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FIG 1. Continued.—Admission CTA shows an occluded left P1 segment, which had recanalized but remained focally stenotic on follow-up MR angiography 3 days later. Follow-up DW image shows completed stroke in the predicted left thalamic infarct core. The penumbra did not infarct, most likely because of early recanalization; the MTT and rCBF abnormalities were however, categorized as false-positive since delayed MR imaging was selected as the criterion standard.
