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FIG 2. A 57-year-old woman with right hemiparesis and aphasia. Intravenous r-tPA was administered after nonenhanced CT was performed 1.5 hours after symptom onset.
A, DW image and ADC map obtained 3.7 hours after CT show ischemic edema and perfusion abnormality in the left MCA territory. TTP and rCBF maps show reperfusion in the area of parenchymal enhancement.
B, Gd-enhanced T1-weighted image (Gd-T1WI) shows parenchymal enhancement in the left perisylvian cortex and basal ganglia (arrowheads). Enhancing lesion in the right temporal lobe (white arrow) indicates subacute infarction. Patient had atrial fibrillation and infarction 2 months earlier. Follow-up EPI-GRE image shows focal hemorrhage (hemorrhagic infarct type 1) in only the left basal ganglia (black arrow). No hemorrhage is present in the rest of area of parenchymal enhancement in the left MCA territory and in right temporal lobe on the enhanced T1-weighted image.
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