 MRI BRAIN:  There is no diffusion abnormality to indicate an acute infarct or susceptibility abnormality to indicate hemorrhage. No intracranial mass or mass effect. The ventricles and sulci are within normal limits for age. No extra-axial fluid collection is identified. The midline structures and craniocervical junction are within normal limits. There is no abnormal pathologic enhancement.MRA HEAD: The intracranial internal carotid arteries demonstrate no significant stenosis. The middle and anterior cerebral arteries are also patent. Just beyond the anterior communicating artery there is a 2 mm outpouching from the A2 segment of the right ACA which projects inferiorly and medially. This does not give rise to a visualized vessel. The differential includes infundibulum versus small aneurysm. The vertebral arteries, basilar artery, and posterior cerebral arteries also are patent with no significant stenosis. MRA NECK: There is a separate origin of the left subclavian artery, left common carotid artery, and brachiocephalic artery from the arch. The common carotid arteries and cervical internal carotid arteries are normal in course and caliber. The right vertebral artery is smaller than the left, likely congenital.
1.No acute intracranial abnormality.2.2 mm outpouching from the A2 segment of the right ACA may represent either an infundibulum or small aneurysm. 3.No flow-limiting stenosis of the vasculature of the brain or neck.