膝交叉韧带腱鞘囊肿的MRI表现  

MRI features of ganglion cysts of the cruciate ligaments of the knee

作　　者：李润根 郑少锐 方小东 陈维娟 

机构地区：[1]兵器工业五二一医院放射科,西安710065 [2]宁夏固原市医院放射科,宁夏756000

出　　处：《放射学实践》2013年第8期886-888,共3页Radiologic Practice

摘　　要：目的:探讨膝关节前、后交叉韧带腱鞘囊肿的MRI特征。方法:回顾性分析经关节镜或病理证实的21例交叉韧带腱鞘囊肿的临床及膝关节MRI资料。由4位主治医师以上职称的影像学医生分别进行独立读片并记录病变的部位、形状、大小及信号变化。结果:21例患者中,MRI显示囊肿位于前交叉韧带(ACL)14例(韧带内11例,前缘3例),位于后交叉韧带(PCL)5例(均位于其后缘),2例位于ACL与PCL之间区域。21例囊肿大小9.6～47.3mm,其中呈条片样8例、椭圆形6例,有分隔4例,边缘分叶3例。MRI表现为液体信号特征,TSE T1WI呈低信号或中等低信号,T2WI及STIR呈高信号。结论:MRI能准确判断交叉韧带腱鞘囊肿的位置、大小和形状,有助于关节镜术计划的制定。Objective：To investigate the MRI features of ganglion cysts of the anterior or posterior cruciate ligament （ACL or PCL） of the knee. Methods： A retrospective analysis of MR1 images and clinical data were performed in 21 patients with arthroseopically or pathologically proven eruciate ligament ganglion cysts. Evaluation included lesion location, shape, size and signal intensity. Four attending radiologists independently assessed lesion location, shape, size and signal intensity. Results：of the 21 patients, 14 had ACL ganglion cysts, 5 had PCL ganglion cysts, and 2 had ganglion cysts between the ACL and the PCL. The mean diameter of the ganglia was 25.6 mm （range,9.6-47. 3mm）. The ganglia were strip and patchy （ n= 8）, elliptic （ n=6）, contained internal septa （ n = 4 ） and lobulated （n= 3）. Ganglia demonstrate fluid characteristic with low or intermediate signal intensity on T1 weighted images and increased signal intensity on T2-weighted images fast spinecho or STIR. Conclusion： MRI plays an important role of identifing ganglion cysts of the cruciate ligaments and provides important information for preoperative planning before arthroseopie surgery.

关 键 词：腱鞘囊肿 膝 交叉韧带 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R686.1[医药卫生—诊断学]