Sudden visual loss, bilateral [H53.133], Reason for Study: ^Reason: ich vs contrast extravasation History: ha Brain MRIThere is no evidence of acute ischemic or hemorrhagic lesion on this scan.Specifically, subarachnoid space appears to be clear without evidence of hemorrhage or increased signal intensity indicating blood brain barrier disruption.Underlying brain shows multiple bilateral high signal intensity foci on periventricular white matter and centrum semiovale indicating non specific small vessel ischemic disease.The ventricles, sulci and cisterns are symmetric and unremarkable. The gray-white matter differentiation is normal. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. The mastoid air cells are clear.There is a retention cyst on the right side of sphenoid sinus and minimal mucosal thickening on the left maxillary sinus.Brain MRA3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate subtle luminal irregularities on bilateral distal ICAs and PCAs indicating atherosclerotic changes. Otherwise there is no evidence of intracranial arterial aneurysm. No evidence of intracranial arterial luminal stenosis or occlusion.Right Pcom artery is seen but the left PComA is not visualized.Acom artery is patent.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Non specific small vessel ischemic disease.3. Minimal atherosclerotic changes of intracranial arterial system.4. No evidence of intracranial arterial occlusion, significant stenosis. No intracranial aneurysm. 