title: A modified application of the Cope introduction set.
mesh_terms: D002404:Catheterization / Q000295:instrumentation*; D004106:Dilatation / Q000295:instrumentation; D004322:Drainage / Q000295:instrumentation*; D006801:Humans; D009339:Needles; D011859:Radiography; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging