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目的 :探讨直肠癌体素内不相干运动(intravoxel incoherent motion,IVIM)MR成像参数与术后TNM分期的相关性。方法:前瞻性纳入32例直肠癌患者,行术前MR扫描,其中IVIM序列采用12 b值(0~1 200 s/mm2),所有患者均行直肠癌根治术,并进行术后病理分期,分析直肠癌术前IVIM参数(标准ADC、D、f、D*值)在不同T分期、N分期及TNM总分期中的差异及其与分期的相关性。结果:直肠癌术前IVIM各参数标准ADC、D、f、D*值在术后各T分期、N分期及TNM总分期之间无显著性差异,且与分期无显著相关性(P均>0.05)。结论:直肠癌术前IVIM各参数在不同TNM分期之间无显著性差异。
Objective: To investigate the correlation between MR imaging parameters and postoperative TNM staging of intravoxel incoherent motion (IVIM) in rectal cancer. Methods: Thirty-two patients with rectal cancer were enrolled prospectively underwent preoperative MR scan. The IV b values of IVIM were 12 b values (0-1 200 s / mm2). All patients underwent radical resection of rectal cancer. The pathological stage, To analyze the difference of preoperative IVIM parameters (standard ADC, D, f, D * values) in different T stage, N stage and TNM total stage of rectal cancer and its correlation with staging. Results: There was no significant difference in ADC, D, f, D * values of preoperative IVIM parameters in rectal cancer between T stage, N stage and TNM stage, and there was no significant correlation with IV stage (P> 0.05). Conclusion: The parameters of preoperative IVIM in rectal cancer have no significant difference between different TNM staging.