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Fig 4. A 66-year-old man with symptomatic right internal carotid artery stenosis (85%) exhibiting hyperperfusion syndrome after CEA. Preoperative PWI and SPECT images show elevation in CBV (A) and a decrease in CBF (B), respectively, in the right cerebral hemisphere where hyperperfusion is observed on SPECT immediately after CEA (C). This patient developed confusion and left motor weakness 5 days after surgery.
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