MRA shows the following:
- markedly hypoplastic left internal carotid artery supplying the left ophthalmic artery
- hypoplastic/aplastic A1 segment of the left ACA
- the left posterior cerebral artery supplies the left middle cerebral artery via a large posterior communicating artery
- normal appearance of the anterior and middle cerebral arteries
- normal appearance of vertebrobasilar and posterior cerebral arteries