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结肠癌是老年人群发病率和病死率最高的恶性肿瘤之一,大多数结肠癌被认为起源于腺瘤性息肉,结肠筛选检查可发现腺瘤性息肉和早期癌瘤,能有效降低结肠癌的发病率和病死率。螺旋CT结肠成像术(CT Colonography,CTC)因操作简便、无创伤,被认为是一种行之有效的结肠筛选检查方法。特别是,随着多层螺旋CT(multi-slice spiral CT,MSCT)的应用和技术的不断改进,CTC的图像质量和分析能力有了明显的改善,CTC对于发现1cm以上息肉的敏感性和特异性与结肠镜近似,在结肠检查中显示了显著优势。本文重点介绍CTC检查技术、进展和在结肠癌筛选中的价值。
Colon cancer is one of the malignant tumors with the highest morbidity and mortality in the elderly. Most colon cancers are considered to originate from adenomatous polyps. Colon screening can detect adenomatous polyps and early cancers and can effectively reduce colon cancer Incidence and mortality. CT colonography (CT Colonography, CTC) is considered as an effective colonic screening test because of its simplicity and non-invasiveness. In particular, with the continuous improvement of the application and technology of multi-slice spiral CT (MSCT), the image quality and analysis ability of CTC have been significantly improved. The sensitivity and specificity of CTC for detecting polyps of more than 1 cm Sexual and colonoscopic approximations show significant advantages in colon examination. This article highlights CTC screening techniques, progress, and value in colon cancer screening.