A–C, DWI scan (A) shows acute infarction involving the left cerebellar hemisphere, which appears iso- to hyperintense on the b0 EPI scan (B). A–C, DWI scan (A) shows acute infarction involving the left cerebellar hemisphere, which appears iso- to hyperintense on the b0 EPI scan (B). A focus of prominent hypointensity indicative of hemorrhage is seen in the medial portion of the infarction (vermis) on the GRE image (C) Doris D. M. Lin et al. AJNR Am J Neuroradiol 2001;22:1275-1281 ©2001 by American Society of Neuroradiology