| parent | Head+Neck>Circle of Willis+Carotid arteries | LP264360-1 |
| child | CTA Circle of Willis and Carotid arteries W contrast IV | 87856-1 |
| child | CTA Circle of Willis and Carotid arteries WO and W contrast IV | 87855-3 |
| PartDisplayName | en-US | Circle of Willis and Carotid arteries | Computed tomography angio | Radiology |
LOINC Version: 2.77
FHIR