常规 MRI 联合弥散加权成像对直肠癌 T 分期诊断价值  

Diffusion weighted imaging combined with magnetic resonance imaging to diagnose the T-staging of rec-tal cancer

作　　者：王琪璠 张修石[1] 于友涛[2] 张红霞[1] 于秋杰[1] 

机构地区：[1]哈尔滨医科大学附属肿瘤医院影像中心,哈尔滨150081 [2]解放军总医院第一附属医院介入科

出　　处：《实用肿瘤学杂志》2015年第5期400-403,共4页Practical Oncology Journal

基　　金：哈尔滨科技创新人才研究专项资金项目（2010RFXQS027）

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.Objective To assess the efficacy of diffusion weighted imaging（ DWI） with Magnetic Reso-nance 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-stag-ing rectal cancer diagnosis accuracy.Results The accurate rates for T-staging of rectal cancer using MRI was 84.11%（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 postop-erative 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.

关 键 词：直肠癌 核磁共振 弥散加权成像 T分期 

分 类 号：R445.2[医药卫生—影像医学与核医学]