| parent | Head+Neck | LP33999-1 |
| child | Circle of Willis | Computed tomography angio | Radiology | LP404973-2 |
| child | Circle of Willis | MR angiogram | Radiology | LP404974-0 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Head+Neck>Circle of Willis |
| DisplayName | en-US | Circle of Willis |
LOINC Version: 2.78