment

# concept[].definition
Images that are used in a treatment session as reference images to position the patient.

# concept[].definition
Registrations that have been used in the treatment planning process

# concept[].definition
Registrations that have been created in the execution of a treatment session.

# concept[].definition
A coil-shaped marker visible in an image.

# concept[].definition
A cylinder-shaped marker visible in an image.

# concept[].definition
A thread or rod-shaped marker visible in an image.

# concept[].definition
A marker that receives a radio signal and transmits a response.

# concept[].definition
A marker containing a substance that produces a distinctive signal on MR images.

# concept[].definition
Infrared reflecting external marker, e.g., attached to skin or stereotactic frame.

# concept[].definition
Visible light reflecting external marker, e.g., attached to skin or stereotactic frame.

# concept[].definition
The average atomic number for a compound or mixture of materials. There are a variety of methods for estimating this value for a given compound.

# concept[].definition
Modified pixel values within the Hounsfield Unit Value range.

# concept[].definition
Each real-world value mapped pixel represents a certain value for a specified material (the exact interpretation of the value range has to be defined by the user).

# concept[].definition
Each real-world value mapped pixel value represents a property the attenuation of a material such as attenuation, concentration or density.

# concept[].definition
Image with the attenuation contribution of one or more materials removed. For pixels that did not contain any of the removed material(s), the pixel values are unchanged.

# concept[].definition
Image where pixel values have been modified to highlight a certain target material by partially suppressing the background and/or by enhancing the modified material.

# concept[].definition
Image where pixel values have been modified to partially suppress the modified material (opposite to Material Highlighted image).

# concept[].definition
Image where pixels are recalculated by a vendor-specific method.

# concept[].definition
Each real-world value mapped pixel represents a fraction, by volume, occupied by the material.

# concept[].definition
Each real-world value mapped pixel represents a fraction, by mass, occupied by the material.

# concept[].definition
An objective to achieve a radiation dose which is greater than or equal to the specified radiation dose at the surface of a volume.

# concept[].definition
An objective to achieve a radiation dose which is less than or equal to the specified radiation dose at the surface of a volume.

# concept[].definition
An objective to achieve a radiation dose which is greater than or equal to the specified radiation dose throughout a volume.

# concept[].definition
An objective to achieve a radiation dose which is less than or equal to the specified radiation dose throughout a volume.

# concept[].definition
An objective to achieve a mean radiation dose over the volume which is greater than or equal to the specified radiation dose.

# concept[].definition
An objective to achieve a mean radiation dose over the volume which is less than or equal to the specified radiation dose.

# concept[].definition
An objective to achieve an equivalent uniform dose (EUD) which is greater than or equal to the specified radiation dose.

# concept[].definition
An objective to achieve an equivalent uniform dose (EUD) which is less than or equal to the specified radiation dose.

# concept[].definition
An objective to achieve a radiation dose which is equal to the specified radiation dose throughout the volume.

# concept[].definition
An objective to achieve a conformity index which is greater than or equal to the specified conformity index for a radiation dose which is equal to the specified radiation dose throughout the volume.Minimum Conformity Index as defined in , page 335.

# concept[].definition
An objective to achieve a healthy tissue conformity index which is greater than or equal to the specified healthy tissue conformity index for a radiation dose which is equal to the specified radiation dose throughout the volume.Minimum Healthy Tissue Conformity Index as defined in , page 335.

# concept[].definition
An objective to achieve a conformation number which is greater than or equal to the specified conformation number greater for a radiation dose which is equal to the specified radiation dose throughout the volume.Minimum Conformation Number as defined in , page 335.

# concept[].definition
An objective to achieve a homogeneity index which is less than or equal to the specified homogenity index for a radiation dose which is equal to the specified radiation dose throughout the volume.Maximum Homogeneity Index as defined in , page 335.

# concept[].display
Minimum Percent Volume at Radiation Dose

# concept[].definition
An objective to achieve a radiation dose which is greater than or equal to the specified radiation dose for at least a specified volume percentage.

# concept[].display
Maximum Percent Volume at Radiation Dose

# concept[].definition
An objective to achieve a radiation dose which is less than or equal to the specified radiation dose for at least a specified "volume percentage.

# concept[].display
Minimum Absolute Volume at Radiation Dose

# concept[].definition
An objective to achieve a radiation dose which is greater than or equal to the specified radiation dose for at least a specified volume size.

# concept[].display
Maximum Absolute Volume at Radiation Dose

# concept[].definition
An objective to achieve a radiation dose which is less than or equal to the specified radiation dose for at least a specified volume size.

# concept[].definition
An objective to minimize the total Meterset.

# concept[].definition
The radiation dose value for a Dosimetric Objective.

# concept[].definition
The specified volume size of an anatomical region in a Dosimetric Objective.

# concept[].definition
The percentage which represents a fractional parameter used by a Dosimetric Objective.

# concept[].definition
Free text note describing characteristics of the radiation.

# concept[].definition
Free text note describing the devices and techniques used to shape the radiation beam.

# concept[].definition
Free text note to describe suggestions or advice to treatment planning.

# concept[].definition
Free text note describing additional activities that address individual patient needs.

# concept[].definition
Free text note describing the process to position the patient for the procedure.

# concept[].definition
Free text note describing management of patient motion during the radiation treatment.

# concept[].definition
Free text note describing the setup of the patient on the patient support device(s).

# concept[].definition
Free text note describing previously delivered treatments.

# concept[].definition
Free text note describing the intended use of images for planning.

# concept[].definition
Free text note describing how delivery is to be verified.

# concept[].definition
Free text note describing preferred simulation procedures.

# concept[].definition
Particle used for Radiotherapy treatment.

# concept[].definition
Energy of the Radiotherapy treatment beam.

# concept[].definition
Free text note describing the procedure "for acquiring and applying information about patient position.

# concept[].definition
Free text note describing the Quality Assurance Process for the treatment of the patient.

# concept[].definition
Particle for a radiotherapeutic treatment using beams of energetic protons, positive ions or other particles.

# concept[].definition
Isotope for a radiotherapeutic treatment where a decaying radiation source is placed inside or next to a target area, called Brachytherapy.

# concept[].definition
Free text note describing how adaptive radiotherapy is to be performed.

# concept[].definition
Isotope for a radiotherapeutic treatment where a decaying radiation source is placed outside the body.

# concept[].definition
Volume containing tissues to be irradiated to a specified radiation dose, typically encompassing a tumor, and possibly including surrounding subclinical disease, and margin(s) to account for uncertainties in patient positioning and organ motion.

# concept[].definition
Non-target structure or volume used when calculating the radiation dose, e.g., during an optimzation process. This may be a structure whose proximity to the target and/or radiosensitivity restrict the radiation dose deliverable to the target.

# concept[].definition
Points or volumes used as spatial references, e.g., treatment or imaging device isocenter or fiducial markers.

# concept[].definition
Device used to reproducibly position or limit the motion of a patient or portion of a patient during treatment.

# concept[].definition
Device used to deliver Brachtherapy treatments. This includes both devices containing radioactive sources (seeds, eye plaques) and devices used to position radioactive sources (source applicators, channels etc.).

# concept[].definition
A volume that does not represent a named physical entity.

# concept[].definition
A volume representing the external shape of the patient body used in radiotherapeutic procedures.

# concept[].definition
A volume that does not correspond to an identifiable physical entity and has user specified boundaries.

# concept[].definition
Clinical Target Volume encompassing diseased lymph node(s) , with margin to include surrounding sub-clinical disease as defined in .

# concept[].definition
Clinical Target Volume encompassing primary tumor(s) , with margin to include surrounding sub-clinical disease as defined in .

# concept[].definition
Gross Tumor Volume encompassing diseased lymph nodes as defined in .

# concept[].definition
Gross Tumor Volume encompassing primary tumor(s) as defined in .

# concept[].definition
Planning Target Volume encompassing a nodal CTV, with margin to account for uncertainty in patient positioning and organ motion as defined in .

# concept[].definition
Planning Target Volume encompassing a primary CTV, with margin to account for uncertainty in patient positioning and organ motion as defined in .

# concept[].definition
Entire Body as a target volume for radiotherapy treatment. The usual term for a treatment technique irradiating this target is Full Body Irradiation.

# concept[].definition
Internal Target Volume encompassing the CTV, with margin to account for internal motion, often delineated using multiple images, e.g., acquired over a breathing cycle, cardiac cycle, etc, as defined in .

# concept[].definition
Volume encompassing the Organ At Risk (Planning organ at Risk Volume (PRV)) with margin to account for uncertainty in patient positioning and organ motion as defined in .

# concept[].definition
Volume to which delivered radiation dose should be minimized or limited as defined in .

# concept[].definition
Volume enclosed by an isodose surface appropriate to achieve the purpose of treatment (e.g., tumor eradication or palliation) as defined in .

# concept[].definition
Normal tissue that receives undesired radiation and may be damaged by the radiation treatment as defined in . The treatment is typically planned to limit the radiation dose to such an organ.

# concept[].definition
A volume used to express dosimetric constraints for shaping the radiation dose distribution.

# concept[].definition
A volume surrounding the target to achive a high radiation dose gradient using a low radiation dose constraint.

# concept[].definition
A point for which a specific radiation dose value is chosen. The rest of the radiation dose distribution is normalized against" this value.

# concept[].definition
A point at which the radiation dose is observed.

# concept[].definition
Volume for which radiation dose is calculated.

# concept[].definition
Volume in which the interaction of radiation with matter is taken into account.

# concept[].definition
The external boundary of patient tissue without additional devices.

# concept[].definition
The external boundary of patient tissue plus devices that may be attached or adjacent to the body (such as Bolus, Patient Support Devices, Patient Immobilization Devices).

# concept[].definition
Point at which the patient is initially positioned prior to any other positioning procedure.

# concept[].definition
A reference point used for patient setup based on room lasers.

# concept[].definition
A reference point used for patient setup based on movable lasers.

# concept[].definition
A reference point at which patient position verification references are acquired.

# concept[].definition
A point representing the machine isocenter.

# concept[].definition
The Conformity Index for a Dosimetric Objective as defined in , page 335.

# concept[].display
Specified Healthy Tissue Conformity Index

# concept[].definition
The Healthy Tissue Conformity Index for a Dosimetric Objective as defined in , page 335.

# concept[].definition
The Conformation Number for a Dosimetric Objective as defined in , page 335.

# concept[].definition
The Homogeneity Index for a Dosimetric Objective as defined in , page 335.

# concept[].definition
Source applicator used in brachytherapy treatment delivery

# concept[].definition
Channel shield device used in brachytherapy treatment delivery

# concept[].definition
Channel device used in brachytherapy treatment delivery

# concept[].definition
A logical combination of two or more volumes for which the combination is not classified.

# concept[].definition
Ratio of the mass density of a material relative to the mass density of water.

# concept[].definition
Ratio of the electron density of a material relative to the electron density of water.

# concept[].definition
The average atomic number of a material.

# concept[].definition
Ratio of effective atomic number to mass (AMU -1) for a material.

# concept[].definition
Ratio of the linear stopping power of a material to the linear stopping power of water.

# concept[].definition
An energy value which qualifies a quantity or parameter whose value is defined in respect to this energy.

# concept[].definition
Linear Cell Kill Factor (α) as defined in J. Deacon et al (Rad. Onc 2(4) : 317-323, 1984), page 318-

# concept[].definition
Quadratic Cell Kill Factor (β) as defined in J. Deacon et al (Rad. Onc 2(4) : 317-323, 1984), page 318.

# concept[].display
High Dose Fraction Linear Cell Kill Factor

# concept[].definition
High Dose Fraction Linear Cell Kill Factor (γ) as defined in Frederick W. McKenna et (J. Med. Phys, 36(2) : 100-106, 2011), page 102.

# concept[].definition
Half-time for Tissue Repair as defined in R Singh R, et al. (Medical Dosimetry 28(4) : 225-259, 2003), page 256.

# concept[].definition
High Dose Fraction Transition Dose as defined in Astrahan, M. (Med. Phys., 35(9) : 4161-4172, 2008), page 4164.

# concept[].definition
The atomic number of an element, i.e. the number of protons found in the nucleus of an atom.

# concept[].display
Elemental Composition Atomic Mass Fraction

# concept[].definition
The fractional weight of the element in a compound.

# concept[].definition
Tissue-specific parameter that describes the volume effect of radiation dose delivered to a volume.See AAPM Report 166 (http://www.aapm.org/pubs/reports/RPT_166.pdf) for additional information.

# concept[].definition
A treatment consisting of a single treatment fraction, e.g., for stereotactic treatments.

# concept[].definition
A treatment consisting of a one treatment fraction per day, typically 1.8-2.0 Gy per treatment fraction.

# concept[].definition
A treatment consisting of a reduced number of treatment fractions relative to a standard fractionation, typically with a higher radiation dose per fraction.

# concept[].definition
A treatment consisting of an increased number of fractions relative to a standard fractionation, typically two per day with smaller radiation dose per fraction.

# concept[].definition
A treatment consisting of a continuous delivery using a temporary implant.

# concept[].definition
A treatment consisting of a continuous delivery using a permanent implant.

# concept[].definition
A treatment technique in which the field shape and the source position do not change during delivery.

# concept[].definition
A treatment technique in which the field shape does not change during delivery while the source position follows an arc.

# concept[].definition
A treatment technique in which the field shape changes during delivery while the source position follows an arc.

# concept[].definition
A treatment technique in which the field shape does not change during an exposure. Several field shapes may be used in different exposures at the same source position.

# concept[].definition
A treatment technique in which the field shape continously changes during an exposure at the same source position.

# concept[].definition
A treatment technique in which the field shape, gantry speed and radiation dose rate changes during delivery while the source position follows an arc.Volumetric Modulated Arc Therapy (VMAT).

# concept[].definition
A treatment technique in which the field shape continously changes during delivery while the source position follows a continous arc in parallel to a simultaneous patient support movement.

# concept[].definition
A treatment technique in which the field shape and the source position do not change during" delivery while the patient support is moving.

# concept[].definition
A device attached to the tabletop that is also screwed into the skull of the patient's head to position and orient the head in a prescribed geometry relative to the tabletop. The device is commonly known as a "halo".

# concept[].definition
A device that is placed over the patient's face and attached to the tabletop to prevent the patient from moving relative to the tabletop.

# concept[].definition
A device that is placed over the patient's face and neck and attached to the tabletop to prevent the patient from moving relative to the tabletop.

# concept[].definition
A device that is modified by pressure (molded) to fit another object (such as the patient"s anatomy) and then used to control the reproducibility of the patient"s treatment position.

# concept[].definition
A device that is fabricated from a mold of another object (like the patient"s anatomy) and then used to control the reproducibility of the patient"s treatment position.

# concept[].definition
A device placed on the tabletop to support the chest and arms of a patient in a prescribed position and orientation.

# concept[].definition
A device placed beneath a patient to support the whole body in a prescribed position and orientation relative to the table top.

# concept[].definition
A device placed beneath a patient to support a body part in a prescribed position and orientation relative to the table top. It is commonly a bag containing low density polystyrene spheres that becomes semi-hard when vacuum is applied conforming to the bottom surface of the patient.

# concept[].definition
A device placed beneath a patient to support the whole body in a prescribed position and orientation relative to the table top. It is commonly shaped like a hollow half cylinder. The space between the patient and the wall is commonly filled with a dual component foam that hardens conforming to the bottom surface of the patient.

# concept[].definition
A flexible fluid container inserted into the rectum to maintain an immovable geometry during treatment.

# concept[].definition
An intracavity cylinder inserted into the vagina to achieve greater radiation dose control and radiation dose shaping. Radioactive sources are inserted into the cylinder for treatment.

# concept[].definition
A device, typically made of a low temperature alloy, such as Lipowitz"s metal, that provides an opening in a beam block with constant attenuation across an area of the beam to prevent or reduce radiation dose delivery to normal tissues.

# concept[].definition
A device placed into a machine slot or an applicator to which accessories are attached.

# concept[].definition
A device placed into a radiotherapy machine slot which provide slot to add other devices and/or to limit the beam.

# concept[].definition
A category of methods for the calculation of effective dose that are based on radiation transport and are used to predict the Relative Biological Effectiveness of an ion beam based on the quality of the radiation used.[Wambersie A, RBE, reference RBE and clinical RBE: Applications of these concepts in hadron therapy, Strahlentherapie und Onkologie 1999 June, 175(2) : 39-43][Paganetti H, et al., Relative biological effectiveness (RBE) values for proton beam therapy, Int J Rad. Onc Biol Phys, 2002 June; 53(2) : 407-421]

# concept[].definition
A category of methods for the calculation of effective dose that are based on Fractionation or temporal patterns and are used to predict the Biologically Effective Dose.[Thames HD, Hendry JH. Fractionation in radiotherapy. New York: Taylor & Francis; 1987][Barendsen, G.W (1982) Dose fractionation, dose rate and iso-effect relationships for normal tissue responses, Int. J. Radiat. Oncol. Biol. Phys. 8 (11) : 1981-1997.]

# concept[].definition
The Local Effect Model (LEM) method used to predict the Relative Biological Effectiveness of dose delivered using ion beams.[Grun, R. Friedrich, T. Elasasser, T. Kramer, M. Zink, K. Karger, C. P. Durante, M. Engenhard-Cabillic, R. Scholz, M. (2012) "Impact of enhancements in the local effect model (LEM) on the predicted RBE-weighted target dose distribution in carbon ion therapy" Physics in Medicine and Biology 57: 7261 - 7274.]

# concept[].definition
The Microdosimetric Kinetic Model (MKM) " used to predict the Relative Biological Effectiveness of dose delivered using ion beams.[Inaniwa, T. Furukawa, T. Kase, Y. Matsufuji, N. Toshito, T. Matsumoto, Y. Furusawa, Y. Node, K. (2010) "Treatment planning for a scanned carbon beam with a modified microdosimetric kinetic model" Physics in Medicine and Biology 55: 6721 - 6737.]

# concept[].definition
The linear quadratic model usedto compute the equivalent Biologically Effective Dose (BED) delivered in 2 Gray dose fractions.[Fowler JF. The linear-quadratic formula and progress in fractionated radiotherapy. Br J Radiol. 1989 Aug; 62 (740) : 679-94.]

# concept[].definition
The linear quadratic model usedto compute the equivalent Biologically Effective Dose (BED) delivered at an infinitely low dose-rate.[Fowler JF, Br J Radiol. 1989; 62: 679-694]

# concept[].definition
The modified linear quadratic model with time factor method usedto compute the equivalent Biologically Effective Dose (BED) delivered at an infinitely low dose-rate, taking into account tumor repopulation during treatment.[Fowler JF, Semin. Radiat. Oncol. 1992; 2(1) : 16-21]

# concept[].definition
The linear-quadratic-linear dose-response model usedto compute the equivalent Biologically Effective Dose (BED) delivered at an infinitely low dose-rate, taking into account linear cell survival with high dose fractions.[Astrahan M, Med.Phys. 2008; 35: 4161-4172]

# concept[].display
Linear-Quadratic Model for Low-Dose Rate Brachytherapy

# concept[].definition
The linear-quadratic dose-response model modified for low-dose rate brachytherapy used to compute the equivalent Biologically Effective Dose (BED) delivered at an infinitely low dose-rate.[Sing R, Al-Hallaq H, Med.Dosim. 2003; 28(4) : 225-259]

# concept[].definition
A Radiotherapy prescription prescribed prior to the current prescription.

# concept[].definition
Image Instances available as input for prescribing a Radiotherapy treatment prescription.

# concept[].definition
Image Instances available as input for planning a Radiotherapy treatment plan.

# concept[].definition
A treatment technique using multiple decaying radiation sources at fixed spatial locations.

# concept[].definition
A treatment technique using a robotic delivery device with real-time motion tracking and compensation.

# concept[].definition
A treatment technique using a robotic delivery device without real-time motion tracking and compensation.

# concept[].definition
Ionized helium atom with 2 protons and 1 neutron.

# concept[].definition
Ionized helium atom with 2 protons and 2 neutrons.

# concept[].definition
Ionized carbon atom with 6 protons and 6 neutrons.

# concept[].definition
Ionized oxygen atom with 8 protons and 8 neutrons.

# concept[].definition
The injector device detected a pressure above the warning threshold, generated a warning and did not automatically terminate the administration.

# concept[].definition
The injector device detected a pressure above the adjustment limit, took compensating action and did not automatically terminate the administration.

# concept[].definition
The injector device detected a flow rate above the warning threshold, generated a warning and did not automatically terminate the administration.

# concept[].definition
The injector device detected a flow rate above the adjustment limit, took compensating action and did not automatically terminate the administration.

# concept[].definition
The injector device terminated the administration due to detection of an abort request by the operator.

# concept[].definition
The device detected that a pause duration has been reached and the device resumed automatically.

# concept[].display
Terminated due to pressure above termination limit

# concept[].definition
The injector device detected a pressure above the termination limit and automatically terminated the administration.

# concept[].display
Terminated due to flow rate above termination limit

# concept[].definition
The injector device detected a flow rate above the termination limit and automatically terminated the administration.

# concept[].display
Terminated due to excessive duration pause

# concept[].definition
The Injector device detected that a pause duration has exceeded limit and the injector device terminated the administration.

# concept[].display
Terminated due to injector communication loss

# concept[].definition
The injector device detected a communication loss and automaticallyterminated the administration.

# concept[].display
Terminated due to unspecified injector failure

# concept[].definition
The injector device detected an unspecified failure and automaticallyterminated the administration.

# concept[].definition
The injector device started saline flow for the purpose of keeping vein open.

# concept[].definition
The injector device ended saline flow for the purpose of keeping vein open.

# concept[].definition
The injector device detected that a syringe was attached to the injector.

# concept[].definition
The injector device detected that a syringe was detached from the injector.

# concept[].display
Total Keep Vein Open Volume Administered

# concept[].definition
Total volume of flush delivered by the keep vein open function of the injector.

# concept[].definition
An administration phase where fluid is being delivered by an injector system according to the programmed instructions.

# concept[].definition
An administration phase where fluid delivery is stopped by the injector system until a programmed time elapses.

# concept[].definition
An administration phase where the fluid is delivered automatically by an injector system and stopped under manual control by the operator.

# concept[].definition
An administration phase where the fluid is delivered by the injector system under manual control by the operator.

# concept[].definition
Information only available if injection was triggered manually.

# concept[].definition
An administration mode where the fluid is delivered by a mechanical injector system.

# concept[].definition
An administration mode where the substance is delivered manually

# concept[].definition
The injector device detected air in the tubing or syringe before or during the Imaging Agent administration and did not automatically terminate the administration.

# concept[].definition
The injector device detected air in the tubing or syringe and terminated the administration.

# concept[].definition
The injector device received instruction from scanner to terminate the administration and terminated the administration.

# concept[].display
Terminated due to critical battery level

# concept[].definition
The injector device detected critical battery level and terminated the administration.

# concept[].definition
The injector device detected removal of a consumable from the injector device and terminated the administration.

# concept[].definition
A code that specifies how the Imaging Agent is administered to the patient.

# concept[].display
Planned Imaging Agent Administration Procedure Report

# concept[].definition
A report of the planned patient-specific Imaging Agent administration steps.

# concept[].definition
Description of a specific Imaging Agent that was planned or was administered.

# concept[].definition
Number of osmoles of solute per kilogram of solvent at 37°C.

# concept[].definition
Number of osmoles of solute per liter (L) at 37°C.

# concept[].definition
A measure of a resistance of a fluid to gradual deformation by stress, measured at 37°C.

# concept[].definition
Indicates if an Imaging Agent was warmed prior to the administration procedure.

# concept[].definition
The degree to which a paramagnetic contrast agent can enhance the proton transverse relaxation rate constant (R2, 1/T2), normalized to the concentration of the contrast agent.Also referred to as r2. Typically expressed in units l/mmol/s.

# concept[].definition
Indicates whether the Imaging Agent is Ionic or non-ionic.

# concept[].definition
Indicates normalized dose of Imaging Agent per kg of patient weight. Typically recommended by the vendor.For e.g,. grams Iodine per Kg (gI / Kg).

# concept[].definition
Information about use of Imaging Agent component(s).

# concept[].definition
Information about list of administration steps for administering Imaging Agent.

# concept[].definition
A limit set at the power injector device indicating the maximum allowed pressure planned for administering the Imaging Agent.

# concept[].definition
Time after the start of injection of a delivered Imaging Agent administration.

# concept[].definition
An individual administration step in the Imaging Agent administration plan.

# concept[].display
Imaging Agent Administration Step Identifier

# concept[].definition
Identifies a step in an Imaging Agent administration plan.

# concept[].definition
Time difference between the nominal start of the administration step and the actual start of Imaging Agent administration.

# concept[].definition
Time delay for start of image acquisition after start of Imaging Agent administration.

# concept[].display
Imaging Agent Administration Steps Description

# concept[].definition
Description of Imaging Agent administration plan.

# concept[].display
Imaging Agent Administration Protocol Name

# concept[].definition
Protocol name for Imaging Agent administration.

# concept[].definition
Information about a delivery phase of an Imaging Agent administration step.

# concept[].display
Imaging Agent Administration Phase Identifier

# concept[].definition
Identifies a phase in an Imaging Agent administration step.

# concept[].definition
Type of phase in an Imaging Agent administration step.

# concept[].display
Initial Volume of Imaging Agent in Container

# concept[].definition
The volume of the Imaging Agent in an Imaging Agent container before administration.

# concept[].display
Residual Volume of Imaging Agent in Container

# concept[].definition
The volume of the Imaging Agent remaining in the Imaging Agent container after administration.

# concept[].definition
Time for the injector to build up from zero to the set pressure.

# concept[].definition
Flow rate at the start of an administration of the Imaging Agent.

# concept[].definition
Flow rate at the end of an administration of the Imaging Agent.

# concept[].definition
A vendor-specific code indicating the shape of the flow rate curve within an administration phase.

# concept[].display
Imaging Agent Administration Completion Status

# concept[].definition
The status of the Imaging Agent administration procedure at completion as reported by the automated injector or by the administering person.

# concept[].display
Imaging Agent Administration Adverse Events

# concept[].definition
Information about adverse events occurring during administration of an Imaging Agent.

# concept[].definition
The estimated volume lost at the injection site.The estimation includes extravasation, paravenous administration and leakage at the injection site.

# concept[].definition
Date and Time when an adverse event was noticed by the observer.

# concept[].display
Referenced Imaging Agent Administration Step UID

# concept[].definition
The unique identifier of the Imaging Agent administration step being referenced.

# concept[].display
Referenced Imaging Agent Administration Phase Identifier

# concept[].definition
The identifier of an Imaging Agent administration phase being referenced.

# concept[].definition
An injector device that can be configured to execute a series of phases automatically.

# concept[].definition
Number of injector heads or pumps (single, dual or many) in an injector device.

# concept[].definition
Whether the agent administration was discontinued.

# concept[].display
Imaging Agent Volume per Unit of Presentation

# concept[].definition
The volume of Imaging Agent in one unit of presentation. The capacity of the unit of presentation may be larger than this.

# concept[].definition
Information about the Imaging Agent accessory or consumable used for performing the Imaging Agent administration.

# concept[].display
Imaging Agent Administration Consumable Type

# concept[].definition
Type of consumable used for performing the Imaging Agent administration.

# concept[].definition
If the consumable is installed newly during the preparation process for this Imaging Agent Administration.

# concept[].definition
Information about the Imaging Agent administration steps that is patient-specific.

# concept[].definition
Information about the Imaging Agent administration steps that were delivered to a patient.

# concept[].definition
The maximum volume of contrast agent allowed to be administered.This is typically specified by the prescribing health care professional for patient safety and quality purposes.

# concept[].definition
Graph depicting the measurement of flow rate of fluid against time.

# concept[].definition
Graph depicting the measurement of pressure of fluid against time.

# concept[].definition
The alphanumeric string from reading a barcode.

# concept[].definition
Information about two-dimensional graph data for a syringe or pump.

# concept[].display
Imaging Agent Administration Injector Events

# concept[].definition
Information about events that occurred at an injector during an Imaging Agent administration.

# concept[].display
Imaging Agent Administration Injector Event Type

# concept[].definition
Type of event that occurred at an injector during an Imaging Agent administration.

# concept[].definition
Date and time when an injector event was detected.

# concept[].display
Planned Imaging Agent Administration SOP Instance

# concept[].definition
Reference to a Planned Imaging Agent Administration SOP instance.

# concept[].definition
Information about the activity in an Imaging Agent administration phase. In an Automated Injection system this describes the activity of one of the pump or syringe units used.

# concept[].definition
Information about a component of an Imaging Agent.

# concept[].definition
Volume of one agent component in a mixture of multiple components.

# concept[].definition
Total volume administered by all syringes/pump actions during a single phase.

# concept[].definition
Total volume administered by all syringes/pump actions within all phases during a single Step.

# concept[].display
Total number of manually triggered injections

# concept[].definition
Total number of times that an injection was triggered manually.

# concept[].definition
Peak flow rate value detected at a specific location (syringe or pump) during a specific activity of an administration phase.

# concept[].definition
Peak pressure value detected at a location (syringe or pump) during a single administration phase activity.

# concept[].display
Imaging Agent Administration Performed Step UID

# concept[].definition
Unique identification of a single performed Imaging Agent administration step actually delivered on a specific occasion

# concept[].definition
An injection of an inactive agent to test for blockages or leakages in the delivery path, usually performed prior to an administration of an imaging or therapeutic agent.

# concept[].definition
An injection of a bolus of Imaging Agent to determine the appropriate delay time for a diagnostic administration.

# concept[].definition
Administration of an Imaging Agent for the purpose of enhancing contrast in an image.

# concept[].definition
Type of step in an Imaging Agent administration. For example, a test administration or a diagnostic administration.

# concept[].definition
Injection of an inactive fluid to clear the administration path of an active agent.

# concept[].definition
A curve that decays exponentially from a specified start value, at a specified decay rate.

# concept[].definition
A curve that changes linearly from a specified start value to a specified end value.Note: The start value and the end value may be the same, indicating a flat curve.

# concept[].definition
Identifies an Imaging Agent uniquely within a set of Imaging Agents. The Imaging Agent may be a single component or a mix of multiple components.

# concept[].definition
The identifier of an Imaging Agent being referenced.

# concept[].definition
Type of catheter used for Imaging Agent administration.

# concept[].definition
A pharmaceutical agent administered as a pre-medication to prevent contrast reactions.

# concept[].display
Imaging Agent Administration Performed Phase UID

# concept[].definition
Unique identification of a single Imaging Agent administration performed phase.

# concept[].display
Referenced Imaging Agent Administration Phase UID

# concept[].definition
The unique identifier of the Imaging Agent administration performed phase being referenced

# concept[].definition
A non time-determined administration phase that is not automatically terminated, where fluid delivery is stopped until manually resumed.

# concept[].display
Imaging Agent Administration Injector Phase Identifier

# concept[].definition
The Imaging Agent Administration Injector Phase Identifier used for presenting this Phase to the User Interface of the injector. Not necessarily the same as the Imaging Agent Administration Phase Identifier of the IAASR Plan.

# concept[].display
Imaging Agent Administration Phase with Manual Hold

# concept[].definition
Indicator for marking this phase as a Automated Administration Phase, which has undergone a manual hold during execution.

# concept[].definition
A programmed administration phase initiated an injector hold/wait state.

# concept[].definition
A manual intervention of the technologist initiated an injector hold/wait state.

# concept[].definition
A manual intervention of the technologist has resumed injector fluid administration. It does not matter if the hold/wait state was initiated programmed or manually.

# concept[].definition
The injector terminated injection processing from hold/wait after exceeding a time limit.

# concept[].definition
Towards the mid-sagittal plane of the body.

# concept[].definition
Structure of skin of paraspinal area of the neck.

# concept[].display
Skin of paraspinal area of the superior back

# concept[].definition
Structure of skin of paraspinal area of the superior back.

# concept[].definition
Structure of skin of upper paraspinal region.

# concept[].definition
Structure of skin of mid paraspinal region.

# concept[].definition
Structure of skin of lower paraspinal region.

# concept[].definition
Structure of skin of anterior helix of ear.

# concept[].definition
Structure of skin of inferior helix of ear.

# concept[].display
Skin of inferior posterior surface of the pinna

# concept[].definition
Structure of skin of inferior posterior surface of the pinna.

# concept[].definition
Structure of skin of lateral part of dorsum of foot.

# concept[].definition
Structure of skin of lower antihelix of ear.

# concept[].definition
Structure of skin of lower eyelid margin.

# concept[].definition
Structure of skin of medial part of dorsum of foot.

# concept[].definition
Structure of skin of posterior helix of ear.

# concept[].definition
Structure of skin of posterior lobule of the ear.

# concept[].definition
Structure of skin of superior antihelix of ear.

# concept[].definition
Structure of skin of superior posterior helix of ear.

# concept[].display
Skin of superior posterior surface of the pinna

# concept[].definition
Structure of skin of superior posterior surface of the pinna.

# concept[].definition
Structure of skin of upper antihelix of ear.

# concept[].definition
Structure of skin of upper eyelid margin.

# concept[].display
Functional condition present during acquisition

# concept[].definition
A functional condition present during acquisition, such as phonation, weight bearing, voiding of the bladder or hemodynamic physiological challenges.

# concept[].definition
A functional condition present during acquisition that is related to the jaw, such as the position of the lips, mouth, or mandible.

# concept[].definition
RT beam limiting device multi-element leaf pairs

# concept[].definition
A circular, aperture size adjustable beam limiting device for an RT treatment device.

# concept[].definition
RT beam limiting device multi-element unpaired leaves

# concept[].definition
Oriented in the X direction of a defined coordinate system.

# concept[].definition
Oriented in the Y direction of a defined coordinate system.

# concept[].definition
Physical RT external beam compensator to compensate for inhomogeneity.

# concept[].definition
RT Treatment irradiating the body of the Patient in part or in whole.

# concept[].definition
RT Treatment irradiating the surface of the skin of the Patient in part or in whole.

# concept[].display
Isocentric Patient Support Continuous Pitch Angle

# concept[].definition
Patient SupportContinuous Pitch Angle at the isocenter position about the x-axis of the Equipment Coordinate System.

# concept[].display
Isocentric Patient Support Continuous Roll Angle

# concept[].definition
Patient Support Continuous Roll Angle at the isocenter position about the y-axis of the Equipment Coordinate System.

# concept[].display
Isocentric Patient Support Continuous Yaw Angle

# concept[].definition
Patient Support Continuous Yaw Angle at the isocenter position about the z-axis of the Equipment Coordinate System.

# concept[].display
Isocentric Patient Support Lateral Position

# concept[].definition
Patient Support Lateral Position along the x-axis of the Equipment Coordinate System.

# concept[].display
Isocentric Patient Support Longitudinal Position

# concept[].definition
Patient Support Longitudinal Position along the y-axis of the Equipment Coordinate System.

# concept[].display
Isocentric Patient Support Vertical Position

# concept[].definition
Patient Support Vertical Position along the z-axis of the Equipment Coordinate System.

# concept[].definition
A type of device (or cone) for electron treatments that attaches to the applicator carriage of an RT treatment device for the purpose of holding an aperture and a bolus close to the patient's skin. Several beam applicators may be available to reduce the weight of apertures lifted by therapists, decrease the aperture/bolus-to-skin distance, and reduce leakage radiation.

# concept[].definition
A type of device (or cone) for photon treatments that is attached to the radiation head of an RT treatment device into which beam modifiers are installed.

# concept[].definition
A type of device which is used to delimit the radiation of an RT treatment device in case of an intraoperative radiotherapeutic treatment.

# concept[].definition
A physical device placed inside the radiation head used to modify the fluence distribution across the field.

# concept[].definition
A physical device manually placed between the radiation head and the patient used to modify the fluence distribution across the field. It is motorized and can be inserted/extracted from the beam path.

# concept[].definition
An effective wedge generated by the movement of a jaw across the treatment field while delivering radiation.

# concept[].definition
Mechanical grid to embed scaling information in a radiographic image

# concept[].definition
Mechanical crosshair to embed a crosshair representing axes and scaling information in a radiographic image

# concept[].definition
An electronic radiographic imaging device

# concept[].definition
A spherical mechanical indicator used for alignment

# concept[].definition
Beam that uses a filter to produce a nearly uniform intensity profile.

# concept[].definition
Beam that does not use a filter to produce a nearly uniform intensity profile.

# concept[].definition
Beam that uses a filter to produce a nearly uniform region across part of the intensity profile.

# concept[].definition
A medical professional capable of developing a radiotherapy plan from a Physicians prescription and assisting in radiation machine calibration and other radiotherapy quality assurance work under supervision of a Medical Physicist.

# concept[].definition
The point location defined as the nominal source of radiation.

# concept[].definition
The center point of the treatment machine through which all beam central axes pass under all gantry angles.

# concept[].definition
A fixed point at which initial patient setup is performed based on lasers.

# concept[].definition
A device delivering radiotherapy treatments.

# concept[].definition
Set of Robotic Nodes that can be used for targets associated with the patient's head.

# concept[].definition
Set of Robotic Nodes that can be used for targets within the patient's body, excluding the head.

# concept[].definition
Set of Robotic Nodes that can be used for targets near the patient's trigeminal nerve.

# concept[].definition
Two Robotic Nodes for Quality Assurance, for example daily checks.

# concept[].definition
Single Robotic Node for Quality Assurance.

# concept[].definition
DICOM objects communicated in time-synchronized flows using DICOM-RTV, intended for a simultaneous presentation.

# concept[].definition
Audio and Video DICOM objects communicated in time-synchronized flows using DICOM-RTV, intended for a simultaneous presentation.

# concept[].definition
Two Video DICOM objects communicated in time-synchronized flows using DICOM-RTV, intended for a stereo video.

# concept[].definition
Audio and two Video DICOM objects communicated in time-synchronized flows using DICOM-RTV, intended for a stereo video.

# concept[].definition
A visual explanation of how an algorithm produced its results.

# concept[].definition
Values are derived using global average pooling in convolutional neural networks to produce a localization map highlighting the important regions in the image for predicting a class. The class activation map (CAM) indicates the discriminative image regions used by the network to identify a class.

# concept[].definition
Values are derived using the gradients of a target class flowing into the final convolutional layer of a convolutional neural network to produce a localization map highlighting the important regions in the image for predicting a class. The gradient-weighted class activation map (Grad-CAM) indicates the discriminative image regions used by the network to identify a class.

# concept[].definition
Values are derived using a single back-propagation pass through a network to produce a localization map highlighting the spatial support of a given class in a given image.

# concept[].definition
An object which is attached to the patient to attenuate the therapeutic dose (such as a Bolus or a lead shield).

# concept[].definition
A leiomyosarcoma (sarcoma containing large spindle cells of smooth muscle) occuring at a site other than the uterus.

# concept[].definition
Body structures of bone and soft tissue.

# concept[].display
Perivascular adipose tissue fat attenuation index

# concept[].definition
A measure of weighted attenuation shifts within perivascular adipose tissue, computed as a weighted measure of attenuation in concentric layers of perivascular tissue around the arterial wall, capturing the respective perivascular attenuation gradients. Abbreviated "FAI".See Antoniades C, Kotanidis CP, Berman DS. State-of-the-art review article. Atherosclerosis affecting fat: What can we learn by imaging perivascular adipose tissue? Journal of Cardiovascular Computed Tomography. 2019 Mar 29;0(0). Available from: http://​www.journalofcardiovascularct.com/​article/​S1934-5925(18)30618-X/​abstract.

# concept[].definition
A channel monitoring the patient’s position.

# concept[].definition
A channel monitoring the patient’s rotation around the body’s longitudinal (head – feet) axis.

# concept[].definition
A channel monitoring the angle of elevation of the patient against horizontal.

# concept[].definition
Begin of deepened or accelerated breathing.

# concept[].definition
End of deepened or accelerated breathing.

# concept[].definition
Point in time after end of hyperventilation.

# concept[].definition
Airflow measured by a thermistor sensor.

# concept[].definition
Airflow measured by a thermocouple sensor.

# concept[].definition
Airflow measurement by a nasal piezoelectric polyvinylidenefluoride sensor.

# concept[].definition
Airflow measurement by a Continuous Positive Airway Pressure device.

# concept[].definition
Airflow measured by an unspecified method or device.

# concept[].definition
Pressure delivered by a positive airway pressure device like a CPAP or BiPAP machine.

# concept[].definition
Pressure of air leaking from a positive airway pressure device like a CPAP or BiPAP machine.

# concept[].definition
Tidal volume during breathing when subject is using a positive airway pressure device like a CPAP or BiPAP machine.

# concept[].definition
Pressure in the esophagus measured by esophageal manometry.

# concept[].definition
Respiratory pressure measured with an unspecified method or device.

# concept[].definition
Respiratory effort delivered by a respiratory inductance plethysmography (RIP) belt applied on the patient’s thorax.

# concept[].definition
Respiratory effort delivered by a respiratory inductance plethysmography (RIP) belt applied on the patient’s abdomen.

# concept[].definition
Respiratory effort delivered by a piezoelectric polyvinylidenefluoride sensor belt applied on the patient’s thorax.

# concept[].definition
Respiratory effort delivered by a piezoelectric polyvinylidenefluoride sensor belt applied on the patient’s abdomen.

# concept[].definition
Respiratory effort measured by an unspecified method or device on the patient’s thorax.

# concept[].definition
Respiratory effort measured by an unspecified method or device on the patients abdomen.

# concept[].definition
Respiratory effort measured by an unspecified method or device.

# concept[].definition
Partial pressure of carbon dioxide in the respiratory gases measured transcutaneously.

# concept[].definition
Partial pressure of carbon dioxide measured in the end-tidal main-stream respiratory gases.

# concept[].definition
Partial pressure of carbon dioxide measured in the end-tidal main-stream respiratory gases averaged over time.

# concept[].definition
Partial pressure of carbon dioxide measured in the end-tidal side-stream respiratory gases.

# concept[].definition
Partial pressure of carbon dioxide measured in the end-tidal side-stream respiratory gases averaged over time.

# concept[].definition
Partial pressure of carbon dioxide measured in the main-stream respiratory gases.

# concept[].definition
Partial pressure of carbon dioxide measured in the side-stream respiratory gases.

# concept[].definition
Partial pressure of carbon dioxide measured in the main-stream respiratory gases averaged over time.

# concept[].definition
Partial pressure of carbon dioxide measured in the side-stream respiratory gases averaged over time.

# concept[].definition
Partial pressure of carbon dioxide in the respiratory gases measured using an unspecified method or device.

# concept[].definition
Radiotherapy treatment delivery where treatment parameters are defined at the treatment device, rather than specified by a treatment plan.

# concept[].display
Imaging Agent Administration Step Sequence Number

# concept[].definition
The order in which Imaging Agent administration steps are planned to be performed.

# concept[].display
Operator decision to terminate treatment

# concept[].definition
Decision was made by the operator of the equipment to discontinue treatment.

# concept[].definition
Decision was made by the patient to discontinue treatment.

# concept[].display
Physician decision to terminate treatment

# concept[].definition
Decision was made by the physician to discontinue treatment.

# concept[].definition
Treatment delivery of this RT Radiation was terminated.

# concept[].definition
An out-of-tolerance delivery parameter was accepted or re-specified and treatment delivery was continued.

# concept[].definition
The patient was re-positioned and treatment delivery was continued.

# concept[].definition
An applicator is confirmed to be present.

# concept[].definition
The patient could not be positioned on the patient positioning device in a way, that the shape of treatment area has an unacceptable orientation to match the intended target area.

# concept[].definition
The patient could not be positioned on the patient positioning device in a way, that the that the shape of treatment area radiated the intended target area.

# concept[].definition
The machine intended to be used for treatment was not available.

# concept[].definition
The patientÂ´s anatomy is found to be inconsistent with the patient model used during planning to the extent that treatment delivery was impacted.

# concept[].definition
A re-calibration of the treatment device impacted the treatment delivery.

# concept[].definition
A planned Beam Modifier was not available at the time of treatment.

# concept[].definition
A capability of the treatment device was not available because the corresponding license expired.

# concept[].definition
Beam targeting parameters have been adjusted in a way that violated a clinical tolerance.

# concept[].definition
A Meterset value has been adjusted in a way that violated a clinical tolerance.

# concept[].definition
A Delivery Rate has been adjusted in a way that violated a clinical tolerance.

# concept[].definition
Jaw positions exceeded the machine tolerance.

# concept[].definition
One or more MLC leave positions exceeded the machine tolerance.

# concept[].definition
The Source Position angle exceeded the machine tolerance.

# concept[].definition
The dose rate exceeded the machine tolerance.

# concept[].display
Primary Fluence Monitoring System Interlock

# concept[].definition
An interlock triggered by the primary fluence-monitoring system.

# concept[].display
Secondary Fluence Monitoring System Interlock

# concept[].definition
An interlock triggered by the secondary fluence-monitoring system (also known as Secondary Dose Monitoring System ).

# concept[].definition
An interlock triggered by a controlling timer.

# concept[].definition
An interlock triggered by a door being open.

# concept[].definition
An interlock triggered by patient movement.

# concept[].display
Family history of non-melanoma skin cancer

# concept[].definition
Information about non-melanoma skin cancers in blood relatives of the patient.

# concept[].definition
Information about in situ melanoma in blood relatives of the patient.

# concept[].definition
Information about non-melanoma skin cancers in the patient.

# concept[].definition
The number of malignant melanomas the patient has had diagnosed.

# concept[].definition
The number of in situ melanomas the patient has had diagnosed.

# concept[].definition
A skin lesion that is firm on palpation.

# concept[].definition
A lesion that is raised from the skin surface on palpation.

# concept[].display
Number of first-degree relatives affected by malignant melanoma

# concept[].definition
The number of direct relatives (i.e., parent, sibling, offspring) who have malignant melanoma.

# concept[].definition
A continuous part of space, not necessarily associated with a particular image.

# concept[].display
Referenced Region of Interest Identifier

# concept[].definition
A reference to an identifier of a Region of Interest.For example, the value of ROI Number (3006,0022) within an Item of Structure Set ROI Sequence (3006,0020) in an Instance of RT Structure Set Storage SOP Class.

# concept[].definition
A path along the long axis of an elongated finding or feature, which is equidistant from its surface, such as along the center of the lumen of a vessel.

# concept[].definition
Mode of stimulation used when applying stimulation techniques during procedure.

# concept[].definition
The sample number where the first stimulation event takes place.

# concept[].definition
The time offset where the stimulation starts, relative to the start time of the recorded waveform data.

# concept[].definition
The frequency with which periodic stimulation occurs.

# concept[].definition
Description of dosimetric-related values that can be summarized for the entire scope of accumulation.

# concept[].definition
Description of dosimetric-related values that can be summarized for a single irradiation event.

# concept[].definition
Description of the reference point definition and accumulated dose values at the reference point.

# concept[].definition
This acquisition of data (e.g., for constructing an image) was for some reason unsatisfactory.

# concept[].definition
The reason that data (e.g., for constructing an image) was rejected.

# concept[].definition
Description of the radiation dose characteristics independent of an irradiation event.

# concept[].definition
The component that is used to define the origin of the RDSR RCS.

# concept[].definition
The description of the RDSR reference coordinate system. It should include a description of where the origin is, as well as the orientation of the coordinate system.

# concept[].definition
Description of the radiation source characteristics

# concept[].definition
Describes if a reported value is a mean, median, maximum, minimum, etc.

# concept[].definition
Description of radiation technique details

# concept[].definition
Description of the output measurement point dose accumulation timing and values.

# concept[].definition
The air kerma (in mGy) accumulated at the output measurement point during a given period of time.

# concept[].definition
Description of the radiation field area and corresponding timing and source index.

# concept[].definition
A list of three-dimensional coordinates that describe the perimeter of the radiation field. The points shall be coplanar and are limited to describing either polygons or ellipses.

# concept[].definition
Specifies when a value was determined within a period of time.

# concept[].display
X-Ray Source Reference Coordinate System

# concept[].definition
Description of the X-Ray source coordinate reference system and the transformation matrix that relates it to the RDSR reference coordinate system

# concept[].definition
A transformation matrix that relates one coordinate system to another

# concept[].definition
A point defining a vector relative to the center of rotation that defines a normal vector of the rotation plane

# concept[].definition
The angle about the center of rotation for a rotating object

# concept[].definition
Description of component positions described in the X-Ray source reference coordinate system

# concept[].definition
The three-dimensional coordinate of the output measurement position. The output measurement position is described in the X-Ray source reference coordinate system.

# concept[].definition
The three-dimensional coordinate of the reference point position. The reference point position is described in the X-Ray source reference coordinate system. The reference point may be at the same position as the output measurement point.

# concept[].definition
Textual identification for each attenuator described. The identifier is used to link the description of the attenuator to its position described in the beam position or attenuator position template. The identifier shall not change during the scope of accumulation described in 10040, and shall not be repeated.

# concept[].definition
Description of positions and corresponding timing for attenuators

# concept[].definition
Description of various patient attenuation characteristics that may be known by the system and may change during the course of the scope of accumulation

# concept[].definition
Description of various procedure characteristics that may change during a study and may be useful to aid in dosimetry or quality assurance

# concept[].definition
Characteristics of an X-Ray attenuator used as either a filter or attenuating object in the X-Ray beam. Includes a description of actual or equivalent material, as well as thickness information.

# concept[].definition
All the points in time throughout a defined period of time

# concept[].definition
The point in time at the beginning of a defined period of time

# concept[].definition
The point in time at the end of a defined period of time

# concept[].definition
The point in time at the middle of a defined period of time

# concept[].definition
The origin of the Frame of Reference is defined as part of the room in which the equipment is located

# concept[].definition
The origin of the Frame of Reference is defined as part of the equipment

# concept[].definition
The origin of the Frame of Reference is defined as part of the patient support

# concept[].definition
The origin of the Frame of Reference is defined as the isocenter of the imaging system

# concept[].definition
The origin of the RDSR Frame of Reference is defined as the origin of the patient coordinate system in the images.

# concept[].display
100 mm Pediatric Head CT Dosimetry Phantom

# concept[].definition
A dosimetry phantom consisting of a 100 mm diameter polymethyl methacrylate (PMMA) cylinder. The phantom will be at least 140 mm in length. The phantom will be longer than the length of the sensitive volume of the radiation detector used for measurements. The phantom will have five holes just large enough to accept a radiation detector and will be parallel to the axis of symmetry: one hole at the center, and four holes with their centers 10 mm below the surface of the phantom at 90° intervals. For the holes not used during a measurement, properly fitting insert parts made of PMMA will be used.

# concept[].definition
Indication of whether endorectal coil was used during MR examination.

# concept[].definition
Type of the endorectal coil used during MR examination.

# concept[].display
Inflatable endorectal coil fill substance

# concept[].definition
Substance used to fill endorectal coil in order to suppress distortion artifacts during MR examination.

# concept[].definition
Orientation of the plane defining image acquisition.

# concept[].definition
Time between acquisition of imaging samples corresponding to the same tissue location during dynamic contrast-enhanced examination.

# concept[].definition
Clinical history of the patient related to the genitourinary health.

# concept[].definition
Assessment of the imaging study related to its quality, as defined by the compliance with the technical acquisition requirements or as perceived by the reader.

# concept[].definition
Assessment of a specific imaging series related to its quality, as defined by the compliance with the technical acquisition requirements or as perceived by the reader.

# concept[].definition
Standard or guideline used to perform structured evaluation of imaging study.

# concept[].display
Prostate MRI relevant procedure information

# concept[].definition
Information relevant for evaluation of prostate MR imaging study.

# concept[].definition
Finding relating to the overall assessment of the prostate gland

# concept[].definition
Finding relating to the localized entities within the prostate gland

# concept[].definition
Measurements relating localized findings to the prostate gland

# concept[].definition
Distance between a finding and a neurovascular bundle

# concept[].definition
Length of the portion of the lesion abutting the prostate capsule as observed in the image.

# concept[].definition
Finding identified in prostate MRI that is located outside of the prostate gland.

# concept[].definition
Evaluation of a localized abnormality within the gland using Prostate Imaging Reporting and Data System (PI-RADS®) guidelines.

# concept[].definition
Assessment of the lesions characteristics based on its appearance in T2-weighted MR images following the Prostate Imaging Reporting and Data System (PI-RADS®) guidelines.

# concept[].definition
Assessment of the lesions characteristics based on its appearance in diffusion-weighted MR images following the Prostate Imaging Reporting and Data System (PI-RADS®) guidelines.

# concept[].definition
Assessment of the lesions characteristics based on its appearance in Dynamic Contrast-enhanced MR images following the Prostate Imaging Reporting and Data System (PI-RADS®) guidelines.

# concept[].definition
Prostate Imaging Reporting and Data System (PI-RADS®) version 2.0. .

# concept[].definition
Prostate Imaging Reporting and Data System (PI-RADS®) version 2.1 .

# concept[].definition
Image from a diffusion-weighted acquisition corresponding to the highest b-value.

# concept[].definition
Image acquisition that involves injection of a contrast agent into the bloodstream.

# concept[].definition
Image obtained as a difference in image intensities between two phases of a dynamic contrast-enhanced acquisition.

# concept[].definition
Area of focal dilatation that occurs within the prostatic utricle.

# concept[].definition
Based on image appearance, the coil was not placed correctly.

# concept[].definition
Incorrect coil was selected during MR acquisition.

# concept[].definition
The imaging procedure performed did not correspond to what was requested.

# concept[].definition
Some patient preparation procedures were not performed sufficiently with respect to what was expected.

# concept[].definition
Coverage of the imaged anatomy is not complete.

# concept[].definition
Choice of Field of View size or position is not fit for the purpose of the acquisition.

# concept[].definition
Signal-to-noise characteristics are insufficient for the purpose of the acquisition.

# concept[].definition
Timing of the contrast injection relative to the timing of the image acquisition was not properly selected.

# concept[].definition
Contrast enhancement observed in the image is not sufficient for the purpose of the acquisition.

# concept[].definition
The study lacks a sufficient set of subtraction images.

# concept[].definition
Extra subtraction image sets are present that are incorrect or confusing.

# concept[].definition
Diffusion-weighted MR image obtained with an expected b-value is not present.

# concept[].display
Severe distortion in the area of interest

# concept[].definition
Severe geometric distortions are present in the image, and are affecting the area of interest in the image.

# concept[].definition
Apparent Diffusion parametric map image is missing, but was expected.

# concept[].display
Distortion artifact in the area of interest

# concept[].definition
Geometric distortions are present in the image, and are affecting the area of interest in the image.

# concept[].definition
There is no history of prostate cancer in the patient’s family.

# concept[].display
Pre-biopsy localization of prostate lesion

# concept[].definition
The purpose of imaging is to identify and localize targets suspicious of the presence of prostate cancer prior to biopsy.

# concept[].definition
Continual monitoring of a patient with localized prostate cancer, with a view to curative intent, according to locally agreed pathways. After [Kuru 2013]

# concept[].definition
The need to detect or measure the amount of change in the condition.

# concept[].definition
Abnormality localized at a focus, central point or locus.

# concept[].definition
Abnormality not localized to a single focus.

# concept[].definition
Partially but not entirely surrounded (bounded) by a distinct tissue layer, such as a smooth low-signal line on MRI.

# concept[].definition
Entirely surrounded (bounded) by a distinct tissue layer, such as a smooth low-signal line on MRI, in more than one spatial dimension (at least two imaging planes).

# concept[].definition
Having higher signal intensity (more intense, brighter) than background tissue on the apparent diffusion coefficient map.

# concept[].definition
Having lower intensity (darker) than a reference background tissue on apparent diffusion coefficient map.

# concept[].definition
Continued increase of signal intensity over time.

# concept[].definition
Signal intensity does not change over time after its initial rise, flat; plateau refers to signal that varies <10% from the peak signal over the duration of the DCE MRI.

# concept[].definition
Signal intensity decreases after its highest point after its initial rise.

# concept[].definition
Focal, early enhancement corresponding to a focal peripheral zone of transition zone lesion on T2 and/or DWI MRI.

# concept[].definition
Lack of early enhancement. Diffuse enhancement not corresponding to a focal lesion on T2 and/or DWI MRI. Focal enhancement corresponding to a BPH lesion.

# concept[].definition
Contrast-enhanced is observed in the early stage following contrast injection

# concept[].definition
Contrast enhancement is non-focal and diffused over a region.

# concept[].definition
Contrast enhancement is concentrated in a focal tissue area.

# concept[].definition
Class of organofluorine compounds containing only carbon and fluorine.

# concept[].display
ESUR 2012 prostate MRI acquisition requirements

# concept[].definition
Prostate MRI technical acquisition requirements defined in .

# concept[].display
PI-RADS 2.0 prostate MRI acquisition requirements

# concept[].definition
Prostate MRI technical acquisition requirements defined in PI-RADS® 2.0 .

# concept[].display
PI-RADS 2.1 prostate MRI acquisition requirements

# concept[].definition
Prostate MRI technical acquisition requirements defined in PI-RADS® 2.1 .

# concept[].definition
A high-speed ultrasound imaging technique that quantitatively assesses the stiffness/elasticity of tissue based on the tracking of the propagation of a shear-wave and measuring its velocity over a 2D area.

# concept[].definition
A high-speed ultrasound imaging technique that quantitatively assesses the stiffness/elasticity of tissue based on the tracking of the propagation of a shear-wave and measuring its velocity over a 3D volume.

# concept[].definition
The velocity at which a shear-wave propagates through a substance or tissue. The shear wave speed (SWS) is correlated with the elasticity of the substance or tissue.

# concept[].definition
The rate at which shear wave speed is attenuated with changes in the frequency of the shear wave. The dispersion slope is correlated with both the elasticity and the viscosity of the substance or tissue.

# concept[].definition
Distance from the ultrasound probe surface to the geometric center of the ROI.

# concept[].definition
The width of the center range within which 50% of the measured values in a reference population fall. The IQR may also be described as the first quartile value subtracted from the third quartile value, or equivalently the 25th percentile value subtracted from the 75th percentile value.

# concept[].display
Interquartile Range to Median Ratio of population

# concept[].definition
The interquartile range value of a population divided by the median value of the same population. IQR/M, which is one way to describe the variability of a set of measurements, is sometimes used as a metric of measurement quality.

# concept[].definition
A high-speed ultrasound imaging technique that quantitatively assesses the stiffness/elasticity of tissue based on the tracking of the propagation of a shear-wave and measuring its velocity at a point.

# concept[].display
left ventricle apical anteroseptal segment

# concept[].definition
A segment of wall of the left ventricle at the apical level whose circumferential extent aligns with that of the anteroseptal segments at the mid and basal levels.

# concept[].display
left ventricle apical inferoseptal segment

# concept[].definition
A segment of wall of the left ventricle at the apical level whose circumferential extent aligns with that of the inferoseptal segments at the mid and basal levels.

# concept[].display
left ventricle apical inferolateral segment

# concept[].definition
A segment of wall of the left ventricle at the apical level whose circumferential extent aligns with that of the inferolateral segments at the mid and basal levels.

# concept[].display
left ventricle apical anterolateral segment

# concept[].definition
A segment of wall of the left ventricle at the apical level whose circumferential extent aligns with that of the anterolateral segments at the mid and basal levels.

# concept[].definition
Method to position the patient such that the device isocenter is at a specific location in the patient. For a radiotherapeutic treatment, this allows rotational delivery of radiation treatment fields that maintain a focus on that location.

# concept[].definition
Method to position the patient such that the distance between the radiation source and the patient skin is a specific value.

# concept[].definition
Method to position the patient at an extended distance from the radiation source, typically 2-6 meters, to create a large treatment field for total body irradiation (TBI).

# concept[].definition
Method to position the patient using high-accuracy localization imaging from multiple angles. Typically combined with rigorous fixation to reduce patient motion.

# concept[].definition
Method to position the patient using three-dimensional skin surface registration.

# concept[].definition
Method to set up the patient for ocular treatments by focusing the patient’s gaze on a particular location.

# concept[].definition
Preparation procedure to set up devices to shield parts of the patient from radiation.

# concept[].definition
Preparation procedure to set up devices to fixate parts of the patient. Fixation involves both preventing motion of the patient part and putting the patient part into an intended configuration.

# concept[].definition
Preparation procedure to orient and position parts of the patient with respect to a physical reference.

# concept[].display
Patient Motion Management Setup Procedure

# concept[].definition
Preparation procedure for controlling or compensating for motion of parts of the patient.

# concept[].definition
Device to protect anatomical structures within a body cavity.

# concept[].definition
A radiation shielding device that is not in contact with the patient or the treatment delivery device.

# concept[].definition
Radiofrequency-based positioning beacon that responds to interrogation.

# concept[].definition
A device that reflects infrared light. Often used to position patients.

# concept[].definition
A device that emits radiation from a radioactive source. Often used to position patients.

# concept[].definition
A device that produces a temperature map.

# concept[].definition
A device that projects a controlled pattern of light and captures data based on infrared and visible light measurements.

# concept[].definition
A light to which the patient’s gaze is aligned.

# concept[].definition
Device to help patients to follow certain instructions.

# concept[].definition
Device to hold the attention of the patient. May be used to reduce the anxiety or discomfort of the patient during a procedure.

# concept[].definition
Procedure to minimize risk of collision between a primary device, the patient, and associated devices.

# concept[].definition
Belt used to limit abdominal motion by compressing the abdomen.

# concept[].definition
Arch-shaped device used to limit abdominal motion by maintaining pressure on the abdomen.

# concept[].definition
A board to which the patient’s head is fixed to prevent the patient from moving relative to the tabletop. Typically the patient’s head is fixed with a mask.

# concept[].definition
A label designating a specific location on an patient support table top.

# concept[].definition
Positioning angle on a fixation device with a single degree of angular freedom.

# concept[].display
Abdominal Compression Plate Position Number

# concept[].definition
The number indicating the position of the plate of an abdominal compression device.

# concept[].definition
Length of the part of the abdominal compression belt being used to compress the abdomen.

# concept[].definition
Pressure applied to the abdomen by the abdominal compression belt.

# concept[].definition
References to SOP Instances providing the basis for patient alignment. May contain the intended orientation. The basis for alignment is also referred to as the alignment reference.

# concept[].definition
The RT Radiation has been already delivered in a previous Treatment Session.

# concept[].definition
It has been assessed that the delivery of the Treatment is unnecessary to meet the current treatment goals.

# concept[].definition
It has been assessed that the delivery of the Treatment would result in effects that exceed the physical or psychological tolerance of the patient.

# concept[].definition
Fiducial defined or used during a radiotherapeutic procedure, e.g., treatment planning or positioning.

# concept[].definition
Lagrangian strain parallel to the reference contour (i.e. in the longitudinal direction) calculated as: SL(t)=(L(t) -L0)/L0, where L(t) is the length at a given point t in time and L0 is the reference length at the reference time t0.Strain values are negative with shortening. Due to the common convention of using end-diastole as the t0 reference time, echocardiography strain values are typically negative.

# concept[].definition
Peak value of longitudinal Lagrangian strain during an identified interval, such as systole or a full cardiac cycle.

# concept[].display
Time to Peak Longitudinal Lagrangian Strain

# concept[].definition
The time from the beginning of the interval to the time of the peak longitudinal Lagrangian strain.

# concept[].definition
The standard deviation of the time to peak longitudinal strain value for different myocardial segments. Typically assessed over 18-segments of the left ventricle.

# concept[].definition
Rate of change of longitudinal strain over time.

# concept[].definition
Lagrangian strain in the wall of a cavity perpendicular to the longitudinal strain and towards the center of the cavity.

# concept[].definition
Rate of change of radial Lagrangian strain over time.

# concept[].definition
Lagrangian strain tangential to the reference contour, perpendicular to the longitudinal strain, with positive values in the counterclockwise direction when viewed from the apex.

# concept[].definition
Rate of change of circumferential Lagrangian strain over time.

# concept[].definition
A method of analyzing the motion of tissue, such as the heart muscle or blood, by using naturally occurring speckle patterns in 2D ultrasound imaging.

# concept[].definition
A method of analyzing the motion of tissue, such as the heart muscle or blood, by using naturally occurring speckle patterns in 3D ultrasound imaging.

# concept[].definition
A view obtained from the apical four chamber view by angling the beam medially toward the patient’s right shoulder to better include the right ventricle.

# concept[].definition
A view obtained from the apical four chamber view by angling the beam laterally toward the patient’s left shoulder to better include the right ventricle.

# concept[].definition
A measurement method that uses a contour representing the estimated endocardial boundary.

# concept[].definition
A measurement method that uses a contour representing the estimated epicardial boundary.

# concept[].definition
A measurement method that uses a contour representing the estimated mid-layer of the myocardium (between the endocardium and epicardium).

# concept[].display
LV End-systolic GLS Multiview Mean (Endocardial)

# concept[].definition
The longitudinal Lagrangian strain of the left ventricle calculated as the arithmetic mean of LV End-systolic Global Longitudinal Strain 4CH (Endocardial), LV End-systolic Global Longitudinal Strain 2CH (Endocardial), and LV End-systolic Global Longitudinal Strain ALAX (Endocardial).

# concept[].definition
The longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical four chamber view at end systole using the endocardial method.The measurement may have been taken at any point in the respiration cycle.Sometimes abbreviated GLS4C.

# concept[].definition
The longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical two chamber view at end systole using the endocardial method.The measurement may have been taken at any point in the respiration cycle.Sometimes abbreviated GLS2C.

# concept[].definition
The longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical long axis view at end systole using the endocardial method.The measurement may have been taken at any point in the respiration cycle.Sometimes abbreviated GLSALAX.

# concept[].display
LV Peak Systolic GLS Multiview Mean (Endocardial)

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle calculated as the arithmetic mean of LV Peak Systolic Global Longitudinal Strain 4CH (Endocardial), LV Peak Systolic Global Longitudinal Strain 2CH (Endocardial), and LV Peak Systolic Global Longitudinal Strain ALAX (Endocardial).

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical four chamber view during systole using the endocardial method.The measurement may have been taken at any point in the respiration cycle.

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical two chamber view during systole using the endocardial method.The measurement may have been taken at any point in the respiration cycle.

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical long axis view during systole using the endocardial method.The measurement may have been taken at any point in the respiration cycle.

# concept[].display
LV Peak GLS Multiview Mean (Endocardial)

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle calculated as the arithmetic mean of LV Peak Global Longitudinal Strain 4CH (Endocardial), LV Peak Global Longitudinal Strain 2CH (Endocardial), and LV Peak Global Longitudinal Strain ALAX (Endocardial).

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical four chamber view over the cardiac cycle using the endocardial method.The measurement may have been taken at any point in the respiration cycle.

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical two chamber view over the cardiac cycle using the endocardial method.The measurement may have been taken at any point in the respiration cycle.

# concept[].definition
The peak longitudinal Lagrangian strain of the left ventricle measured along the entire myocardial length in 2D Speckle mode in the apical long axis view over the cardiac cycle using the endocardial method.The measurement may have been taken at any point in the respiration cycle.

# concept[].definition
The mechanical dispersion of the left ventricle in 2D Speckle mode at end systole.The measurement may have been taken using any view, using any segment model (16, 17 or 18-segment) and at any point in the respiration cycle.

# concept[].definition
The point in time in a cardiac cycle when the mitral valve nominally finishes closing.

# concept[].definition
The point in time in a cardiac cycle when the mitral valve nominally begins opening.

# concept[].definition
The point in time in a cardiac cycle when the aortic valve nominally finishes closing.

# concept[].definition
The point in time in a cardiac cycle when the aortic valve nominally begins opening.

# concept[].definition
EEG electrode placement on the head located inferior frontopolar, left.

# concept[].definition
EEG electrode placement on the head located inferior frontopolar, right.

# concept[].definition
EEG electrode placement on the head located inferior anterior frontal, left.

# concept[].definition
EEG electrode placement on the head located inferior anterior frontal, right.

# concept[].definition
EEG electrode placement on the head located inferior parietooccipital, left.

# concept[].definition
EEG electrode placement on the head located inferior parietooccipital, right.

# concept[].definition
EEG electrode placement on the head located inferior occipital, left.

# concept[].definition
EEG electrode placement on the head located inferior occipital, right.

# concept[].display
Coronary Artery Disease Assessment Modifier

# concept[].display
Coronary Artery Disease Stenosis Assessment Modifier

# concept[].definition
Degree of maximal coronary stenosis is 0%.

# concept[].definition
Degree of maximal coronary stenosis is 1-24%.

# concept[].definition
Degree of maximal coronary stenosis is 25-49%.

# concept[].definition
Degree of maximal coronary stenosis is 50-69%.

# concept[].definition
Degree of maximal coronary stenosis is 70-99%, or left main coronary stenosis is >50%, or coronary stenosis is >=70% in 3 vessels.

# concept[].definition
Degree of maximal coronary stenosis is 70-99% stenosis.

# concept[].definition
Left main coronary stenosis is >50% or coronary stenosis is >=70% in 3 vessels.

# concept[].definition
Degree of maximal coronary stenosis is 100% (total occlusion).

# concept[].definition
No more than mild coronary stenosis in interpretable segments, and one or more vessel segments non-diagnostic.

# concept[].definition
One or more vessel segments were non-diagnostic for coronary stenosis.

# concept[].definition
At least one coronary stent is present in the coronary system.

# concept[].definition
At least one coronary artery bypass graft is present.

# concept[].definition
Vulnerable plaque or high risk plaque features are present.

# concept[].definition
Material identifiers used during or for an RT planning process.

# concept[].definition
An interlock triggered by reaching a predefined dose limit.

# concept[].definition
An interlock triggered by the occurrence, or anticipation, of a physical collision caused by lack of separation distance between objects.

# concept[].definition
An interlock triggered by the occurrence, or anticipation, of a physical collision caused by lack of separation distance between machine and machine.

# concept[].definition
An interlock triggered by the occurrence, or anticipation, of a physical collision caused by lack of separation distance between machine and patient.

# concept[].definition
An interlock triggered by the occurrence, or anticipation, of a physical collision caused by lack of separation distance between an accessory and the machine, patient or another accessory.An accessory can be e.g., an electron applicator or a stereotactic cone.

# concept[].definition
An interlock triggered by an actual value being outside of tolerance from the planned value.

# concept[].definition
The interlock was resolved, and treatment delivery was continued.

# concept[].definition
The total dose length product for irradiation events within in the defined scope of accumulation that were computed using the same phantom.

# concept[].definition
A volume whose surface represents an isodose.

# concept[].definition
Region defined by the spatial extent of a radiation dose.

# concept[].definition
Images that contain quality control material for the current procedure.

# concept[].definition
Tissue that is other than that which is of interest for the purpose of the task.

# concept[].definition
Requested data cannot be read from storage media, e.g., data physically deleted, or storage media no longer available.

# concept[].definition
The SOP Instance is a Key Object Selection Document, used for referenced object change management, that has had its directives processed and is no longer to be used (see .

# concept[].definition
The SOP Instance has been replaced by a SOP Instance with an alternate encoding. The alternate encoding may utilize a different SOP Class or have different image quality characteristics (e.g., lossy compression).

# concept[].definition
A grouping of related measurements and calculations that share a common context and that serves as a reference against which similar measurement groups are compared.

# concept[].definition
A method for detecting a shear wave in ultrasound data based on the displacement of particles relative to their referenced baseline positions.

# concept[].definition
A method for detecting a shear wave in ultrasound data based on estimated particle velocity. Particle velocity is estimated from frame to frame particle displacement.

# concept[].display
Shear Wave Dispersion Slope Center Frequency

# concept[].definition
The center frequency of the range over which the shear wave dispersion slope was assessed.

# concept[].definition
Method used to detect and characterize a shear wave motion signal in an ultrasound signal.

# concept[].definition
A signal processing filter of the Butterworth type.

# concept[].definition
A signal processing filter of the Chebyshev type.

# concept[].definition
A signal processing filter of the Bessel type.

# concept[].definition
A signal processing filter of the Gaussian type

# concept[].definition
A K-type (constant k) signal processing filter.

# concept[].definition
An M-derived (m-type) signal processing filter.

# concept[].definition
A double-m-derived (mm'-type) signal processing filter.

# concept[].definition
A signal processing filter of the Bode type.

# concept[].definition
A signal processing filter of the Zobel type.

# concept[].definition
A finite impulse response (FIR) signal processing filter.

# concept[].definition
A cascaded integrator–comb (CIC) signal processing filter.

# concept[].definition
An infinite impulse response (IIR) signal processing filter.

# concept[].definition
A biquadratic signal processing filter (second order recursive linear filter).

# concept[].definition
Frequency in Hz divided by ½ of the sampling rate.

# concept[].definition
Frequency in Hz divided by ½ of the sampling rate and then multiplied by π (pi).

# concept[].definition
Ratio of output magnitude to input magnitude, has no units and a value between 0-1.

# concept[].definition
The type of entity that is the subject of a specific observation, such as a measurement or qualitative evaluation.

# concept[].definition
A single two-dimensional pixel plane of an image.Usually used in the context of a multi-frame image.

# concept[].display
RT Patient Position Acquisition, Integrated Dose MV

# concept[].definition
Acquisition of patient positioning information using continuous megavoltage acquisition during treatment delivery.

# concept[].display
RT Patient Position Acquisition, Film Cassette MV

# concept[].definition
Acquisition of patient positioning information using a radiation-sensitive film suited for megavoltage radiation.

# concept[].display
RT Patient Position Acquisition, Film Cassette kV

# concept[].definition
Acquisition of patient positioning information using a radiation-sensitive film suited for photon radiation.

# concept[].display
RT Patient Position Acquisition, Cone-Beam CT kV

# concept[].definition
Acquisition of patient positioning information using kilovoltage Cone-Beam CT imaging.

# concept[].display
RT Patient Position Acquisition, Conventional CT kV

# concept[].definition
Acquisition of patient positioning information using kilovoltage conventional CT imaging.

# concept[].display
RT Patient Position Acquisition, Cone-Beam CT MV

# concept[].definition
Acquisition of patient positioning information using megavoltage Cone-Beam CT imaging.

# concept[].display
RT Patient Position Acquisition, Conventional CT MV

# concept[].definition
Acquisition of patient positioning information using megavoltage conventional CT imaging.

# concept[].definition
The point location defined as the nominal source of radiation used for imaging.

# concept[].definition
Image(s) of the patient used to provide a reference for positioning of the patient for the planned treatment.

# concept[].definition
The type of method used to start the acquisition.

# concept[].definition
The acquisition trigger is not specified. Acquisition may be initiated manually by the device operator.

# concept[].display
Acquisition Initiation before start of Radiation

# concept[].definition
The acquisition is started before delivering the therapeutic radiation. It is expected that the therapeutic beam is not started before the acquisition is completed.

# concept[].display
Acquisition Initiation after end of Radiation

# concept[].definition
The acquisition is started after delivering the therapeutic radiation.

# concept[].display
Acquisition Initiation by triggering parameter

# concept[].definition
The acquisition is started when the triggering parameter reaches specific value(s).

# concept[].definition
Flag denoting whether the acquisition is to be repeated in regular intervals separated by a certain increment.

# concept[].definition
A single parameter from which the absorbed dose delivered can be calculated through a calibration procedure with additional information.

# concept[].definition
Angle in degrees about the Y-axis of the Equipment Coordinate System by which the source is rotated. A Continuous Rotation Angle is an angle in the range (-∞,+∞). Continuous Rotation Angle represent a rotation direction and magnitude. The magnitude is not limited to be between 0 and 360 degrees.

# concept[].definition
Time elapsed after the start of the delivery of an RT Radiation.

# concept[].display
Percentage of expected beam-on time of Radiation

# concept[].definition
Delivered percentage of the duration of a Radiation at a given point in time. The denominator is the duration of time that the beam is expected to be on between the start and the end of the delivery of an RT Radiation. The numerator is the duration of time that the beam has been on since the start of the first beam-on. Both durations exclude "beam-hold" periods within the treatment delivery (e.g. during gated treatments).

# concept[].display
IEC61217 Imaging Source to Axis Distance

# concept[].definition
Distance from the imaging source, in mm, to the gantry rotation axis of a IEC C-Arm Device. This parameter is not specifically defined by , but is consistent with

# concept[].display
IEC61217 X-Ray Image Receptor Radial Displacement from Isocenter

# concept[].definition
X-Ray Image Receptor Radial Displacement From Isocenter, in mm (in the IEC GANTRY Coordinate System) as defined by .

# concept[].display
IEC61217 X-Ray Image Receptor Longitudinal Displacement

# concept[].definition
X-Ray Image Receptor Longitudinal Displacement, in mm (in the IEC GANTRY Coordinate System) as defined by .

# concept[].display
IEC61217 X-Ray Image Receptor Lateral Displacement

# concept[].definition
X-Ray Image Receptor Lateral Displacement, in mm (in the IEC GANTRY Coordinate System) as defined by .

# concept[].definition
X-Ray Image Receptor rotation (around the z-axis of the IEC X-RAY IMAGE RECEPTOR Coordinate System) as defined by . DICOM represents this value as a Continous Rotation Angle in degrees.

# concept[].definition
Lowest energy for acquiring an image as configured on the device.

# concept[].definition
Default energy for acquiring an image as configured on the device.

# concept[].display
Planar matrix ultrasound transducer geometry

# concept[].definition
Ultrasonic transducer geometry characterized by multiple transducer elements arranged in a grid on a plane.

# concept[].definition
Ultrasonic transducer geometry characterized by multiple transducer elements arranged on a hemispherical surface.

# concept[].definition
The subject is illuminated from a single direction.

# concept[].definition
The subject is illuminated from two distinct directions.

# concept[].definition
The subject is illuminated from more than two (potentially a very large number of) distinct directions.

# concept[].definition
The subject is illuminated through the transducer. Light may pass through the transducer at one or more locations.

# concept[].definition
The subject is illuminated internally. Light is delivered via a device (other than the transducer) inside the body.

# concept[].definition
Ultrasound Transducer that utilizes interferometric detection systems.

# concept[].definition
Mechanism for correction of data using a sound propagation model based on a single speed of sound, where the speed for the acoustic coupling medium (if present) is assumed to be the same as for the imaged object.

# concept[].definition
Mechanism for correction of data using a sound propagation model based on two speeds of sound, one for the acoustic coupling medium and one for the imaged object.

# concept[].definition
Mechanism for correction of data using a sound propagation model based on a speed of sound map that defines the speed of sound on a per-pixel basis.

# concept[].definition
A family of algorithms for reconstructing an image from measured data by back-projection over spheres or parts of spheres. May include linear or nonlinear processing steps before and/or after the back-projection step. Includes methods termed ‘beamforming’ and ‘delay-and-sum’.

# concept[].definition
A family of algorithms for reconstructing an image from measured data by iteratively adjusting the image to minimize a cost function between the data and a numerical model or that uses non-iterative (e.g. time-reversal) methods, or that performs inversion of a forward model matrix.

# concept[].definition
Signal intensity of a Blood Deoxygenation Level image.

# concept[].definition
An interlock triggered during scan spot delivery that is not covered by a more specific code.

# concept[].definition
An interlock triggered by the scan spot position being outside of tolerance.

# concept[].definition
An interlock triggered by the scan spot size being outside of tolerance.

# concept[].definition
An interlock triggered by the Meterset delivered for a spot being outside of tolerance.

# concept[].display
Radiation Detected During Beam Hold Interlock

# concept[].definition
An interlock triggered by detection of radiation when the beam is supposed to be off.

# concept[].definition
An interlock triggered by a multileaf collimator (MLC) leaf position being outside of tolerance.

# concept[].definition
An interlock triggered by the detected Meterset rate being outside of tolerance.

# concept[].definition
An interlock triggered by the detected energy of the beam being outside of tolerance.

# concept[].definition
A visual assessment of the coloration of a skin lesion.

# concept[].definition
The anatomy of the subject prior to the effect of a surgical procedure.

# concept[].definition
Non-REM Sleep Stage 1 is the transition between wakefulness and sleep.

# concept[].definition
The adjustable distance between the seat pan (the resting place for the patient’s bottom) and the nominal floor of the upright fixation device. Adjustment allows the feet to be placed firmly on the nominal floor without the legs being stretched or too cramped.

# concept[].definition
The adjustable angle of the pitch of the seat pan. Adjustment provides thigh support while pitching downward changes the angle between the upper legs (knee to hip) and the abdomen. An angle of zero is a typical sitting position. A large positive angle, such as 75, puts a person in a nearly standing stance.

# concept[].definition
The adjustable angle of the pitch of the backrest. Adjustment controls the angle of the patient’s back (when in a nominally seated or upright position) with respect to gravity. Typically tilted back a bit so that the back is resting and slightly supported. An angle of zero means the backrest is vertical. A positive angle means the patient is reclining.

# concept[].definition
The adjustable distance between the shin rest and the nominal center under the seat of the chair. Adjustment accommodates the leg length and stance of the patient (the stance of the patient is adjusted primarily through the seat pan pitch angle and the backrest fixation pitch angle).

# concept[].definition
The adjustable distance between the heel stop and the shin rest. Adjustment accommodates the patient foot size, shin rest position, lower leg length, and the angle of the lower legs with respect to gravity. The zero point is device-specific.

# concept[].definition
The adjustable lateral distance between the left arm rest and patient’s thorax. The zero point is device-specific.

# concept[].definition
The adjustable angle of the pitch of the left arm rest. Adjustment controls one of the angles of the elbow. An angle of zero means the arm rest is parallel to the ground.

# concept[].definition
The adjustable angle of the roll of the left arm rest. Adjustment controls the roll angle of the lower arm. An angle of zero means the arm rest is parallel to the ground.

# concept[].definition
The adjustable lateral distance between the right arm rest and the patient’s thorax. The zero point is device-specific.

# concept[].definition
The adjustable angle of the pitch of the right arm rest. Adjustment controls one of the angles of the elbow. An angle of zero means the arm rest is parallel to the ground.

# concept[].definition
The adjustable angle of the roll of the right arm rest. Adjustment controls the roll angle of the lower arm. An angle of zero means the arm rest is parallel to the ground.

# concept[].definition
Whether the hand grips are inserted into the backrest or not. If hand grips are present, it is implicit that the patient is intended to grip the hand grips with their hands.

# concept[].definition
A fixation device that immobilizes the patient’s shins by the natural weight and pressure of the shins against the device.

# concept[].definition
A fixation device that immobilizes the heels of the patient in counterpoint to the shin rest.

# concept[].definition
A fixation device placed above the patient’s shoulders along the back rest, such that when gripped, ensures that the patient’s arms and elbows are lifted and not obstructing lateral access to the chest or breasts.

# concept[].definition
A fixation device that supports the thighs (and bottom) of the patient. The seat pan is distinct from the backrest.

# concept[].definition
Classification of a Waveform annotation as a pattern.

# concept[].definition
Classification of a Waveform annotation as belonging to EEG.

# concept[].definition
Classification of a Waveform annotation as belonging to ECG.

# concept[].definition
Classification of a Waveform annotation as belonging to EOG.

# concept[].definition
Classification of a Waveform annotation as an event, which occurred in the recording device or in the environment (e.g. the room).

# concept[].definition
Classification of a Waveform annotation as a description of the patient’s consciousness.

# concept[].definition
Classification of a Waveform annotation as belonging to ECG.

# concept[].definition
A Waveform annotation report comprising neurophysiology annotations added during recording.

# concept[].definition
A Waveform annotation report containing neurophysiology annotations resulting from post-hoc review.

# concept[].definition
A Waveform annotation report containing neurophysiology annotations resulting from automated analysis.

# concept[].definition
A container that groups waveform annotations.

# concept[].definition
The neurophysiology or cardiology procedure to which annotations apply.

# concept[].definition
A container that groups a set of associated waveform annotations.

# concept[].definition
A number identifying a set of associated annotations.

# concept[].definition
A text describing a set of associated annotations.

# concept[].definition
Coded modifier for a coded waveform annotation.

# concept[].definition
A container that references properties of involved waveforms

# concept[].definition
A container that groups common information about a set of involved waveforms

# concept[].display
Waveform Library Entry Multiplex Group Descriptors

# concept[].definition
A container that groups common information about a waveform multiplex group comprising a set of recording channel

# concept[].definition
Identifying number of a waveform multiplex group

# concept[].definition
Unique identifier of a waveform multiplex group

# concept[].definition
Number of channels in a waveform multiplex group

# concept[].definition
UID of common synchronization environment.

# concept[].definition
50 Hz or 60 Hz line noise artifact from a power supply

# concept[].definition
Video recording turned on automatically or by the operator

# concept[].definition
Video recording turned off automatically or by the operator

# concept[].definition
Machine code for when the preamplifier (the headbox in case of EEG recordings) is connected to the recording device.

# concept[].definition
Machine code for when preamplifier (the headbox in case of EEG recordings) is disconnected.

# concept[].definition
A breakout box was connected or reconnected.

# concept[].definition
The event button was pressed for the purpose of capturing an event.

# concept[].definition
The event button was pressed for the purpose of testing.

# concept[].definition
The counted group of follicles that fall within a specified type and size range.

# concept[].definition
The lowest value that is included in a diameter range.

# concept[].definition
The highest value that is included in a diameter range.

# concept[].definition
The lowest value that is included in a volume range.

# concept[].definition
The highest value that is included in a volume range.

# concept[].definition
The number of follicles observed in a specified size range.

# concept[].definition
The total number of antral follicles counted in both ovaries.

# concept[].definition
The type of ovarian follicle as determined by its developmental stage.

# concept[].definition
An antral follicle that has grown to dominate its neighboring follicles which then undergo atresia. Typically, only one or two antral follicles will become dominant in each cycle and mature to ovulation.

# concept[].definition
An ovarian follicle that has progressed from the secondary stage and has developed a small fluid-filled cavity called the antrum. Antral Follicles are also referred to as Tertiary Follicles or Graafian Follicles.

# concept[].definition
An ovarian follicle that has progressed from the primary stage and has added theca cells.

# concept[].definition
An ovarian follicle that has been activated from the primordial stage.

# concept[].definition
An ovarian follicle that is quiescent in its original state.

# concept[].definition
The identifier of a referenced follicle count group.

# concept[].definition
A measure of the pair-wise overlap of two sets defined as two times the intersection of the two samples, divided by the sum of the two samples. Also known as the Sørensen–Dice coefficient. The samples may be points representing pixels or voxels in a geometric region.

# concept[].definition
A measure of the pair-wise overlap of two samples defined as the intersection of the two regions, divided by the union of the two samples. Also known as the Intersection Over Union (IoU). The samples may be points representing pixels or voxels in a geometric region.

# concept[].definition
A count of the number of pixels in an image or a region of an image.

# concept[].definition
A count of the number of voxels in a volume.

# concept[].definition
Values are derived by mean intensity projection of acquired data.

# concept[].definition
Values are derived by median intensity projection of acquired data

# concept[].definition
Values are derived by summation of values in the projection of acquired data

# concept[].definition
Ventriculoatrial time interval (VA time), defined as the interval between the onset of ventricular systole and the onset of atrial systole.

# concept[].definition
Atrioventricular time interval (AV time or AVI), defined as the interval between the onset of atrial systole and the onset of ventricular systole.

# concept[].definition
The shortest distance (LD) between any point on the inside of the atrium wall and any point on the outside of the descending thoracic aorta wall measured in a four-chamber view of the heart.

# concept[].definition
Post-Left Atrium Space (PLAS) Index is the distance between the left atrium and the descending thoracic aorta divided by the diameter of the descending thoracic aorta, where both measurements are taken in the same view (thus defining the point in the descending thoracic aorta for the diameter measurement).

# concept[].definition
The pulsatility index at the middle cerebral artery of the fetus divided by the pulsatility index at the umbilical artery. Abbreviated CPR.

# concept[].definition
The pulsatility index at the umbilical artery divided by the pulsatility index at the middle cerebral artery of the fetus.

# concept[].definition
The ratio of the peak retrograde flow during the A-wave to the peak forward flow during the S-wave, as measured at the inferior vena cava using pulsed-wave doppler. Abbreviated a/S.

# concept[].definition
The ratio of the peak forward flow during the S-wave to the peak retrograde flow during the A-wave, as measured at the inferior vena cava using pulsed-wave doppler. This is the inverse of the Preload index.

# concept[].definition
A blood flow index calculated by subtracting the peak retrograde flow during the A-wave from the peak forward flow during the S-wave, then dividing by the peak forward flow during the D-wave, i.e., (S-a)/D.

# concept[].definition
The pulsatility index measured in the ductus venosus during the full cardiac cycle in pulsed doppler mode in any view. Abbreviated PIV.

# concept[].definition
The peak velocity index measured in the ductus venosus during the full cardiac cycle in pulsed doppler mode in any view. Abbreviated PVIV.

# concept[].definition
The length of the right ventricle measured at end diastole in 2D mode using a method that includes the inlet portion of the chamber in any view.

# concept[].definition
The length of the left ventricle measured at end diastole in 2D mode using a method that includes the inlet portion of the chamber in any view.

# concept[].definition
A method of measuring a cardiac chamber length that includes the inlet portion of the chamber in the length.

# concept[].definition
A method of measuring hemodynamics in the umbilical cord by taking the measurement in a free loop of the cord. A free loop is a portion of the umbilical cord that is not attached to the fetal body or the placenta and is instead floating freely within the amniotic fluid.

# concept[].definition
The ductal arch formed by the ductus arteriosus as it travels from its origin at the pulmonary artery to the point of entry into the descending aorta.

# concept[].definition
A planar view of the heart showing the aortic valve, ascending aorta, aortic arch, descending aorta and inferior vena cava.

# concept[].display
Oblique short axis view at ductus arteriosus

# concept[].definition
A planar oblique short-axis view of the heart showing the pulmonary trunk (main pulmonary artery, right pulmonary artery) and the ductus arteriosus.

# concept[].display
Short axis view at pulmonary artery level

# concept[].definition
A planar short-axis view of the heart showing the pulmonary valve, main pulmonary artery, right and left pulmonary arteries.

# concept[].definition
An axial planar view of the heart showing the main pulmonary artery, ascending aorta in cross-section, and superior vena cava (SVC) in cross-section. One or both branch pulmonary arteries may also be included. Abbreviated 3VV.

# concept[].definition
An axial planar view of the heart showing the trachea and the aortic and ductal arches converging to form the proximal descending thoracic aorta. Abbreviated 3VT.

# concept[].definition
An axial planar view of the heart showing the subaortic area, aortic valve, supravalvular region, and ascending aorta.

# concept[].definition
An axial planar view of the heart showing both ventricles and both atria. The view does not necessarily include the apex of the heart.

# concept[].definition
Report section for assessment of cardiovascular observations that evaluate fetal well-being.

# concept[].definition
A point-based assessment of abnormal fluid accumulation in fetal body areas. This is a component of the Fetal Cardiovascular Profile Score.

# concept[].definition
A point-based assessment of heart size relative to thoracic size based on observations of the circumferences or areas. This is a component of the Fetal Cardiovascular Profile Score.

# concept[].definition
A point-based assessment of cardiac function based on observations of valve inflow and regurgitation patterns and ventricular shortening. This is a component of the Fetal Cardiovascular Profile Score.

# concept[].definition
A point-based assessment of venous flow based on Doppler observations of the umbilical vein and ductus venosus. This is a component of the Fetal Cardiovascular Profile Score.

# concept[].definition
A point-based assessment of arterial flow based on Doppler observations of the umbilical artery. This is a component of the Fetal Cardiovascular Profile Score.

# concept[].definition
A point-based score that sums the scores of five component assessments of cardiovascular observations to evaluate fetal well-being according to Makikallio et al, Human fetal cardiovascular profile score and neonatal outcome in intrauterine growth restriction. Ultrasound Obstet Gynecol 2008; 31: 48‒54 doi:10.​1002/​uog.​5210 Abbreviated CVPS.

# concept[].definition
The velocity time integral measured in the pulmonary vein for the antegrade flow during the full cycle in pulsed doppler mode in any view. Forward flow occurs during the D-wave and the S-wave.

# concept[].definition
The velocity time integral measured in the pulmonary vein for the retrograde flow during the A-wave in pulsed doppler mode in any view.

# concept[].definition
The ratio of the retrograde velocity time integral to the antegrade velocity time integral at the pulmonary vein.

# concept[].definition
The volume rate of blood output by the right ventricle derived from the right ventricle stroke volume and heart rate. Abbreviated RVCO.

# concept[].definition
The volume rate of blood output by the heart derived from the cardiac output of the left and right ventricles. Abbreviated CCO.

# concept[].definition
The diameter of the annulus of the mitral valve measured during diastole in 2D mode in a short axis view at the level of the mitral valve.

# concept[].definition
The diameter of the annulus of the tricuspid valve measured during diastole in 2D mode in a short axis view at the level of the mitral valve.

# concept[].definition
The peak velocity measured in the inferior vena cava during the S-wave in pulsed doppler mode in any view.

# concept[].definition
The peak velocity measured in the inferior vena cava during the a-wave in pulsed doppler mode in any view.

# concept[].definition
A report containing the quantitative results of human, or machine analysis of imaging acquired prior to a transcatheter structural heart procedure, focusing on measurements used to guide procedural planning and device selection.

# concept[].definition
A report containing the quantitative results of human, or machine analysis of imaging acquired during a transcatheter structural heart procedure, focusing on real-time measurements to guide procedural execution and assess immediate outcomes.

# concept[].definition
A report containing the quantitative results of human, or machine analysis of imaging acquired after a transcatheter structural heart procedure, focusing on the evaluation of procedural success, device placement, and patient outcomes.

# concept[].definition
A mid-esophageal view directed anteriorly with the transesophageal transducer in its baseline orientation.

# concept[].definition
A mid-esophageal plane directed 45 degrees clockwise from the mid-esophageal 0 degree TEE.

# concept[].definition
A mid-esophageal plane directed 60 degrees clockwise from the mid-esophageal 0 degree TEE.

# concept[].definition
A mid-esophageal plane directed 90 degrees clockwise from the mid-esophageal 0 degree TEE.

# concept[].definition
A mid-esophageal plane directed 135 degrees clockwise from the mid-esophageal 0 degree TEE.

# concept[].display
Ball and disk type left atrial appendage closure device

# concept[].definition
A device, in the form of a disk and cylindrical lobe connected by a central waist, for sealing off a left atrium appendage.

# concept[].display
Ball type left atrial appendage closure device

# concept[].definition
A spherical device for sealing off a left atrium appendage.

# concept[].definition
A device for sealing off a left atrium appendage.

# concept[].definition
The anatomical orifice connecting the left atrial appendage to the left atrium of the heart.

# concept[].definition
The distance from the mitral leaflets to the level of the transseptal puncture measured during systole in a four-chamber view, with the measurement line drawn parallel to the atrial septum.

# concept[].definition
The cross-sectional area of the ascending aorta measured between the aortic sinuses of Valsalva and normal tubular configuration of the aorta during diastole in 2D or 3D, in the long axis view.

# concept[].definition
The qualitative severity of calcification of the annulus of the aortic valve, evaluated during systole, in any view at the level of the annulus of the aortic valve.

# concept[].definition
The widest diameter of the annulus of the aortic valve measured at systole, in a short axis view at the level of the annulus of the aortic valve.

# concept[].definition
The narrowest diameter of the annulus of the aortic valve measured at systole, in a short axis view at the level of the annulus of the aortic valve.

# concept[].definition
The length of the perimeter of the annulus of the aortic valve measured at systole, in a short axis view at the level of the annulus of the aortic valve.

# concept[].definition
The volume of calcification of the annulus of the aortic valve, evaluated during systole, in a short axis view at the level of the annulus of the aortic valve, using a qualitative method.

# concept[].definition
The qualitative severity of calcification of the commissures of the aortic valve, evaluated at any time during the cardiac cycle, in any view at the level of the annulus of the aortic valve.

# concept[].definition
The distance from the aortic annulus to the sinotubular junction measured during diastole in the long axis view.

# concept[].definition
The diameter of the ascending aorta measured at the level of the sinotubular junction during diastole, in any view.

# concept[].definition
The area within the sinus of valsalva measured during diastole, in a short axis view, at the level of the sinus of valsalva.

# concept[].definition
The length of coaptation (where the aortic valve leaflets are in contact), measured during diastole in the long axis view.

# concept[].display
Aortic valve noncoronary leaflet intercommissural angle

# concept[].definition
The angle between the two commissures of the noncoronary leaflet of the aortic valve measured during diastole, in a short axis view at the level of the aortic valve.

# concept[].display
Aortic valve right leaflet intercommissural angle

# concept[].definition
The angle between the two commissures of the right leaflet of the aortic valve measured during diastole, in a short axis view at the level of the aortic valve.

# concept[].display
Aortic valve left leaflet intercommissural angle

# concept[].definition
The angle between the two commissures of the left leaflet of the aortic valve measured during diastole, in a short axis view at the level of the aortic valve.

# concept[].display
Aortic valve noncoronary leaflet intercommissural distance

# concept[].definition
The straight-line distance between the two commissures of the left leaflet of the aortic valve measured during diastole, in a short axis view at the level of the aortic valve.

# concept[].display
Aortic valve right leaflet intercommissural distance

# concept[].definition
The straight-line distance between the two commissures of the right leaflet of the aortic valve measured during diastole, in a short axis view at the level of the aortic valve.

# concept[].display
Aortic valve left leaflet intercommissural distance

# concept[].definition
The straight-line distance between the two commissures of the left leaflet of the aortic valve measured during diastole, in a short axis view at the level of the aortic valve.

# concept[].display
Aortic valve left coronary leaflet height

# concept[].definition
The perpendicular distance from the plane of the annulus to the tip of the left coronary leaflet measured during diastole, in a long axis view.

# concept[].display
Aortic valve left coronary leaflet length

# concept[].definition
The distance along the surface of the left coronary leaflet from the tip to the hinge point of the leaflet to the aortic annulus, measured during diastole, in a long axis view.

# concept[].definition
The perpendicular distance from the plane of the annulus to the tip of the noncoronary leaflet measured during diastole, in a long axis view.

# concept[].definition
The distance along the surface of the noncoronary leaflet from the tip to the hinge point of the leaflet to the aortic annulus, measured during diastole, in a long axis view.

# concept[].display
Aortic valve right coronary leaflet height

# concept[].definition
The perpendicular distance from the plane of the annulus to the tip of the right coronary leaflet measured during diastole, in a long axis view.

# concept[].display
Aortic valve right coronary leaflet length

# concept[].definition
The distance along the surface of the right coronary leaflet from the tip to the hinge point of the leaflet to the aortic annulus, measured during diastole, in a long axis view.

# concept[].definition
The diameter within the ascending aorta measured during diastole in 2D, in any view at the level of the right pulmonary artery.

# concept[].definition
The distance between the aortic annulus and the left main coronary ostium measured at their closest points, during systole, in a long axis view.

# concept[].display
Left ventricular outflow tract calcification severity

# concept[].definition
The qualitative severity of calcification of the left ventricular outflow tract, from the annular plane to 5 mm below, evaluated at any time during the cardiac cycle and in any view.

# concept[].definition
The maximum thickness of the largest atherosclerotic plaque deposit found within the ascending aorta, measured during systole, in the view that demonstrates the thickest plaque, using any appropriate imaging method

# concept[].definition
The distance between the aortic annulus and the right main coronary ostium measured at their closest points, during systole, in a long axis view.

# concept[].definition
The internal longitudinal length of the right ventricle from the apex to the tricuspid annulus, measured during diastole, in a four-chamber view.

# concept[].display
Right ventricular diastolic mid segment minor axis

# concept[].definition
The internal diameter of the right ventricle from the interventricular septum to the free wall, measured at the level of the papillary muscles during diastole, in a four-chamber view.

# concept[].display
Right ventricular diastolic basal minor axis

# concept[].definition
The internal diameter of the right ventricle from the interventricular septum to the free wall, measured in the basal third of the right ventricle during diastole, in a four-chamber view.

# concept[].display
Mitral anterior leaflet A1 scallop length

# concept[].definition
The distance along the hinge line of the A1 scallop of the anterior leaflet of the mitral valve, measured during systole, in the long axis view.

# concept[].display
Mitral anterior leaflet A2 scallop length

# concept[].definition
The distance along the hinge line of the A2 scallop of the anterior leaflet of the mitral valve, measured during systole, in the long axis view.

# concept[].display
Mitral anterior leaflet A3 scallop length

# concept[].definition
The distance along the hinge line of the A3 scallop of the anterior leaflet of the mitral valve, measured during systole, in the long axis view.

# concept[].definition
The area of the atrial surface of the anterior leaflet of the mitral valve measured during systole, in a 3D en face view of the mitral valve.

# concept[].definition
The angle between the plane passing through the aortic annulus and the plane passing through the mitral annulus measured during systole, in the long axis view.

# concept[].definition
The straight-line distance between the two commissures of the anterior and posterior leaflets of the mitral valve measured during diastole, in a two-chamber view.

# concept[].definition
The straight-line distance between a point in the right trigone region of the mitral annulus and a point in the left trigone region of the mitral annulus, measured during systole, in a 3D en face view of the mitral valve.

# concept[].definition
The longitudinal displacement of the plane of the mitral annulus over the course of a cardiac cycle, measured any view.

# concept[].display
Mitral annulus anterolateral to posteromedial diameter

# concept[].definition
The diameter of the annulus of the mitral valve measured from the anterolateral aspect to the posteromedial aspect, during systole, in a 3D en face view of the mitral valve.

# concept[].definition
The diameter of the annulus of the mitral valve measured from the anterior aspect to the posterior aspect, during systole, in the short axis view at the level of the mitral annulus.

# concept[].definition
The area within the annulus of the mitral valve measured during systole, in a short axis view at the level of the annulus of the mitral valve.

# concept[].definition
The qualitative severity of calcification of the annulus of the mitral valve, evaluated during diastole, in any view, at the level of the annulus of the mitral valve.

# concept[].definition
The diameter of the annulus of the mitral valve at the level of the commissures of the annulus, measured during systole, in a 3D en face view of the mitral valve.

# concept[].definition
The ratio of the anteroposterior diameter of the mitral annulus and the anterolateral diameter of the mitral annulus, measured during systole.

# concept[].definition
The sum of the vertical distance from the highest point on the mitral annulus to the mitral annular plane and the vertical distance from the lowest point on the mitral annulus to the mitral annular plane. It is measured at systole, in a 3D transverse view of the mitral valve.

# concept[].definition
The angle between a vector from the furthest anterior aspect of the annulus to the midpoint of the commissural diameter and a vector from the furthest posterior aspect of the annulus to the midpoint of the commissural diameter. It is measured at systole, in a 3D view of the mitral valve.

# concept[].definition
The length of the perimeter of the annulus of the mitral valve measured during systole, in a short axis view at the level of the annulus of the mitral valve.

# concept[].definition
The length of coaptation (where the anterior and posterior leaflets are in contact) of the mitral valve, measured during systole, in a 3D view.

# concept[].definition
The distance between the two papillary muscle tips of the mitral valve, measured during diastole in a four-chamber view.

# concept[].display
Anterolateral papillary muscle to the left trigone

# concept[].definition
The distance between the anterolateral papillary muscle tip and a point in the left trigone region of the mitral annulus, measured during systole in a four-chamber view.

# concept[].display
Posteromedial papillary muscle to the right trigone

# concept[].definition
The distance between the posteromedial papillary muscle tip and a point in the right trigone region of the mitral annulus, measured during systole in a four-chamber view.

# concept[].definition
The surface area of the portion of the mitral valve leaflets that is displaced above the annular plane (prolapsed) measured during systole, in a short axis view.

# concept[].definition
The volume encompassed by annular plane and the portion of the mitral valve leaflets that is displaced above the annular plane (prolapsed) measured during systole, in a short axis view.

# concept[].definition
The distance between the tip of the free edge of a flail mitral valve leaflet or segment and the plane of the mitral annulus measured during systole, in any view.

# concept[].definition
The ratio of the transverse diameter of the left ventricle at the level of the papillary muscle base divided by the longitudinal distance between the level of the papillary muscle base and the mitral annulus plane, measured at diastole in a four-chamber view. See doi:10.1016/j.jcmg.2008.12.025

# concept[].definition
The perpendicular distance from the point of coaptation (where the anterior and posterior leaflets of the mitral valve meet) to the annular plane measured during systole, in a 3D or 2D view at the level of the mitral annulus.

# concept[].definition
The area between the ventricular surface of the leaflets of the mitral valve and the annular plane measured during systole, in a 3D view at the level of the mitral annulus.

# concept[].display
Mitral valve tenting segment height A1-P1

# concept[].definition
The distance from the point where the A1-P1 scallops of the mitral valve contact (coaptation point) to the annular plane measured during systole, in a four-chamber view at the level of the mitral annulus.

# concept[].display
Mitral valve tenting segment height A2-P2

# concept[].definition
The distance from the point where the A2-P2 scallops of the mitral valve contact (coaptation point) to the annular plane measured during systole, in a four-chamber view at the level of the mitral annulus.

# concept[].display
Mitral valve tenting segment height A3-P3

# concept[].definition
The distance from the point where the A3-P3 scallops of the mitral valve contact (coaptation point) to the annular plane measured during systole, in a four-chamber view at the level of the mitral annulus.

# concept[].definition
The combined area of the P1, P2 and P3 leaflet scallops of the posterior mitral valve, measured during systole, in the long axis view.

# concept[].definition
The distance along the hinge line of the posterior mitral valve P1, P2 and P3 leaflet scallops measured during systole, in the long axis view.

# concept[].display
Posterior mitral valve P1 leaflet scallop length

# concept[].definition
The distance along the hinge line of the posterior mitral valve P1 leaflet scallop during systole, in the long axis view.

# concept[].display
Posterior mitral valve P2 leaflet scallop length

# concept[].definition
The distance along the hinge line of the posterior mitral valve P2 leaflet scallop during systole, in the long axis view.

# concept[].display
Posterior mitral valve P3 leaflet scallop length

# concept[].definition
The distance along the hinge line of the posterior mitral valve P3 leaflet scallop during systole, in the long axis view.

# concept[].definition
The area within the annulus of the tricuspid valve measured during diastole, in a 3D en face view of the tricuspid valve.

# concept[].display
Tricuspid annulus area diastolic systolic ratio

# concept[].definition
The area within the annulus of the tricuspid valve calculated at diastole divided by the area within the annulus of the tricuspid valve calculated at systole, in a 3D en face view of the tricuspid valve.

# concept[].definition
The length of the perimeter of the annulus of the tricuspid valve measured during diastole, in a four-chamber view.

# concept[].definition
The length of coaptation (where the anterior, posterior, and septal leaflets are in contact), measured during systole, in a 3D view.

# concept[].definition
The maximum diameter of the annulus of the tricuspid valve measured during diastole, in a four-chamber view.

# concept[].definition
The minimum diameter of the annulus of the tricuspid valve measured during diastole, in a four-chamber view.

# concept[].definition
The ratio of the maximum diameter of the annulus of the tricuspid valve and the minimum diameter of the annulus of the tricuspid valve, measured during diastole, in a four-chamber view.

# concept[].definition
The distance from the point where the leaflets of the tricuspid valve contact (coaptation point) to the annular plane measured during systole, in a four-chamber 3D transverse view of the tricuspid valve.

# concept[].definition
The volume of the region between atrial surface of the leaflets and the annular plane measured during systole, in a 3D view of the tricuspid valve.

# concept[].display
Left atrial appendage closure device circumference

# concept[].definition
The circumference of the left atrial appendage closure device after deployment, measured at the shoulder during end-systole in a 2D or 3D view of the left atrial appendage.

# concept[].display
Left atrial appendage closure device compression ratio

# concept[].definition
The ratio of the diameter of the left atrial appendage closure device after deployment, measured at the shoulder during end-systole in a 2D or 3D view of the left atrial appendage, and diameter of the left atrial appendage closure device as specified by its manufacturer.

# concept[].display
Left atrial appendage closure device diameter

# concept[].definition
The diameter of the left atrial appendage closure device after deployment, measured at the shoulder during end-systole in a 2D view of the left atrial appendage.

# concept[].display
Left atrial appendage closure device size

# concept[].definition
The diameter of the left atrial appendage closure device as specified by its manufacturer.

# concept[].definition
The maximum distance from the left atrial appendage orifice (the plane between the left upper pulmonary vein ridge and the left circumflex artery), to the most distal point of the left atrial appendage cavity, measured during end-diastole in a 2D view of the left atrial appendage.

# concept[].display
Left atrial appendage landing zone major axis

# concept[].definition
The maximum diameter of the left atrial appendage measured 1cm to 1.5cm inferior to the orifice (the plane between the left upper pulmonary vein ridge and the left circumflex artery), during end-systole, in a 2D view of the left atrial appendage.

# concept[].definition
The maximum diameter of the left atrial appendage orifice (the plane between the left upper pulmonary vein ridge and the left circumflex artery), measured during end-systole, in a 2D view of the left atrial appendage.

# concept[].definition
The minimum diameter of the left atrial appendage orifice (the plane between the left upper pulmonary vein ridge and the left circumflex artery), measured during end-systole, in a 2D view of the left atrial appendage.

# concept[].definition
The perimeter of the left atrial appendage orifice (the plane between the left upper pulmonary vein ridge and the left circumflex artery), measured during end-systole, in a 3D en face view of the left atrial appendage.

# concept[].definition
vailable data indicates that diagnostics, analytics, and treatment best practices may be undefined or not aligned with sex-derived reference populations. Additional information may be available in the form of comments and/or observations.This concept and definition taken from http:​//hl7.org​/fhir​/extensions​/StructureDefinition-​patient-​sexParameterForClinicalUse.html.

# concept[].display
Subject Sex Parameters for Clinical Use Category

# concept[].display
Sex Parameters for Clinical Use Category Comment

# concept[].display
Sex Parameters for Clinical Use Category Reference

# concept[].definition
Clinically relevant measurements of patient Visual Field.

# concept[].definition
Clinically relevant measurements of Optic Disc.

# concept[].display
Circumpapillary Retinal Nerve Fiber Layer Key Measurements

# concept[].definition
Clinically relevant measurements of the Circumpapillary Retinal Nerve Fiber Layer.

# concept[].definition
Clinically relevant measurements of Macular Thickness.

# concept[].definition
Clinically relevant measurements of Gangion Cell Layer.

# concept[].definition
Clinically relevant measurements of Endothelial Cell Count.

# concept[].definition
Measurements of Ophthalmic Images based on a Region of Interest.

# concept[].definition
Indicator that measurements were made with ROI or grid positioned differently than used for a prior measurement set.

# concept[].display
Visual Field Global Deviation from Normal

# concept[].definition
Weighted average deviation from the age corrected normal visual field, as decibel. Corresponds to Global Deviation from Normal (0024,0066) in the Results Normals Sequence (0024,0064).

# concept[].display
Visual Field Localized Deviation From Normal

# concept[].definition
Weighted square root of loss variance in visual field, as decibel. Corresponds to Localized Deviation From Normal (0024,0068) in the Results Normals Sequence (0024,0064).

# concept[].definition
The ratio between the number of times patient responses occurred when no visual stimulus was present (false positive responses) and the number of trials presented. Corresponds to ratio of False Positives Quantity (0024,0060) to Positive Catch Trials Quantity (0024,0056) in the Visual Field Catch Trial Sequence (0024,0034).

# concept[].definition
Estimated percentage of all patient responses that occurred at a time when no visual stimulus was present (false positive responses) , as percent. Corresponds to False Positives Estimate (0024,0054) in the Visual Field Catch Trial Sequence (0024,0034).

# concept[].definition
The ratio between the number of times stimuli were not seen by the patient but were previously seen at a lower luminance earlier in the visual field test (false negative responses) and the number of trials presented. Corresponds to ratio of False Negatives Quantity (0024,0050) to Negative Catch Trials Quantity (0024,0048) in the Visual Field Catch Trial Sequence (0024,0034).

# concept[].definition
Estimated percentage of all stimuli that were not seen by the patient but were previously seen at a lower luminance earlier in the visual field test (false negative responses) , as percent. Corresponds to False Negatives Estimate (0024,0046) in the Visual Field Catch Trial Sequence (0024,0034).

# concept[].definition
The ratio between the number of times a patient loses visual fixation while maintaining a visual gaze on a single location and the number of trials presented. Corresponds to ratio of Patient Not Properly Fixated Quantity (0024,0036) to Fixation Checked Quantity (0024,0035) in Fixation Sequence (0024,0032).

# concept[].definition
Average macular thickness across all ETDRS subfields.

# concept[].definition
Ratio of the optic cup area to the optic disc area.

# concept[].definition
Ratio of the vertical diameter of the optic cup to that of the vertical diameter of the optic disc.

# concept[].definition
Ratio of the horizontal diameter of the optic cup to that of the horizontal diameter of the optic disc.

# concept[].definition
Area of the neuroretinal rim portion of the optic nerve head, or Bruch's Membrane Opening-based Minimum Rim Area (BMO-MRA).

# concept[].definition
Average width of the neuroretinal rim portion of the optic nerve head, or Bruch's Membrane Opening-based Minimum Rim Width (BMO-MRW).

# concept[].definition
Area of the cup portion of the optic nerve head.

# concept[].definition
Area of the optic disc or Bruch's Membrane Opening (BMO).

# concept[].definition
Volume of the cup portion of the optic nerve head.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , across the entire ROI (also denoted as the global RNFL thickness).

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the inferior sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the superior sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the temporal sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the nasal sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the nasal-superior sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the nasal-inferior sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the temporal-inferior sector as defined by the measurement method.

# concept[].definition
Average measured thickness of the retinal nerve fiber layer (RNFL) , i.e., the distance between the internal limiting membrane (ILM) and the Gangion Cell Layer (GCL) , in the temporal-superior sector as defined by the measurement method.

# concept[].definition
Ratio of the global retinal nerve fiber layer (RNFL) thickness measurement of the right eye to that of the left eye.

# concept[].definition
Region of interest circular area diameter, eliptical area major axis, or rectangular area major dimension, used for measurement of retinal layer thicknesses.

# concept[].definition
Region of interest eliptical area minor axis, or rectangular area minor dimension, used for measurement of retinal layer thicknesses.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 1, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the nasal superior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 2, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the nasal superior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 3, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is the nasal position.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 4, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the nasal inferior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 5, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the nasal inferior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 6. This is the inferior position.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 7, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the temporal inferior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 8, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the temporal inferior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 9, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is the temporal position.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 10, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the temporal superior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 11, in the clockwise direction for the right eye and the counter-clockwise direction for the left eye, as viewed from an anterior position. This is in the temporal superior quadrant.

# concept[].definition
Retinal nerve fiber layer thickness at clockface position 12. This is the superior position.

# concept[].definition
Average thickness of the ganglion cell layer across the entire ROI (also denoted as the global GCL thickness).

# concept[].definition
Minimum thickness of the ganglion cell layer over a single meridian crossing the annulus.

# concept[].display
Average ganglion cell thickness superior sector

# concept[].definition
Average ganglion cell thickness in the superior sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness nasal-superior sector

# concept[].definition
Average ganglion cell thickness in the nasal-superior sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness nasal sector

# concept[].definition
Average ganglion cell thickness in the nasal sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness nasal-inferior sector

# concept[].definition
Average ganglion cell thickness in the nasal-inferior sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness inferior sector

# concept[].definition
Average ganglion cell thickness in the inferior sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness temporal-inferior sector

# concept[].definition
Average ganglion cell thickness in the temporal-inferior as defined by the measurement method.

# concept[].display
Average ganglion cell thickness temporal sector

# concept[].definition
Average ganglion cell thickness in the temporal sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness temporal-superior sector

# concept[].definition
Average ganglion cell thickness in the temporal-superior sector as defined by the measurement method.

# concept[].display
Average ganglion cell thickness in posterior pole grid

# concept[].definition
Average ganglion cell thickness in the posterior pole grid, as a table of values.

# concept[].display
Ganglion cell and inner plexiform layers

# concept[].definition
Anatomic region including the ganglion cell layer (GCL) and the inner plexiform layer (IPL).

# concept[].definition
Anatomic region including the Ganglion cell layer (GCL) , the inner plexiform layer (IPL) , and the retinal nerve fiber layer (RNFL).

# concept[].definition
Measurement method on a circular ROI with four overlapping 180Â° semicircular sectors centered on vertical and horizontal axes (superior, inferior, nasal, temporal).

# concept[].definition
Measurement method on a circular ROI with four 90Â° sectors centered on vertical and horizontal axes (superior, inferior, nasal, temporal).

# concept[].definition
Measurement method on a rectangular ROI with four overlapping rectangular sectors (superior, nasal, inferior, temporal).

# concept[].definition
Measurement method on an elliptical annulus ROI, divided into six 60Â° sectors with boundaries beginning at 30Â° from vertical (superior, nasal-superior, nasal-inferior, inferior, temporal-inferior, temporal-superior). The outer ellipse of the annulus has a minor axis diameter equal to the Retinal ROI height and is aligned vertically, and a major axis diameter equal to the Retinal ROI width aligned horizontally. The dimensions of the inner ellipse of the annulus, centered on the fovea, are manufacturer specific.

# concept[].definition
Measurement method on a circular ROI, divided into six sectors - a 110Â° nasal sector and a 90Â° temporal sector centered on the fovea-Bruch's membrane opening (BMO) axis, and four 40Â° sectors (temporal-superior, nasal-superior, nasal-inferior, temporal-inferior).

# concept[].definition
Measurement method on a circular ROI, divided into six sectors - 90Â° nasal and temporal quadrants centered on the horizontal axis, and four 45Â° octants (temporal-superior, nasal-superior, nasal-inferior, temporal-inferior).

# concept[].definition
Measurement method on a rectangular ROI, divided into an 8x8 grid positioned symmetrically to the fovea-optic disc axis and centered on the optic disc.

# concept[].definition
Measurement method on a circular ROI, centered on the optic nerve head, with twelve measurements of retinal nerve fiber layer thickness made at 30Â° intervals on the circumference.

# concept[].definition
The density of endothelial cells present on the innermost surface of the cornea.

# concept[].definition
The sum of the areas of all macular atrophy lesions.

# concept[].definition
The plan meets the intended course of treatment as prescribed.

# concept[].definition
The plan has passed quality assurance checks.