Transient arterial occlusion of retina [362.34], Reason for Study: ^Reason: pt with fleeting vision loss, need MRI/MRA head and neck to r/o intracranial or vascular lesion History: pt with fleeting vision loss, need MRI/MRA head and neck to r/o intracranial or vascular lesion. Brain MRI:No evidence of acute ischemic or hemorrhagic lesion.Multiple scattered high signal intensity on FLAIR imaging on bilateral periventricular white matter indicate nonspecific 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, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.Brain MRA3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate normal ICAs, MCAs and ACAs. Vertebrobasilar system appears to be normal.Neck MRA3D MRA neck post-gadolinium images with maximum intensity projections of the cervical vasculature demonstrate normal flow enhancement in a normal aortic arch origin of the right brachiocephalic, left common carotid, and left subclavian arteries. The right vertebral artery origins is normal. The left vertebral artery originated from the aortic arch directly.There is normal flow enhancement through the bilateral common carotid, carotid bifurcations, internal/external carotid, and vertebral arteries.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Minimal nonspecific small vessel ischemic disease.3. Normal brain MRA, normal neck MRA. 