脑动静脉畸形磁共振血管成像的临床应用

Clinical application of Different MRA Methods in Diagnosing Intracranial AVM

目的：评价ＭＲＡ不同成像方法对动静脉畸形（ＡＶＭ）的诊断价值，探讨最佳方法选择。方法：２６例ＡＶＭ患者分别作常规ＭＲ成像及ＭＲＡ成像，其中２６例均行２ＤＰＣ检查，８例行３Ｄ－ＴＯＦ检查，１８例行３Ｄ－ＭＯＴＳＡ检查，８例行３ＤＰＣ检查。比较各序列ＡＶＭ的血管巢、供血动脉及引流静脉的显示情况。结果：ＭＲ图像及ＭＲＡ各序列图像均满意地显示了血管巢。２ＤＰＣ对供血动脉及引流静脉显示率分别为６５．４％和８０．８％；３Ｄ－ＴＯＦ对供血动脉及引流静脉显示率为７５．０％和１２．５％；３Ｄ－ＭＯＴＳＡ显示率为１００％和３３．３％；３ＤＰＣ显示率为８７．５％和１００％。结论：３Ｄ－ＭＯＴＳＡ应作为诊断ＡＶＭ的主要ＭＲＡ检查序列，低流速的２ＤＰＣ序列作为辅助序列，结合ＳＥ图像综合观察。

Objective:This paper was to evaluate and optimize different arteriovenous malformation (MRA) methods in diagnosing AVM. Methods:26 patients with AVM were examined respectivaly with conventional MR and MR angiography. All of the 26 cases were studied with 2DPC. 8cases with 3DTOF, 18 cases with 3DMOTSA. and 8 cases with 3DPC. Then, the pathologic blood vessels. the feeding artery, and draining vein of AVM were compared according to the images of different sequences. Results:The typical characteristics of pathologic blood vessels were revealed successfully with different sequences f both MR and MRA. 2DPC depicted the feeding artery and draining vein in 65.4% and 80.8% of the cases 3D-TOF in 75% and 12.5% of the cases and 3D-MOTSA in 100% and 33.3% of the cases respectively. Conclusion:3D-MOTSA could be selected as the optimal sequence in diagnosing AVM and 2DPC as a complemental procedure for the lower vascular flor velocity We could obtain a comprehensive pre-operationcd diagnosis of AVM with 3D-MOTSA or 2DPC, the combined with SE images.