Typically, two vertebral arteries join and form the basilar artery. The vertebrobasilar system supplies the brainstem and has branches to the cerebellum. The basilar artery typically bifurcates ...

Although no blood flow was supplied from the bilateral VAs, the basilar artery ... M, male; MRA, MR angiography; PICA, posterior inferior cerebellar artery. Shoko M. Yamada, MD, Department of ...