门静脉血栓的MRI诊断

目的探讨MRI诊断门静脉血栓（PVT）的价值。方法回顾性分析经临床随访证实的9例PVT患者的资料,所有病例均行常规MRI平扫及三维容积超快速多期动态增强扫描（LAVA）。结果 9例肝PVT中,4例位于门静脉左支,2例门静脉右支,3例位于门静脉主干,其中1例同时累及门静脉右支。MRI均能显示门静脉及其分支内血栓异常信号,平扫T1WI及T2WI流空信号消失,增强扫描各期血栓均无强化,管腔内出现充盈缺损。结论 MRI是诊断PVT的有效影像学检查方法。

MRI Diagnosis of Portal Vein Thrombosis

Objective To discuss the diagnostic value of MR Imaging for portal vein thrombus. Methods Retrospective analysis of 9 cases of portal vein thrombosis confirmed by clinical follow-up, all the cases were performed by plain scan and Liver Acquisition with Volume Acceleration MR1. Results During these 9 PVT, 4 cases thrombus located in the left branch of portal vein, 2 in the right branch of portal vein,3 in the trunk of portal, and I case two branchs of portal compromised. MRI can well demonstrate the abnormal signals of the thrombus in the portal vein or its branch, normal flowing void disappeared in the TIWI and T2WI of the MR plain scan, and there were no enhancement in any phases of the thronbus, showed filling detect within the lumen. Conclusion MRI is the effective radiographic technique for the diagnosis of PVT.