乙状结肠梗阻病因的多排螺旋CT诊断

目的探讨64排螺旋CT的多平面重组(MPR)、最大密度投影(MIP)及容积再现(VR)后处理技术在鉴别乙状结肠梗阻病因中的价值。资料与方法收集经手术及病理证实的乙状结肠癌、乙状结肠扭转及乙状结肠粘连所致肠梗阻各1例,分析乙状结肠梗阻的多排螺旋CT表现。结果梗阻点肠壁增厚伴管腔狭窄是乙状结肠癌的特征性表现;梗阻点肠系膜血管漩窝状排列是乙状结肠扭转的特征性表现;乙状结肠牵拉、固定,梗阻点无明显肠壁增厚、无肠系膜血管扭转是乙状结肠粘连的特征性表现。结论 64排螺旋CT的MPR、MIP及VR后处理技术在鉴别诊断不同原因乙状结肠梗阻中有较高实用价值。

Multislice Spiral CT Diagnosis of Etiology in Sigmoid Colon Obstruction

Objective To explore the value of 64 slice spiral CT postprocessing technique with MPR,MIP and VR in differential diagnosis of etiology in sigmoid colon obstruction.Materials and Methods Three cases with sigmoid colon obstruction by carcinoma,volvulus and adhesion respectively were collected,multislice spiral CT findings of sigmoid colon obstruction were analyzed.Results The bowel wall thickening with lumens narrow at the obstruction site was the character of sigmoid carcinoma.The mesentery arteries line up as whirlpool at the obstruction site was the character of sigmoid colon volvulus.The sigmoid colon was drawed and fixed,without obvious thicking wall and whirlpool arteries at the obstruction spot was the character of sigmoid colon adhesion.Conclusion The 64 slice spiral CT postprocessing technique with MPR,MIP and VR have higher practical value in differential diagnosis of etiology in sigmoid colon obstruction.