| parent | Head+Neck>Circle of Willis | LP200343-4 |
| child | MRA Circle of Willis | 37235-9 |
| child | MRA Circle of Willis W contrast IV | 37254-0 |
| child | MRA Circle of Willis WO and W contrast IV | 69161-8 |
| STATUS | NotStated |
| PartDisplayName | en-US | Circle of Willis | MR angiogram | Radiology |
LOINC Version: 2.81