目的 探讨常规多层螺旋CT多 期增强扫描对结直肠癌T分期的应用价 值。方法 收集经手术后病理证实的结 直肠癌患者56例(58个病灶)，术前均行 常规CT多期动态增强扫描，所有病例经 双盲法读片，并对病灶进行T分期(依据 WHO 2010年TNM分期系统)，CT的分期结 果以术后病理结果来验证，以χ2 检验及 Kappa检验来分析CT多期增强扫描评价 结直肠癌T分期的价值。结果 与术后病 理对照，CT对结直肠癌的T分期的准确 率为82.8%，Kappa值为0.687，(χ2 值 =6.800，P=0.147，α=0.05)。结论 常 规CT多期增强扫描简便易行，其评价结 直肠癌T分期与病理具有较好的一致性。

Objective To investigate the value of conventional multi-detector spiral CT with multi-phase enhancement scan in T staging of primary colorectal cancer (CRC). Methods 56 Patients (58 lesions) with CRC, which were confirmed by postoperative pathology, were selected as research subjects. Before surgical operation, all patients were underwent conventional CT multi-phase dynamic enhanced scan. All cases were read by double blind method, and simultaneously each lesions was staged by CT image features (according to the WHO staging TNM 2010 system). The result of CT in T staging were compared with postoperative pathological results. Results Compared with the postoperative pathology, the accuracy rate of CT in T staging of colorectal cancer was 82.8%, and the Kappa value was 0.687 (χ２=6.800, P=0.147, α=0.05). Conclusion Conventional CT multi-phase enhancement scan is a simple and feasible method in the evaluation of T staging of colorectal cancer, and it has a good consistency with pathology.