 There is decreased flow related enhancement within the center of the right M2 segment, decreased caliber and nonvisualization of the normal distal vasculature especially along the Sylvian fissure. A tiny vessel is identified extending to the right posterior basal ganglia hemorrhage, possibly a small lenticulostriate branch (series 2512, image 175). The left middle cerebral artery is unremarkable. The intracranial internal carotid arteries are normal in course and caliber. The anterior cerebral arteries are unremarkable. The vertebral arteries, basilar artery, and posterior cerebral arteries are normal in course and caliber. There is no evidence of aneurysm.MRA NECK
1.Decreased flow related enhancement within the right M2 segment, decreased caliber and loss of normal distal vasculature, consistent with known thrombus.2.Small vessel identified extending to the right basal ganglia hemorrhage, probable lenticulostriate branch, which could relate to early collateral recruitment.