MSCT纹理影像对原发性直肠癌患者淋巴结转移的预测效果

目的探讨多层螺旋电子计算机断层扫描(MSCT)纹理分析对原发性直肠癌患者淋巴结转移的预测效果。方法回顾性分析2015年5月至2019年5月间收治的60例原发性直肠癌患者临床资料,所有病例均经手术病理确诊。患者术前均进行MSCT检查,评估MSCT诊断淋巴结转移的效能,比较有无淋巴结转移者的纹理分析参数分析,绘制ROC曲线评估纹理分析参数的诊断效能。结果MSCT诊断N0、N1、N2分期准确率分别为83.33%、70.00%、83.33%,总准确率为68.33%(41/60);直肠癌无淋巴结转移者短径、峰度、熵均低于直肠癌有淋巴结转移者(P<0.05),有无淋巴结转移者方差、峰度和逆差矩对比差异无统计学意义(P>0.05);短径、峰度和熵值诊断淋巴结转移ROC曲线下面积分别为0.969、0.674和0.863(P<0.05)。结论MSCT纹理影像诊断淋巴结转移效能较高,其中短径、峰度、熵是有较多参考意义的参数。

Predictive Effects of MSCT Texture Imaging on Lymph Node Metastasis in Patients with Primary Rectal Cancer

Objective To explore the predictive effects of multi-slice spiral computed tomography(MSCT)texture analysis on lymph node metastasis in patients with primary rectal cancer.Methods The clinical data of 60 patients with primary rectal cancer admitted between May 2015 and May 2019 were retrospectively analyzed.All cases were confirmed by surgical pathology,and patients underwent MSCT before surgery.The efficacy of MSCT in the diagnosis of lymph node metastasis was evaluated,and the texture analysis parameters were compared among patients with and without lymph node metastasis,and the ROC curve was drawn to evaluate the diagnostic efficacy of texture analysis parameters.Results The accuracy rates of N0,N1 and N2 stages of MSCT were 83.33%,70.00%and 83.33%respectively,and the total accuracy rate was 68.33%(41/60).The short diameter,kurtosis and entropy of rectal cancer patients without lymph node metastasis were lower than those of rectal cancer patients with lymph node metastasis(P<0.05),and there were no significant differences in the variance,kurtosis and inverse difference moment among patients with and without lymph node metastasis(P>0.05).The values of area under the ROC curve of short diameter,kurtosis and entropy in diagnosis of lymph node metastasis were 0.969,0.674 and 0.863 respectively(P<0.05).Conclusion MSCT texture imaging has a high efficacy in the diagnosis of lymph node metastasis.Short diameter,kurtosis and entropy are parameters with more reference significance.