SEARCH Articles Figures Tables EHffusion-perfusion mismatch. The patient is a 71-year-old man with 2 h of aphasia and right hemiparesis. The DWI image shows an acute infarct in the left MCA territory. Although there may be a small area of normal or decreased CBV in the most anterior portion of the infarct short arrows in CBV map , most of the infarct demonstrates elevated CBV . The infarct remains hypoperfused, as evidenced by low CBF that is [Publishers Imprint]