16层螺旋CT结肠成像技术的临床应用价值

The value of 16 slices CT colonography in clinic

目的:探讨16层螺旋CT结肠成像(CTcolonography,CTC)技术在结肠疾病检出中的临床应用价值。方法:回顾性分析31例临床可疑结肠疾病患者的CTC检查结果并与纤维结肠镜、病理检查结果进行对照,计算CTC对结肠疾病诊断的敏感度、特异度及准确度。结果:CTC对结肠癌的检出率与纤维结肠镜相同,敏感度、特异度及准确度均达100%、100%、100%。CTC检查对直径≥10 mm,5.0～9.9 mm和<5 mm的息肉诊断的敏感度、特异度及准确度分别为100%、100%、100%,94.1%、100%、96.6%和75%、100%、93.1%。结论:CTC是一种无创伤性的影像学检查方法,对结肠疾病,尤其是结肠肿瘤、息肉诊断的敏感度、特异度及准确度均较高,可作为纤维结肠镜有价值的补充检查手段。

Objective： To evaluate the clinical value of 16 slices CT colonography（CTC） in the diseases of colon. Methods： In 31 consecutive patients, CTC and colonoscopy were performed. CTC findings were compared with those of colonoscopy and histopathology, which were the standard. The sensitivity, specifici- ty and accuracy of CTC for detection of colorectal diseases were calculated. Results： The sensitivity, specificity and accuracy of CTC for detection of colorectal cancer were the same as colonoscopy. The sensitivity, specificity and accuracy of CTC for detection of colorectal polyps of 10mm or larger, 5.0 ~9.9 mm, and smaller than 5mm were 100%, 100%, 100%, 94.1%, 100%, 96.6% and 75%, 100%, 93.1%, respectively. Conclusion： As a non-invasively diagnostic imaging, CTC has superior sensitivity, specificity and accuracy in detection of colorectal diseases, such as colorectal cancer and polyps, and can be used as an alternative to colonoscopy.