Galen静脉血栓的CT、MRI诊断

目的探讨CT及MRI对Galen静脉血栓的诊断价值。材料和方法8例患者行CT/MRI扫描，观察、比较发病后3～30天的影像及其变化。结果CT主要表现为双侧丘脑、内囊及基底节区的对称性低密度(7/8)；MRI主要表现为双侧丘脑、内囊及基底节区对称性长T1、长T2及质子密度高信号(4/4)；7例发病后3～11天行CT或MRI检查，5例在Galen静脉及直窦起始部见静脉栓子，CT表现为高密度，MRI的影象变化比较复杂。13天后栓子均消失。结论Galen静脉血栓的CT及MRI表现有其特征性，能为临床诊断提供可靠依据。

CT and MRI Diagnosis of Vein of Galen Thrombosis

Purpose: to evaluate the value of CT and MR in diagnosis of GVT. Materials and Methods: 8 patients were examined with CT/MR. The findings of CT and MR imaging were observed and compared for period 3 - 30 days after the onset of the disease. Results: The main demonstration of GVT on CT were bilateral symmetric hypodesity of thalami, internal capsules and hasal gangalia (7/8);on MRI GVT mainly presented bilateral symmetric; long T_1, long T_2 signals and high signals of N(H) (4/4); Thrombi were seen within vein of Galen and original of straight sinus in 5 cases in a pened of 3 - 11 days after onset of the disease, it were displayed hyperdensity on CT and varied complicatedly on MRI, and disappeared after 13 days. Conclusion: CT and MRI findings of GVT are characteristic, and may be reliable evidences for clinical diagnosis of GVT.