低场MRI对脑静脉窦血栓形成的诊断价值

目的探讨低场MRI对脑静脉窦血栓形成的诊断价值。方法回顾性分析5例脑静脉窦血栓形成患者的影像学资料。结果受累的静脉窦有上矢状窦4例,横窦1例。常规MRI可见受累静脉窦血液流空信号消失,静脉窦内信号高低不一,2例脑实质内出现静脉性脑梗死表现,其中1例合并出血。增强扫描3例静脉窦内出现充盈缺损及静脉窦壁强化表现,1例脑实质内出现脑回样强化。结论低场MRI对诊断脑静脉窦血栓形成有意义。

The Diagnstic Value of Low Field MR in Cerebral Venous Sinus Thrombosis

Objective To evaluate the diagnustic value of low field MPI for intracerebral venous sinus throinbosis. Methods The imaging data were retrospectively analyzed in 5 cases of sinus thrombosis. Results The involved intracerebral venous included 4 superior sagittal sinus and 1 transverse sinus. Conventional MRI showed the flow void signal of the venous sinus disappeared and abnormal signals were found. 2 eases had venous infarction in brain parenchyma. Among them, 1 case was combined with hemorrhage. Gadolinium-enhanced MRI showed the filing defect in venous sinus and enhancement effect of sinus wall in 3 cases and gyri-shape en- hancement signal in brain parenchyma in 1 case. Conclusions Low field MR is a valuable modality for diagnosis of cerebral venous sinus thrombosis.