Weakness [R53.1], Reason for Study: ^Reason: cva History: left sided sensory changes. Brain MRIThere is no restricted diffusion on diffusion weighted image indicating no evidence of acute ischemic infarct.T2-weighted axial scan as well as T1 weighted sagittal scan of brain shows no evidence of abnormal finding.In particular, the ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection on this scan. 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 wide neck vascular bulge on the top of basilar artery. The size of vascular bulge is measured about 1.6mm x 3.3mm suggesting possible top of basilar artery aneurysm. However, the spatial resolution of this brain MRA is low thus cannot be confirmatory for this small size lesion. Therefore, if clinically indicated, CT angiography can be considered for further imaging evaluation.Otherwise, bilateral ICAs, MCAs and ACAs appear to be normal.
1. Limited study. No evidence of acute ischemic lesion on this scan. No evidence of mass or fluid collection. Ventricular system appears to be normal.2. Possible wide neck top of Basilar artery aneurysm (1.6mm x 3.3mm). Otherwise unremarkable. CT angiography can be considered for further imaging evaluation if clinically indicated. 