Acute superior cerebellar artery (SCA) infarction

Acute superior cerebellar artery (SCA) infarction, with an accompanying small unilateral pontine infarct. Hypodensity is seen on CT in a portion of the SCA territory, with hyperintensity on axial T2-weighted MR (and sagittal FLAIR), both due to vasogenic edema. The presence of restricted diffusion is confirmed on the ADC map, reconstructed from the diffusion scans. There is an additional small left sided pontine infarct, best seen on MR. The patient had a patent foramen ovale, likely the etiology for these infarcts. On imaging 1 hour after onset of symptoms (not shown), there was only restricted diffusion. The images shown are from follow exams acquired 1 day (CT) and 3 days (MR) following clinical presentation.

Acute superior cerebellar artery infarction, with an accompanying small unilateral pontine infarct

Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)