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目的:探讨术中B超(IOBUS)在胆总管末端结石诊断中的价值.方法:对127例拟诊为胆总管末端结石的患者,实施微创开腹手术,应用术中B超检查胆总管末端,将术中B超结果与术前B超及MRCP检查结果进行对比分析.结果:术前B超准确率为32.3%(41/127),术中B超诊断准确率为85.5%(109/127),后者明显高于前者,χ2=22.05,p0.05.结论:术中B超在胆总管末端结石诊断中准确率高,安全、无创,价格便宜,操作简便,在基层医院可做为MRCP的替代检查.“,”objective To study the value of intraoperative B-ultrasonography in diagnosing stones at distal common bile duct. Methods select 127 cases in openning minimaly invasive operations ,Compared the result of B-US and MRCP with IOBUS.Results the accuracy rate of. IOBUS(85.5%) were significantly higher than that of B-US(32.3 %). (χ2=22.05, p0.05.Conclusion IOBUS can be used in basic level hospitals, instead of MRCP as a safe, cheap ,and non-invasive check method.