Personal history of other diseases of the circulatory system [Z86.79], Reason for Study: ^Reason: evaluate for aneurysm History: headache Brain MRIThere is no evidence of acute ischemic or hemorrhagic lesion on this scan. A small foci of susceptibility lesion on the right frontal lobe is likely represent prior ventriculostomy tube track, unchanged since prior scan.The ventricles, sulci and cisterns are symmetric and unremarkable. 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. 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 except the distal right vertebral artery area cannot be evaluated due to metallic artifacts.Neck MRA2D and 3D TOF MRA neck images with maximum intensity projections of the cervical vasculature were obtained. There is normal flow enhancement through the bilateral common carotid, carotid bifurcations, internal/external carotid, and vertebral arteries. Aortic arch and proximal portion of major arteries including bilateral vertebral artery ostia are not well visualized.
1. No evidence of acute ischemic or hemorrhagic lesion.2. No evidence of intracranial arterial aneurysm.3. No evidence of extracranial arterial luminal stenosis.4. Metallic artifacts on the right distal vertebral artery consistent with prior surgical clipping. 