【摘要】 目的 探讨常规核磁共振(Magnetic resonance imaging,MRI)联合弥散加权成像(Diffusion weighted imaging,DWI)在直肠癌术前T分期的诊断价值。方法 对107例经病理证实为直肠腺癌患者行回顾性分析,分别运用常规MRI序列、常规MRI联合DWI序列对直肠癌进行术前T分期,于检查后1周内行手术治疗并取得病理结果,将影像检查结果与术后病理结果对照,比较两种方法对直肠癌术前T分期诊断的准确性。结果 107例患者中,常规MRI检查诊断直肠癌T分期的准确率为84.11%(90/107),与病理T分期间一致性检验较好(Kappa=0.652,P<0.001);常规MRI+DWI检查诊断直肠癌术前T分期的准确性为90.65%(97/107),与病理学T分期间一致性检验较好(Kappa=0.732,P<0.001)。结论与常规MRI序列相比,常规MRI联合DWI诊断直肠癌T分期准确性更高,可为临床提供较合理的治疗方案。更多还原

【Abstract】 Objective To assess the efficacy of diffusion weighted imaging(DWI) with Magnetic Resonance Imaging to predict the T- staging in rectal cancer.Methods One hundred and seven cases confirmed by pathology of rectal adenocarcinoma patients were retrospectively analyzed.T- staging was determined by MRI and DWI combined with MRI.All the patients were underwent surgery within one week after MRI.We compared the results with the pathological T- staging after surgery,and compared the two methods of the preoperative T- staging rectal cancer diagnosis accuracy.Results The accurate rates for T- staging of rectal cancer using MRI was84.11%(90/107).There was a correlation between the result of preoperative MRI and postoperative pathological T-staging(kappa =0.652,P<0.001);The accurate rates for T- staging of rectal cancer using combined MRI with DWI was 90.65%(97/107).There was a better correlation between the result of MRI with DWI and postoperative pathological T- staging(kappa = 0.732,P < 0.001).Conclusion Compared with the conventional MRI sequences,the accuracy of MRI combined with DWI for diagnosis of T- staging in rectal carcinoma is higher.It can provide a more reasonable treatment.更多还原