多层螺旋CT胰胆管成像与MRCP对疑诊胆道梗阻性疾病诊断价值的ROC曲线分析

Value of CT cholangiopancreatography and MR cholangiopancreatography in patients suspected with biliary obstruction:analysis with receiver operating characteristic curves

目的应用ROC曲线分析法比较CT胰胆管成像(MSCTCP)与磁共振胰胆管成像(MRCP)对疑诊胆道梗阻性疾病的诊断价值。方法选取30例临床疑诊胆道梗阻且同时具有MSCTCP、MRCP资料的患者,由三位资深医师采用双盲法回顾性分析每一位患者的MSCTCP及MRCP资料,并与最终结果进行对照。使用SPSS11.5进行ROC分析。结果三位阅片医师对MSCTCP检查诊断价值的ROC曲线下的面积AZ值分别为0.957、0.962、0.968;对MRCP检查诊断价值的ROC曲线下的面积AZ值分别为0.930、0.925、0.946。t检验证明两种检查方法的差异具有统计学意义(P=0.023)。结论在临床疑诊胆道梗阻性疾病时,MSCTCP的诊断价值比MRCP更高,可以作为首选的常规检查方法。

Objective To evaluate the diagnostic value of multislice CT cholangiopancreatography （MSCTCP） and MR cholangiopancreatography （MRCP） in patients suspected with biliary obstruction by receiver operating characteristic curves （ROC）. Methods Thirty patients suspected with biliary obstruction were collected. All patients were studied with MSCTCP and MRCP. MSCTCP and MRCP images were reviewed independently by three experienced radiologists with dualblind method. And the acquired results were compared with the final results, ROC analysis was made with the SPSS 11. 5 software. Results Area values under the ROC of MSCTCP for the three radiologists were 0. 957, 0. 962 and 0, 968, respectively. Area values under the ROC curve of MRCP were 0. 930, 0. 925 and 0. 946, respectively, t test showed that the difference between MSCTCP and MRCP was significant （P：0. 023）. Conclusion The diagnostic value of MSCTCP was better than that of MRCP in patients with suspected biliary obstruction. MSCTCP could be the routine choice to diagnose suspected obstructive biliary diseases.