Fig. 1
From: Vasoconstriction and hyperperfusion syndrome after carotid artery stenting
A Diffusion-weighted imaging performed upon admission revealed multiple cortical cerebral infarctions. B, C Carotid artery stenting was performed for internal carotid artery stenosis (red arrows). D Preoperatively, atherosclerotic stenosis was observed in the left anterior cerebral artery. Digital subtraction angiography (DSA) was performed at the end of the surgery, and the results showed that the left middle cerebral artery (MCA) was dilated. E DSA performed 1 day after the surgery revealed a localized vasoconstriction mainly of the left MCA. F One week after the surgery, CT perfusion revealed hyperperfusion, with a cerebral blood flow contralateral ratio of greater than 1.3. CT perfusion was scanned using a multidetector CT scanner with 80 detector rows (Aquilion Prime, Canon, Japan) and DSA was performed with biplane equipment (Infinix Celeve-i INFX-8000 V, Canon, Japan). MRI scanner was 1.5 T scanner (Magnetom Avanto fit, Siemens Healthcare, Germany)