脑静脉窦血栓形成的MRI诊断价值  

The diagnostic value of MRI in cerebral venous sinus thrombosis

作　　者：迟淑萍[1] 李丽新[2] 李蕾[1] 丛林[3] 

机构地区：[1]胜利石油管理局胜利医院影像中心,山东东营257055 [2]潍坊医学院附属医院CT室,山东潍坊261053 [3]山东省医学影像研究所,山东济南250021

出　　处：《医学影像学杂志》2009年第7期826-828,共3页Journal of Medical Imaging

摘　　要：目的:评价MRI对脑静脉窦血栓形成的诊断价值。方法:14例脑静脉窦血栓患者均行MRI平扫,其中9例行MRV或MRA检查,6例增强。7例患者同时接受CT检查。结果:①常规MRI检查表现为静脉窦流空信号消失(n=13/14),急性期(n=2/14)T1WI呈等信号,T2WI呈低信号;亚急性期(n=7/14)T1WI、T2WI均呈高信号;慢性期(n=4/14)T1WI、T2WI信号减低,表现复杂。增强扫描可见充盈缺损(n=6/6)及脑回样强化(n=1/6);②MRV(n=9/9)表现为受累静脉窦血流信号减弱或消失;③MRA检查(n=1/1)受累静脉窦异常显影;④7例同时行CT和MRI检查的患者共22个静脉窦受累,CT检出率45.4%,MRI检出率100%。结论:常规MRI联合MRV对诊断脑静脉窦血栓形成具有高度敏感性,是诊断脑静脉窦血栓形成的首选检查方法。Objective：To assess the value of MRI in the diagnosis of cerebral venous sinus thrombosis （CVST）. Methods： 14 cases of CVST were scanced with MRI, trine with MRV or MRA, and six were subjected to contrast-eahancement examination. Seven cases were examined by both CT and MRI. Results： ① Normal flow empty effect disappeared on conventional MRI scans （n = 13/14）, acute phase （n = 2/14） showed moderate signal on T1WI and low signal on T2WI; Subaeute phase （n =7/14） typically demonstrated high signal on T1WI and T2WI; Signal intensity gradually became lower in Chronic phase （n = 4/14）, presenting variably. Filling defect and gyri-shape enhancement signal could be found on enhancement imaging （n = 6/6, n = 1/6） ; ② The signal of the involved venous sinus disappeared or weakened on MRV （ n = 9/9） ; ③ MRA （n = 1 / 1 ） showed not only the artery, but also thrombosed venous sinus; ④ The positive rate of MRI （100%） was higher than that of CT （45.4%） in the 7 patients who were scanned by both CT and MRI. Conclusion： Conventional MRI and MRV can be viewed as the primary methods for examining cerebral venous sinus thrombosis because of the high sensitivity.

关 键 词：静脉窦血栓 脑静脉闭塞 磁共振血管成像 

分 类 号：R743[医药卫生—神经病学与精神病学] R814.42[医药卫生—临床医学]