Department of Diagnostic Imaging, Foothills Medical Centre, Calgary, Alberta, Canada.
J Neuroimaging. 2010 Apr;20(2):180-2. doi: 10.1111/j.1552-6569.2008.00316.x. Epub 2008 Oct 21.
We describe a case of asymptomatic extravasation of iodinated contrast material into the sulci on digital subtraction angiography following carotid angioplasty and stenting resulting in sulcal hyperdensity on computed tomography (CT). We believe the mechanism for this observation is hyperperfusion injury and that in the absence of any associated clinical signs, it should not be considered alarming for subarachnoid hemorrhage.
我们描述了一例颈动脉血管成形术和支架置入术后数字减影血管造影中碘造影剂无症状性外渗至脑沟，导致 CT 上脑沟高密度的病例。我们认为这种观察结果的机制是过度灌注损伤，而且在没有任何相关临床症状的情况下，不应将其视为蛛网膜下腔出血的警报。
