 Several sequences are mildly limited by motion.BRAIN: Encephalomalacia involving the inferior aspect of the right cerebellar hemisphere is compatible with a chronic PICA territory stroke and appears similar to prior. No restricted diffusion to suggest acute ischemic infarction.There is no evidence of intracranial hemorrhage or mass. Several scattered foci of abnormal T2/FLAIR hyperintensity within the basal ganglia, periventricular and subcortical white matter, and cerebellum are nonspecific and likely age related. A prominent perivascular space is present along the right anterior commissure. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The skull, paranasal sinuses, and scalp soft tissues are unremarkable.MRA HEAD: The intracranial internal carotid arteries are normal in course and caliber. The middle and anterior cerebral arteries are unremarkable. The posterior communicating arteries are small in caliber. There is a short segment of mild narrowing involving the right V4 segment just proximal to the basilar artery. There is a short segment of mild narrowing of the inferior aspect of the basilar artery. The posterior cerebral arteries are normal in course caliber. No aneurysms are detected.
1.Chronic right cerebellar infarct, not significantly changed compared to prior CT scan. 2.No evidence of acute ischemic cerebral infarction or hemorrhage. 3.Mild short segment narrowing involving the right intracranial vertebral and basilar arteries. No intracranial aneurysms detected.