目的探讨64排螺旋CT及图像后 处理技术在结直肠癌术前分期诊断中的应 用效果。方法 在2012年1月至2014年12月 间，选择在黑龙江省齐齐哈尔市医学院附 属第二医院确诊的73例结直肠癌患者作为 研究对象，对患者的64排CT图像后处理资 料进行诊断分析，同时与病理对照，在结 直肠癌术前分期中，比较64排CT与病理 诊断结果的一致性。结果 所有患者均获 得了满意的肠道充气，经过图像后处理 (SSD、MPR、Raysum、CTVE)后，诊断结 直肠癌的诊断灵敏度为100%，准确度为 100%。MSCT对结直肠癌进行术前分期与病 理分期的比较k值为0.85，P=0.000，具有 极强的诊断一致性。结论 64排螺旋CT是 一种安全无创，理想的检查结直肠病变的 方法，具有安全系数高，痛苦小等优点， 能够良好显示结直肠的解剖特点以及病变 位置，并且能够显示肠壁浸润、以及局部 淋巴结和远处转移情况，是一种理想的检 查方法。

bjective To discuss the diagnosis results with 64-slice spiral CT and image post-processing techniques before preoperative staging of colorectal cancer. Methods Between January 2012 to December 2014, 73 cases of colorectal cancer patients were selected in the second Qiqihar City, Heilongjiang Province, Medical College Hospital diagnosed as a research object, after the 64-slice CT images of the patient's treatment data for diagnostic analysis, simultaneously with pathology in preoperative staging of colorectal cancer compared with the 64-slice CT pathology consistent results. Results All patients received a satisfactory intestinal inflated, after the processed image (SSD, MPR, Raysum, CTVE), the diagnosis of colorectal cancer diagnostic sensitivity of 100% and an accuracy of 100%. MSCT for preoperative staging of colorectal cancer staging comparison with k value 0.85, P = 0.000, with a strong diagnostic consistency. Conclusion 64-slice spiral CT is a safe and non-invasive, the ideal way to check for colorectal lesions with high safety factor, pain, etc., can be a good show anatomical features, as well as colorectal lesion location, and can display the intestinal wall invasion, as well as local lymph node and distant metastasis, is an ideal way to check.