Operative ultrasonography.
D000818:Animals; D001660:Biliary Tract Diseases / Q000601:surgery; D002908:Chronic Disease; D004700:Endocrine System Diseases / Q000601:surgery; D042882:Gallstones / Q000601:surgery; D006801:Humans; D007669:Kidney Calculi / Q000601:surgery; D009369:Neoplasms / Q000601:surgery; D010190:Pancreatic Neoplasms / Q000601:surgery; D010195:Pancreatitis / Q000601:surgery; D013514:Surgical Procedures, Operative / Q000592:standards*; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography; D014656:Vascular Surgical Procedures / Q000592:standards