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Figure 1: DWI, ADC, fluid-attenuated inversion recovery (FLAIR) and magnetic resonance angiography (MRA) at 3, 11 and 72 hours after symptom onset. The DWI hyperintense lesion observed on admission initially decreased in size and then augmented; ADC hypointense signal normalizes after t-PA and reappeared at 72 hours. A normal FLAIR sequence was noticed on admission, a hyperintense signal appeared at 11 and 72 hours. MRA exhibited occlusion of the left middle cerebral artery on admission. After t-PA, recanalization was observed at 11 hours and persisted on the latter MRA

Figure 1: DWI, ADC, fluid-attenuated inversion recovery (FLAIR) and magnetic resonance angiography (MRA) at 3, 11 and 72 hours after symptom onset. The DWI hyperintense lesion observed on admission initially decreased in size and then augmented; ADC hypointense signal normalizes after t-PA and reappeared at 72 hours. A normal FLAIR sequence was noticed on admission, a hyperintense signal appeared at 11 and 72 hours. MRA exhibited occlusion of the left middle cerebral artery on admission. After t-PA, recanalization was observed at 11 hours and persisted on the latter MRA