摘要
目的:探讨乙状结肠扭转(SV)的多层螺旋CT(MSCT)表现,以提高SV术前诊断水平。方法:回顾性分析手术病理或肠镜复位证实的15例乙状结肠扭转MSCT表现,归纳其影像学特征。结果:15例SV的MSCT征象有:15例均显示乙状结肠扩张,4例提示有肠管损害,包括肠壁增厚、肠系膜水肿、系膜间渗出和腹腔积液等;CT定位像显示倒"U"征14例,横断面图像显示"圆腹"征13例,"鸟嘴"征11例,MPR显示"交叉"征10例,"漩涡"征9例;CT增强及CTA显示肠壁强化减弱3例,肠系膜小血管闭塞1例,肠系膜动脉旋转2例。结论:乙状结肠扭转的MSCT表现具有一定特征性,尤其是肠管损害的判断对指导临床治疗有较大价值。
Objective：To discuss the imaging characteristics of sigmoid volvulus（SV）with multi-slice spiral computed tomography （MSCT） and improve the level of preoperative diagnosis in patients of SV.Methods：MSCT examinations were performed in 15 caseswith sigmoid volvulus proved by pathology or colonoscope reposition, and the CT imaging characteristics were analyzed and summarized retrospectively. Results：The MSCT signs of 15 cases of SV includedall 15 cases had sigmoid dilated,4 cases showed intestinal damage （bowel wall thickening,mesenteric edema,mesenterium effusion and ascites etc.）. 14 cases with invertedU-shape were showed on scanogram scanning,13 cases of round belly sign, 11 cases ofbeak sign on cross-section scanning. MPR showed 10 cases of cross sign and 9 cases of whirl sign; Contrast-enhanced CT and CTA showed the enhancement of bowel wall weakened in 3 cases, 1 case ofsmall vessel occlusion of mesentery, 2 cases of mesenteric artery rotation.Conclusion：The MSCT features of SV had some characteristics,especiallyhad a great value in guideline for clinical therapy in the estimate of intestinal damage.
出处
《CT理论与应用研究（中英文）》
2016年第3期377-384,共8页
Computerized Tomography Theory and Applications
