腹膜CT的形态学研究:实验犬与人的相应结构对照  

Morphologic study of the peritoneum with CT:a comparative study between human and dog

作　　者：郑晓林[1] 杨钢林[1] 丁荏芬[1] 刘碧华[1] 黄石川[1] 

机构地区：[1]东莞市人民医院放射科,广东523018

出　　处：《放射学实践》2004年第5期319-322,共4页Radiologic Practice

基　　金：广东省医学科研课题 (A1 999598)

摘　　要：目的 :阐述正常腹膜腔及腹膜结构的解剖关系。方法 :4只试验犬中 2只开腹后分别用实心和空心塑料丝线标记于小网膜、肠系膜、大网膜、脾胃韧带及横结肠系膜 ,另 2只犬分别行腹膜腔造影 ,平扫后行增强扫描。 4只犬CT扫描结束后处死 ,开腹观察实体形态、腹膜结构与脏器的关系、腹膜内动静脉走行及分布等。另选受检者 5 2例行CT平扫及增强扫描 ,与犬的腹膜结构对照观察 ,确定人腹膜结构的形态及其间隙 ,并测量正常人不同腹膜结构的CT值以及腹壁皮下脂肪的密度 ,比较同一腹膜结构平扫与增强后CT值。结果 :实验犬与人的腹膜结构及周围腹膜间隙相似。CT横断面图像上可显示腹膜结构的形态、位置和密度 ,但腹膜间隙为潜在的间隙 ,如无积液或对比剂填充则不能显示。人的腹膜结构及其间隙在轴位CT图像上更易辨认。同一腹膜结构平扫与增强后CT值差异无显著性意义 (P >0 .0 1)。结论 :对正常腹膜腔和腹膜结构影像形态的研究为进一步精确定位病变及评估病变侵袭范围奠定了重要基础。Objective:To study the morphology of the normal peritoneal cavity and peritoneal structures with CT. Methods:In four dogs examined, the peritoneal space, ligaments and mesenteries were marked with plastic wire after exposure of the abdomen in 2 dogs.In other two dogs,peritoneography was carried out in 1,and plain and enhanced CT scanning were performed in another one.The anatomic relationship of peritoneal cavity and the structures of peritoneum after scanning was observed subsequently.On the other hand,52 normal people were examined by plain and enhanced CT.A comparative study was made between the peritoneal cavity and peritoneal structure of human and that of dog. CT values of various peritoneal structures and that of the same structures in plain and enhanced scanning were measured. Results:The peritoneal structures of human were similar to that of the dog.Their shape,position and density could be displayed clearly.However,peritoneal space was shown only after peritoneography as it was a potential space.Human peritoneal cavity and structures were well displayed on axial view.The CT values of the same structure in plain and enhanced scans were not statistic different (P>0.01). Conclusion:CT morphologic study of the normal peritoneal cavity and peritoneal structures can provide important basic knowledge for precise demonstration of location and extent of the lesions.

关 键 词：腹膜病变 影像学诊断 解剖结构 离体标本 形态学 

分 类 号：R816.5[医药卫生—放射医学]