多排螺旋CT结肠成像技术于结肠病变的应用

Colonic lesions:application of multi-slice spiral CT colonography

目的探讨多排螺旋CT结肠成像术(CT colonography,CTC)在结肠病变中的应用价值。方法对86例疑诊结肠病变患者进行CT扫描、结肠镜检查,将CT数据传至工作站后处理,获取CTC图像,将所得CTC结果与结肠镜及手术病理结果进行对比分析。结果 86例患者结肠CTC图像满意71例,基本满意15例。对于肿瘤样病变,CTC检查直径<10mm病变的敏感度86.1%、特异度83.1%,≥10mm的病变敏感度及特异度均为100%;对于非肿瘤性病变,CTC的敏感度及特异度分别为69.2%、72.2%。结论 CTC是一种无创、安全、方便的影像学检查方法,在结肠病变检出的应用中具有一定优势。

Objective To investigate the value of multi-slice spiral CT colonography （CTC） in the diagnosis of colonic lesions. Methods Eighty-six patients with suspected colonic lesions underwent CT scan and colonoscopy. CT data were transmitted to the postprocessing workstation, then CTC images were reached through reconstruction. Results of CTC and colonoscopy were compared with pathology. Results In all cases of CTC images, 71 cases were satisfied with the image quality, and 15 cases were approximately satisfied. For those tumor-like lesions, sensitivity and specificity of CTC detection for lesions with diameter less and more than 10mm were 86.1%, 83.1%, 100%, 100%, respectively. For those non-tumor lesions, sensitivity and specificity of CTC detection were 69.2% and 72. 2%, respectively. Conclusion CTC is a noninvasive, safe and convenient imaging modality with certain advantages in the detection of colonic lesion.