摘要
目的探讨磁共振的常规扫描序列和三维相位对比法MR静脉造影(3 D-PC法MRV)对脑静脉窦血栓的诊断价值。方法共收集34例临床确诊的脑静脉窦血栓病例,男15例,女19例。年龄1～71岁,中位年龄38岁。所有病例均行常规MR序列,3 D-PC法MRV扫描;急性期(1～5天)脑静脉窦血栓7例;亚急性期(6～21天)18例,慢性期(>21天)9例。结果急性期脑静脉窦血栓信号T1WI以等低信号为主,T2WI以低信号为主;亚急性期T1WI以高信号为主,T2WI呈低或高信号;慢性期T1WI表现为等或低信号,T2WI以高信号或流空信号。3 D-PC法MRV主要表现为脑静脉窦的闭塞或充盈缺损。同时14例患者合并有脑实质异常,出血9例,缺血水肿5例。结论常规MR序列与3 D-PC法MRV显示脑静脉窦血栓具特征性,可做为理想的检查手段。
Objective To evaluate the value of conventional magnetic resonance （MR） and 3-dimensional phase-cantrast magnetic resonance venography （3D-PC MRV） in diagnosing cerebral venous thrombosis （CVT）. Methods We had col- lected 34 CVT and definited by clinic, inchnding 15 cases, 19 females, aged from 1 to 71 years old, with a median age of 38 years. All of these underwent conventional MR and 3D-PC MRV examination. There were 7 cases in the acute stage （1 ~5 days）, 18 cases in the subacute stage （6~21 days）, and 9 cases in the chronic stage （〉21 days）. Results The most of acute CVT are iso or hypointense to gray matter on T1 WI and hypointense on T2 WI; the most of the subacute CVT are hyperintense on T1 WI, and hypointense or hyperintense on T2 WI; chronic CVT is iso- or hypointense on TI WI, and hy- perintense or flow voids signal on T2 WI. All thrombosed segments present filling defect on 3D-PC MRV. 14 of 34 patients exhibit parenchyma change, such as haemorrhage（9） and ischemia（5）. Conclusion Conventional MR and 3D-PC MRV are ideal technique due to characteristics on diagnosis of CVT.
出处
《医学影像学杂志》
2012年第11期1779-1783,共5页
Journal of Medical Imaging
关键词
脑静脉窦血栓
磁共振成像
Cerebral venous thrombosis
Megnetic resonance imaging
