The visualisation of the lower ureter with the image intensifier.
D002137:Calculi / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D007089:Image Enhancement; D014514:Ureteral Calculi / Q000000981:diagnostic imaging; D014515:Ureteral Diseases / Q000000981:diagnostic imaging*; D014567:Urography; D014652:Vascular Diseases / Q000000981:diagnostic imaging; D014680:Veins