多层螺旋CT三维重建技术在机械性肠梗阻诊断中的应用

目的分析多层螺旋CT三维重建诊断肠梗阻的价值。方法应用16层螺旋CT对28例患者进行容积扫描,分别在工作站进行多平面重建(MPR)、CT仿真结肠镜(CTVC)、表面遮盖显示(SSD)、透亮显示(Raysum)等后处理,将其结果与结肠镜和病理结果相对照。结果多层螺旋CT诊断肠梗阻的准确率为100%,病因诊断准确率为96%,包括肠肿瘤18例,肠粘连2例,肠扭转2例,腹外疝3例,胆石3例。结论MPR、CTVC、SSD和Raysum检查机械性肠梗阻各有优缺点,4种后处理技术的结合,更有助于病变的检出与病变的定位、定性。MPR技术应为首选应用的技术。

Application of Multi - slice Spiral CT Three Dimensional Reconstruction in Diagnosis of Mechanical Intestinal Obstruction

Objective To investigate the diagnostic Value of multi-slice spiral CT 3-Dimensional reconstruction in intestinal obstruction.Methods 28 Patients with malignant lesions of colon underwent volume scanning using multislice helical CT.Four types of reconstruction included multiple planner reconstruction(MPR),CT virtual colonoscopy(CTVC),shaded surface display(SSD)and raysum.The results were compared with those of colonoscopy and patholog.Results CT diagnostic accurate rate was 100%,and the accurate rate of the cause was 96% in intestinal obstruction,including primary or secondary neoplasms(18/28),abhesions(2/28),bowel torsion(2/28)and external or internal hernias(3/28) and gallstone ileus(3/28).Conclusion There were advantages and disadvantages in diagnosis of mechanical intestinal obstruction with MPR,CTVC,SSD and Raysum respectively.The combined use of the four post-processing technigues can be more helpful to precise localizing and qualitative diagnosis of lesions.MPR should be the optimal post-processing technigues for the diagnosis of intestinal obstruction