BACKGROUND AND STUDY AIMS: Diagnostic endoscopic retrograde cholangiography (ERC) is being replaced by endoscopic ultrasonography (EUS) in patients with suspected bile duct stones.

背景和研究目的：内镜超声检查法(EUS)代替诊断性内窥镜逆性胆管造影术(ERC)检查可疑的胆管结石患者。

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Objective to compare the diagnostic accuracy of intraductal ultrasonography (IDUS) and endoscopic retrograde cholangiography (ERC) on extrahepatic bile duct stones.

目的比较十二指肠镜下胆管腔内超声(IDUS)和内镜下逆行胆管造影(ERC)诊断肝外胆管结石的作用。

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Objective To evaluate the abnormal imagine of postoperative T-tube retrograde cholangiography for clinical practive.

目的探讨术后经T形管胆道造影异常影像的临床意义。

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