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目的探讨64排螺旋CT仿真结肠镜(CT virtual colonoscopy,CTVC)及其二维三维重建在结肠占位的CT表现及临床应用。方法回顾分析52例行64排螺旋CT双体位结肠扫描的结肠癌病例,所有患者均进行结肠充气仰卧位及俯卧位增强扫描,其中20例增加了左或右侧位三期扫描,将MSCT扫描原始数据传送至ADW4.4工作站采用CT仿真结肠镜(CTVC)、多平面重建(MPR)、表面遮盖显示(SSD)、透明重建显示(Raysum)4种方法进行结肠重建处理,对病灶的形态、大小、密度、结肠壁受损的程度、范围以及结肠外情况、淋巴结转移情况进行综合分析,做出准确判断。结果结肠、直肠癌52例,全部病例均经过手术及纤维结肠镜检查活检病理证实。结论 MSCT仿真结肠镜可显示结肠占位病变的形态、大小及肠壁、肠周侵犯情况,多体位扫描能使病变肠管扩张充分,更好地显示病灶的细节,提高病变检出的敏感性,为临床选择合理的治疗提供有价值的依据,是诊断结肠占位的一种有效检查方法。
Objective To investigate the CT findings and clinical application of 64-slice CT virtual colonoscopy (CTVC) and its two-dimensional three-dimensional reconstruction in the colon. Methods A total of 52 cases of colon cancer were screened from 64 bi-directional colon biopsy specimens. All patients underwent colonic augmentation supine position and prone position augmentation scanning. Among them, 20 patients had three stages of left or right lateral scans, MSCT scan The original data was sent to the ADW4.4 workstation for colon reconstruction using CT Virtual Colonoscopy (CTVC), Multiplanar Reconstruction (MPR), Surface Masking Display (SSD), and Raysum Reconstruction. The morphology, Size, density, extent and extent of damage to the colon wall, as well as the situation outside the colon, lymph node metastases were analyzed comprehensively to make accurate judgments. Results Colon and rectal cancer in 52 cases, all cases were confirmed by surgery and colonoscopy biopsy. Conclusion MSCT colonoscopy can show the shape, size and invasion of intestinal wall and intestine in colonic space. Multi-position scanning can fully expand the bowel of the lesion and better display the details of the lesion, improve the sensitivity of lesion detection, Provide a valuable basis for the clinical treatment of reasonable treatment, diagnosis of colon occupying an effective inspection method.