Magnetic Resonance Angiography (MRA) - Intracranial - AP View

Left Internal Carotid Artery

Right Internal Carotid Artery

Middle Cerebral Arteries

"M1" Segment of the MCA

Middle Cerebral Artery Bifurcation

Anterior Cerebral Arteries

"A1" Segment of the ACA

Anterior Communicating Artery

Left Vertebral Artery

Right Vertebral Artery

Posterior Inferior Cerebellar Arteries

Anterior Inferior Cerebellar Artery

Superior Cerebellar Arteries

Basilar Artery

Top of the Basilar

Posterior Cerebral Arteries

Circle of Willis

MRA Intracranial Projection. In this view, a "textbook" picture of the Circle of Willis can be seen. This view is especially good to assess for narrowing of the vertebral and basilar arteries, and look for aneurysms which typically arise from arterial bifurcations at or near the Circle of Willis.

Revised 11/30/06
Copyrighted 2006. David C Preston