CT仿真结肠镜的临床应用价值

APPLICATION OF CT VIRTUAL COLONOSCOPY

目的:研究CT仿真结肠镜(CTVirtual Colonoscopy,CTVC) 的镜下图像表现和临床应用价值。方法:应用螺旋CT机对74 例病人行容积扫描,包括大肠癌46 例,息肉19 例,憩室7 个病灶,溃疡性结肠炎3 例,慢性结肠炎3 例,恶性非霍奇金淋巴瘤1 例,类癌1 例,脂肪瘤1 例,脾恶性非霍奇金淋巴瘤侵犯结肠1 例。除憩室外,均经手术和/ 或常规结肠镜检查活检病理证实。应用Navigator 软件获取CTVC图像。结果:CTVC 能够显示癌肿的大体类型、大于4mm 的癌结节和溃疡、大于3.4m m 的息肉;结合多平面2D 重建图像,表面遮盖显示和透明显示图像、原始横轴面图像,有助于病变定位、定性。结论:CTVC是一种有效的检查方法。

Objective: To study the imaging features and the value of clinical application of CT virtual colonoscopy (CTVC). Methods: Seventy-four patients underwent volume scanning using spiral CT. The diseases included 46 cases of adenocarcinoma, 20 cases of polyp, 7 cases of diverticulum, 3 cases of ulcerative colitis, 3 cases of chronic colitis, 1 case of malignant non-Hodgkin lymphoma, 1 case of cancroid, 1 case of lipoma, 1 case of colon focus invaded by spleen malignant non-Hodgkin lymphoma. CTVC images were obtained by Navigator software in workstation. Results: CTVC could show carcinoma type, the carcinoma nodule and ulcer focus larger than 4.0mm、and the polyps larger than 3.4mm in diameter. By reference to multiplannar 2D reconstructions、Surface Shaded Display (SSD) and Raysum、Initial Axial Image, it was possible to predict the lesion location and feature. Conclusions: CTVC is a non-invasive and useful inspection method, which will develop a new way for the examination of colorectal lesions.