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FIG 1. A 74-year-old man with right hemiparesis and aphasia. Intravenous r-tPA was administered after nonenhanced CT was performed 2.5 hours after symptom onset.
A, DW image and ADC map obtained 3 hours after CT show ischemic edema in the left MCA territory. TTP, rCBV, and rCBF maps show perfusion abnormality.
B, Gd-enhanced T1-weighted image (T1WI) shows a focal enhancing area in the left basal ganglia (arrow). Follow-up nonenhanced CT scan (NCT) depicts a small parenchymal hematoma in the left basal ganglia that corresponds to the enhancing area.
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