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Fig. 3 —84-year-old woman (patient 2) with large perfusion
abnormality in left middle cerebral artery territory. Cerebral blood volume
(CBV) decreases focally in left periventricular region (arrows),
whereas cerebral blood flow (CBF) decreases more widely (arrows).
Mean transit time (MTT) and time to peak (TTP) are also prolonged
(arrows). Twenty-millimeter-coverage perfusion CT at basal ganglia
level also detected lesion. Follow-up MR angiography (MRA) and
diffusion-weighted imaging (DWI) show occlusion of left internal carotid
artery through left middle cerebral artery (arrow) and large acute
infarction in left corona radiata (arrows), respectively.
