Evaluate for stenosis, aneurysms History: SAH MRI of the brainFoci of diffusion restriction are present along the central portion of the body of the corpus callosum as well the left calloso-cingulate junction.The CSF spaces are appropriate for the patient's stated age with no midline shift. No abnormal mass lesions are appreciated intracranially. No intracranial hemorrhage is identified. No edema is identified within the brain parenchyma.A small amount of subarachnoid blood adjacent to the left occipital lobe is less conspicuous on this MRI. There are only very subtle findings that could be suggestive of subarachnoid blood products given the CT findings.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses are clear. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.MRA brain:Antegrade flow is present in the distal internal carotid arteries, the distal vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries. The right vertebral artery is larger than the left vertebral artery. The left jugular is hypoplastic distal to the origin of the left posterior inferior cerebellar artery.There is a mild degree of periventricular and subcortical punctate hyperintense white matter lesions present identified on the FLAIR and T2 images.There is no evidence for intracranial aneurysm or cerebrovascular occlusion.The anterior communicating artery is identified. The posterior communicating arteries are not readily identified. The vertebral arteries are similar in size.MRV brain:The dural venous sinuses are patent. Straight sinus, internal cerebral veins and basal veins are identified and appear patent.
1.Diffusion restriction along the central portion of the corpus callosum is present and is a rather unusual finding. Although infarction and diffuse axonal injury cannot be excluded rare entities such as Susac disease or Machiafavi Bignami Disease in the appropriate clinical setting should be considered.2.A small amount of subarachnoid blood adjacent to the left occipital lobe is less conspicuous on this MRI.3.No evidence for cerebrovascular occlusive disease.4.No evidence for intracranial aneurysm.5.MR venogram of the brain is within normal limits.6.Findings were discussed with Dr Ardelt