目的 旨在探讨螺旋CT三期增强 扫描在结直肠癌诊断及分期中的诊断价 值。方法 选取我院2015年1月-2016年12 月收治的结直肠癌患者58例，收集其临床 资料、影像学资料，并以病理学检查结果 为标准，分析CT三期增强扫描对结肠癌患 者临床分期(T)、淋巴结转移(N)、远处 转移(M)的准确诊断率。结果 CT三期增强 扫描对结肠癌患者T分期中，对T1-2分期诊 断准确率为94.11%(16/17)，T3分期诊断 准确率为85.71%(18/21)，T4分期诊断准 确率为95.00%(19/20)。CT三期增强扫描 对N0分期诊断准确率为93.33%(28/30)， 对N1分期诊断准确率为87.50%(14/16)， 对N2分期诊断准确率为91.66%(11/12)。 CT三期增强扫描对结肠癌患者M分期的诊 断准确率为94.82%(55/58)。与病理学分 期结果相比，CT三期增强扫描对结肠癌 患者T、N、M分期诊断准确率无明显差异 (P>0.05)。结论 螺旋CT三期增强扫描可 对结肠癌激进行准确诊断及分期，为临床 制定治疗方案提供可靠影像学资料。

Objective To explore the diagnostic value of spiral CT three phase enhanced scan in the diagnosis and staging of colorectal cancer. Methods A total of 58 patients with colorectal cancer in our hospital from January 2015-2016 year in December were collected from 58 patients of the data, and the pathological examination results as the standard, analyze the accurate diagnosis rate of CT phase three enhanced scan in clinical staging (T), lymph node metastasis (N) and distant metastasis (M) of patients with colon cancer. Results CT three phase enhanced scan in patients with colon cancer T staging, the accuracy of T1-2 staging was 94.11% (16/17) 3, T staging accuracy rate was 85.71% (18/21), the accuracy of T4 staging was 95% (19/20).The diagnostic accuracy of CT three phase enhanced scan for N0 staging was 93.33% (28/30), the accuracy rate of N1 staging was 87.50% (14/16), and the accuracy rate of N2 staging was 91.66% (11/12). The accuracy of CT three phase enhanced scan in diagnosing M staging of colon cancer was 94.82% (55/58). Compared with pathological staging results, there was no significant difference in the diagnostic accuracy of T, N and M staging in patients with colon cancer by CT three phase enhancement scanning (P>0.05). Conclusion spiral CT three phase enhanced scan can accurately diagnose and staging colon cancer, and provide reliable imaging data for clinical treatment.