 There is marked attenuation of the left middle cerebral artery, with near-complete occlusion of portions of the M1 segment. The A1 segment of the right anterior cerebral artery is hypoplastic. The intracranial internal carotid arteries are normal in course and caliber. The distal right posterior cerebral artery is diminutive. The vertebral arteries, basilar artery, and left posterior cerebral artery are normal in course and caliber. No aneurysm is identified.MRA NECK
1.Acute/subacute infarctions in the bilateral MCA and PCA territories, left greater than right, likely of embolic etiology.2.Marked narrowing/stenosis of the left middle cerebral artery, particularly the M1 segment.3.Grossly stable appearance of focal stenosis of the left V1 segment of the left vertebral artery, mild narrowing of the proximal left carotid bulb, and moderate narrowing of the distal right common carotid artery and right proximal carotid bulb.