中文摘要：

目的：分析彩色多普勒超声（CDU）联合磁共振胆胰管成像（MRCP）诊断老年胆总管结石的价值并讨论其意义。方法：选择2014年1月~2015年12月拟诊断胆总管结石患者270例,男性116例,女性154例,年龄60~85岁。患者均行CDU和MRCP检查,同时以手术或内镜下逆行胰胆管造影术作为金标准,用统计学方法比较单独用CDU或MRCP,以及CDU联合MRCP对诊断老年胆总管结石的价值,同时计算敏感性、特异性和准确性。结果：老年患者270例经手术或ERCP确诊胆总管结石218例,CDU联合MRCP诊断老年胆总管结石的敏感性、特异性和准确性均较单纯CDU检测或MRCP检测高,差异具有统计学意义（P〈0.05）。结论：CDU联合MRCP检查可提高老年胆总管结石诊断准确率,且简便安全,可在临床推广应用。

英文摘要：

Objective To evaluate the diagnostic value of color Doppler ultrasound （CDU） combined with magnetic resonance cholangiopancreatography （MRCP） in elderly patients with suspected choledocholithiasis, and discuss on its clinical significance. Methods Admitted from Jan. 2014 to Dec. 2015, 270 elderly patients with suspected choledocholithiasis were selected, including 116 male, 154 female, aged 60-85 years old. All patients underwent CDU and MRCP examination, and the value of CDU, MRCP, and CDU combined with MRCP in the diagnosis of elderly patients with common bile duct stones were compared with the gold standard of surgery or endoscopic retrograde choangiopancreatography （ERCP）. The diagnostic accuracy, sensitivity and specificity of choledocholithiasis of CDU or MRCP alone, and CDU combined with MRCP were calculated. Results In 270 elderly patients, 218 patients were diagnosed as common bile duct stones by surgery or ERCP. The sensitivity, specificity and accuracy of CDU combined with MRCP in the diagnosis of common bile duct stones were significantly higher than those of CDU or MRCP, with statistical significance （P〈0.05）. Conclusion The CDU combined with MRCP examination can be used in clinical application because the examination can improve the diagnosis accuracy rate of common bile duct stones in elderly patients, and is simple and safe.