Cerebral infarction, unspecified [I63.9], Reason for Study: ^Reason: stroke History: left arm weakness Brain MRI_Patient motion degraded exam quality.There is a focal restricted diffusion on the right internal capsule posterior limb without evidence of associated susceptibility artifacts indicating acute ischemic infarct without hemorrhagic transformation.Underlying brain shows minimal FLAIR/T2 high signal intensity on periventricular white matter indicating nonspecific small vessel ischemic disease. 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. The midline structures and cranial-cervical junction are normal. The mastoid air cells are clear.Mucosal thickening of the right maxillary sinus, sphenoid sinus and small retention cyst on the left maxillary sinus are seen.Brain MRA3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate relatively smaller vertebrobasilar system. Bilateral PCAs are fetal origin. No evidence of intracranial arterial luminal stenosis or aneurysm on bilateral ICAs, MCAs and ACAs.
1. Acute ischemic infarction on the right internal capsule posterior limb without evidence of hemorrhagic conversion.2. No evidence of intracranial arterial luminal stenosis. Relatively small vertebrobasilar system which is normal variation associated with bilateral fetal PCAs. 