常规MRI与弥散加权成像测量的肿瘤容积对直肠癌TN分期的诊断价值

发布时间：2018-05-20 07:21

  本文选题：直肠肿瘤 + 腺癌　； 参考：《磁共振成像》2017年03期

【摘要】：目的探讨常规MRI与弥散加权成像(DWI)测量的肿瘤容积对直肠癌TN分期的诊断价值。材料与方法对经肠镜确诊的74例直肠癌患者行盆腔3.0 T MRI检g�。分析MRI对直肠癌术前TN分期的准确性,用检验评价MRI术前TN分期与病理分期的一致性。用单因素方差分析评价DWI(b=10000 s/mm~2)测量的肿瘤容积与病理TN分期的相关性。结果MRI诊断直肠癌T、N分期的准确率分别为87.8%(66/74)、66.2%(49/74);病理学和MRI对T分期诊断有较好的一致性(Kappa=0.78,P=0.000)、对N分期诊断一致性较差(Kappa=0.33,F=0.000)。在DWI上测量肿瘤容积≤T2期、T3期、T4期分别为(4145.13±718,00)mm~3、(14939.73±3591.38)mm~3、(22714.76±4251.71)mm~3;N0期、N1期、N2期分别为(14367.15±6425.83)mm~3,(17967.69±5259.88)mm~3、(19464.00±3588.77)DWI测肿瘤容积越大直肠癌T分期越高,差异有统计学意义(F=75.189,P=0.000);肿瘤容积与直肠癌不同N分期间差异有统计学意义(F=3.545,P=0.034)。结论MRI评价直肠癌T分期准确率较高,对N分期也有一定诊断价值。MR肿瘤容积测量对直肠癌TN分期有重要参考价值。
[Abstract]:Objective to evaluate the diagnostic value of tumor volume measured by conventional MRI and diffusion weighted imaging (DWI) in TN staging of rectal cancer. Materials and methods the accuracy of preoperative TN staging in 74 patients with rectal cancer diagnosed by endoscopy with 3. 0 T MRI was evaluated. The consistency between MRI preoperative TN staging and pathological staging was evaluated. Univariate ANOVA was used to evaluate the correlation between tumor volume and pathological TN stage measured by DWI(b=10000 s / mm-2. Results the accuracy of MRI in the diagnosis of Tapa N staging of rectal cancer was 87.8 / 74 / 66.2, respectively, and there was a good agreement between pathology and MRI in the diagnosis of T staging. The diagnostic accuracy of MRI was 0.78 / 0.000 and 0.33 / 0.000 for N staging. 鍦―WI涓婃祴閲忚偪鐦ゅ�圭Н鈮�T2鏈，

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