男性尿生殖膈的MRI与解剖对照研究  

Control study of anatomy and MRI of male urogenital diaphragm

作　　者：赵博[1] 韩悦[1] 李云生[2] 杨连海[1] 

机构地区：[1]天津医科大学第二医院放射科,300211 [2]天津医科大学解剖学教研室

出　　处：《中华泌尿外科杂志》2012年第8期614-617,共4页Chinese Journal of Urology

摘　　要：目的探讨尿生殖膈MRI影像学的表现特点。方法选择4例健康男性尸体盆腔局部离断标本及15名健康男性志愿者，分别进行MRI检查，对照男性盆腔解剖切片与盆腔MRI扫描图像，在MRI图像中找到正常尿生殖膈结构。结果解剖标本显示尿生殖膈两侧附于耻骨下支和坐骨支，在前缘和后缘两层结构互相融合。断层切片显示尿生殖膈上筋膜及尿生殖膈下筋膜分别位于最上方和最下方，其间可见会阴深横肌。冠状位MRI影像表现为“三明治”样三层结构，并且可以显示其全程，三层结构显示清晰。15名志愿者采取同样方位及参数的MRl序列进行扫描，图像中尿生殖膈同样呈“三明治”样结构。10例行小视野T2WI及脂肪抑制序列扫描，与常规T2WI序列扫描比较，应用小视野T2WI及脂肪抑制序列可以更清晰地显示尿生殖膈的三层结构。结论常规MRI可以显示男性尿生殖膈结构，小视野扫描可以更清晰地显示其结构。Objective To investigate the MRI features of male urogenital diaphragm. Methods A total of 4 pelvic specimens of healthy male cadaver and 15 healthy male volunteers underwent pelvic MRI examination. All MRI scan images were analyzed to approach the urogenital diaphragm structure both in corpse and the MRI images. Results The normal urogenital diaphragm of cadavers connected to ramus in- ferior ossis pubis and ischiadic ramus. There were three layers inside the urogenital diaphragm, including superior fascia of urogenital diaphragm, inferior fascia of urogenital diaphragm and deep transverse muscle of perineum. MRI imaging showed the coronal was the best location to exhibit the urogenital diaphragm, and all of the structure appeared like ＂sandwich＂. In the images of the diaphragm of the volunteers also exhibited like ＂sandwich＂, and the three layers are moderate signal in MRI. Ten volunteers were given the fat-depresstion and high resolution scan of T2WI in small ROI, and the structure could be seen much clearly. Fat-depresstion and high resolution scan of T2W1 in small ROI was the best sequence to exhibit the urogenital diaphragm. Coronal location of the structure appeared like ＂sandwich＂. Conclusion MRI is a good way to show urogenital diaphragm, and high resolution scan of T2WI in small ROI can show the structure much clearer.

关 键 词：男(雄)性 磁共振成像 尸体解剖 尿生殖膈 

分 类 号：R697[医药卫生—泌尿科学]