Department of Neurology, University of Missouri-Healthcare, CE-507 5 Hospital Dr, Columbia, MO 65212, USA.
J Vasc Interv Radiol. 2010 Feb;21(2):281-4. doi: 10.1016/j.jvir.2009.10.022. Epub 2009 Dec 24.
Unenhanced computed tomography (CT) revealed hyperattenuating lesions in two patients with acute stroke immediately after clot retrieval with the Merci device in one patient and after intraarterial thrombolysis in the other. These areas of hyperattenuation were noted in the middle cerebral artery territory in the first patient and involving the brainstem, cerebellum, and tentorium in the second. Both were falsely interpreted as subarachnoid hemorrhage. The area of hyperattenuation resolved within a few hours in both patients, reflecting contrast medium extravasation/leakage. This report highlights the need to improve physician skill in recognizing contrast medium extravasation that is common following neuroendovascular procedures, which are becoming commonplace in modern day medicine.
未增强计算机断层扫描（CT）显示，1 例患者在 Merci 装置取栓后和另 1 例患者接受动脉内溶栓后即刻发生急性卒中，均可见到高强化病灶。第 1 例患者的高强化病灶位于大脑中动脉区域，第 2 例患者累及脑干、小脑和小脑幕。两者均被误诊为蛛网膜下腔出血。2 例患者的高强化区域均在数小时内消失，提示存在对比剂外渗/渗漏。本报告强调了需要提高医生识别神经介入手术后常见的对比剂外渗的技能，这种情况在现代医学中越来越常见。
