CT结肠造影的应用现状及前景

Current status and future prospects of the clinical application of computed tomography colonography

CT结肠造影(computed tomography colonography,CTC)为新近发展起来地结直肠病变检查手段,是用多排螺旋CT技术将充气扩张的全结肠薄层扫描后的原始数据经相应的计算机软件处理后获得的一系列重建图像.因其简单、快速、安全、非侵入性等优点,易于被患者接受.随着多层螺旋CT(multi-slicespiral computed tomography,MSCT)的应用和计算机软件的不断改进,CTC的图像质量和分析能力有了明显改善,CTC对1cm以上息肉有很高的敏感性和特异性,且在结直肠癌的准确诊断和正确的术前分期中显示了明显的优势.

Computed tomography colonography （CTC） is a recently developed technique for colonic and rectal diseases. After using the multi-slice spiral CT （MSCT） to rapidly scan the aerated colon and rectum, the original images are post-processed using advanced imaging software to acquire a series of reconstruction images. Possessing the advantages of simpleness, rapidness, safety and noninvasiveness, CTC is more easily accepted by patients. As MSCT technology and computed software are constantly being improved, the image quality and diagnostic reliability of CTC have been enhanced greatly. CTC not only has high sensitivity and specificity for detecting polyps over one centimeter but also shows clear advantage in accurate preoperative diagnosis and staging of colorectal carcinoma.