 The intracranial internal carotid arteries demonstrate no significant stenosis. The middle and anterior cerebral arteries are also patent. The left A1 segment is hypoplastic with bilateral A2 segments being supplied by the right A1; this finding is a normal variant. The vertebral arteries, basilar artery, and posterior cerebral arteries also are patent with no significant stenosis. No evidence of aneurysms or vascular malformations. Anterior communicating artery is patent. Right posterior communicating artery is patent. Left posterior communicating artery is not definitively seen.MRV HEAD
There is no significant stenosis in the intracranial vasculature. Neck MRA and brain MRV are suboptimal without contrast; there is however no evidence of venous sinus thrombosis or stenosis in the vasculature in the neck. 