磁敏感加权成像和三维对比增强MR静脉成像对上矢状窦旁桥静脉的显示及比较  

Detection of bridging veins draining into superior sagittal sinus by using susceptibility weighted imaging and three dimensional contrast enhancement MR venography

作　　者：夏春华[1] 陈丹[2] 陈兵[1] 汪娅军[1] 夏仕勇[1] 刘文利[1] 张振华[1] 王慧[1] 吴玲巧[1] 

机构地区：[1]安徽医科大学第三附属医院合肥市第一人民医院影像中心,230061 [2]安徽医科大学解剖教研室

出　　处：《中华放射学杂志》2011年第11期1019-1022,共4页Chinese Journal of Radiology

摘　　要：目的比较磁敏感加权成像（SWI）和三维对比增强MR静脉成像（3D—CEMRV）技术对上矢状窦旁桥静脉的显示能力，为神经外科手术的术前影像学检查提供依据。方法20例（40侧）健康成人受检者分别行矢状面3D—CEMRV和横轴面SWI检查。3D—CEMRV的原始图像行MIP，SWI原始图像行MinIP及MPR处理后，对上矢状窦旁桥静脉的分布、数目及直径进行观察。3D—CEMRV与SWI测量结果之间行配对t检验。结果根据上矢状窦旁桥静脉的注入处将其分为前注入组和后注入组。3D—CEMRV和SWI两种技术观察到前注入组桥静脉数目分别为（1．9±0．6）和（3．2±0．8）支，直径分别为（3．4±1．1）和（2．1±0．5）mm，两种方法间差异有统计学意义（t值分别为11．23、9．76，P值均〈0．01）。后注入组桥静脉数目分别为（3．5±1．2）和（5．9±1．1）支，直径分别为（3．7±0．9）和（2．9±0．7）mm，两种方法间差异也有统计学意义（t值分别为11．51、8．47，P值均〈0．01）。结论3D—CEMRV和SWI成像技术可显示上矢状窦旁桥静脉，有助于上矢状窦旁区域的神经外科手术入路的设计和术中桥静脉的保护，且SWI技术对上矢状窦旁桥静脉的显示能力优于3D—CEMRV技术。Objective To use the superior sagittal sinus （SSS） as an example to identify anatomical features of the bridging veins（BVs） draining into the SSS in both susceptibility weighted imaging （SWI） and three dimensional contrast enhancement MR venography （3D-CEMRV） images. Methods A total of 20 healthy volunteers （40 sides） were examined in this study. The venograms of each patient was obtained from SWI （40 sides out of 20 volunteers） and 3D-CE MRV （40 sides out of 20 volunteers）. The data were analyzed by t test. Results According to their draining location with respect to the SSS, bridging veins were devided into two groups. Between the anterior group and the posterior group were two segments of the SSS into which few bridging veins drained. Observed by 3D-CE MRV and SWI, the average numbers of the anterior group were 1.9 ± 0. 6 and 3.2 ± 0. 8, respectively, and the average diameters of the anterior group were （3.4 ± 1.1 ） and （2. 1 ± 0. 5 ） ram, respectively. These differences between 3D-CE MRV and SWI images were significant （ t = 11.23,9.76, P 〈 0. 01 ）. Observed by 3D-CE MRV and SWI, the average numbers of the posterior group were 3.5 ± 1. 2 and 5.9 ± 1.1, respectively, and the average diameters of the posterior group were （ 3.7 ± 0. 9 ） and （ 2. 9 ± 0. 7 ） mm, respectively. The differences between the two technique were significant as well （ t = 11.51,8.47, P 〈 0. 01 ）. Conclusion The dural entrance of BVs into the SSS can be identified in both SWI and 3D-CE MRV images. The preoperative venogram by using 3D-CE MRV and SWI is useful to design a individual-tailored surgical approach for the preservation of BVs draining into SSS. SWI outweighs 3D-CE MRV in identifying anatomical features of the dural entrance of BVs into the SSS.

关 键 词：脑静脉 磁共振成像 外科手术 

分 类 号：R445.2[医药卫生—影像医学与核医学]