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目的:探讨MRI与螺旋CT在直肠癌术前分期诊断中的临床应用价值。方法:选取2012年3月至2017年3月在我院接受治疗的500例直肠癌患者进行研究,术前均对所有患者进行MRI检查以及螺旋CT检查,比较分析两种检查方式直肠癌术前分期诊断的准确率。结果:病理检查证实500例患者中,T_1分期165例(33.0%),T_2分期160例(32.0%),T_3分期137例(27.4%),T_4分期38例(7.6%);N_0分期238例(47.6%),N_1分期187例(37.4%),N_2分期75例(15.0%)。螺旋CT诊断T1分期115例(23.0%),T_2分期65例(13.0%),T_3分期35例(7.0%),T_4分期34例(6.8%);N_0分期121例(24.2%),N_1分期94例(18.8%),N_2分期14例(2.8%)。MRI诊断正确T_1分期128例(25.6%),T_2分期78例(15.6%),T_3分期101例(20.2%),T_4分期28例(5.6%);N_0分期198例(39.6%),N1分期152例(30.4%),N_2分期36例(7.2%)。结论:实验表明MRI诊断直肠癌N分期以及T1、T2、T3分期的准确率明显高于螺旋CT诊断,在直肠癌分期诊断中具有较高的应用价值。
Objective: To investigate the clinical value of MRI and spiral CT in the preoperative staging of rectal cancer. METHODS: A total of 500 patients with rectal cancer treated in our hospital from March 2012 to March 2017 were enrolled in this study. All patients underwent MRI and spiral CT before operation, and the two methods were compared before and after surgery Staging diagnostic accuracy. Results: T-stage staging was found in 165 cases (33.0%), T-stage staging in 160 cases (32.0%), T_3 staging in 137 cases (27.4%) and T_4 staging in 38 cases (47.6%), N 1 staging 187 cases (37.4%) and N 2 staging 75 cases (15.0%). There were 115 cases (23.0%) of T1 staging, 65 cases (13.0%) of T 2 staging, 35 cases (7.0%) of T 3 staging, 34 cases (6.8%) of T 4 staging, 121 cases (24.2%) of N 0 staging, 94 cases (18.8%), N 2 staging in 14 cases (2.8%). There were 128 cases (25.6%) with T 1 staging, 78 (15.6%) with T 2 staging, 101 cases (20.2%) with T 3 staging, 28 cases (5.6%) with T 4 staging, 198 cases (39.6%) with N 0 staging, There were 152 cases (30.4%) and 36 cases (7.2%) with N 2 staging. Conclusion: The experiment shows that the accuracy of MRI in diagnosing rectal cancer by stages and T1, T2 and T3 staging is higher than that of helical CT, which is of great value in staging diagnosis of rectal cancer.