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Head MRI on admission (a–c) and control head CT scan after symptom progression on day 4 (d). a An axial FLAIR image showing an acute infarct in the right putamen (arrow). b A diffusion-weighted image demonstrating restricted diffusion of the lesion, consistent with an infarct. c A small haemorrhage (black dot) is noted within the infarcted area in a T2∗-weighted image. d Progression of the haemorrhagic transformation in the putamen on day 4 in CT.
