The posterior cerebral arteries branch off from the basilar artery. The left and right PCAs form the longest sections of the circle of Willis. The internal carotid arteries are located in the ...

Prior to pursing an intervention, the anatomy of the anterior and posterior ... vessel that joins the contralateral vertebral artery to form the basilar artery. This segment is infrequently ...

The vertebrobasilar arterial system is located at the back of your brain and includes the vertebral and basilar arteries. These arteries supply blood, oxygen, and nutrients to vital brain ...

The vascular anatomy, clinical presentation, and severity of neurologic deficit in patients with basilar-artery occlusion differ from those in patients with anterior-circulation strokes.

Note the abrupt cutoff at the top of the basilar artery. There is a nearly complete absence of any branches off the posterior cerebral arteries. This is the angiographic picture of an embolus, in this ...