Placement of electrohydraulic lithotripsy Placement of electrohydraulic lithotripsy N Rate% Common bile duct 13 37, 1 Oddi 5 14, 3 Left hepatic duct 2 5, 7 Right hepatic duct 10 28, 6 Left and right hepatic duct 4 11, 4 Segmental and subsegmetal duct 1 2, 9 Total 35 100 Comments: Electrohydraulic lithotripsy for stones locating in common bile duct were commnest 13 (37.1%).