X线钡剂造影和纤维结肠镜是诊断结直肠肿瘤最常用的检查手段,但是其只能显示肠道腔内和黏膜表面形态的变化,不能直观显示肠壁和腔外的改变,同时辐射剂量大、受操作者技术水平影响大,应用价值和范围受到一定限制。近年来,多层螺旋CT成为结直肠肿瘤定位和术前分期实用和可靠的方法。我们收集我院拟诊为结直肠肿瘤的60例患者 X-ray barium and colonoscopy are the most commonly used diagnostic tools for the diagnosis of colorectal cancer, but they can only show the changes of intestinal lumen and mucosal surface morphology, and can not directly show the changes of intestinal wall and extraluminal, radiation dose Large, affected by the technical level of the operator, the application value and scope of a certain limit. In recent years, multi-slice spiral CT has become a practical and reliable method for colorectal tumor location and preoperative staging. We collected 60 patients who were diagnosed with colorectal cancer in our hospital