title: Assessment of urinary tract obstruction using a perfusion technique.
abstract: A perfusion technique is described which enables differentiation in a dilated upper urinary tract between one which is obstructed and one which is not. It has been found invaluable in the assessment of patients prior to surgical intervention and has saved many patients from an operation.
mesh_terms: D000328:Adult; D002648:Child; D003287:Contrast Media; D004108:Dilatation, Pathologic / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000175:diagnosis; D008297:Male; D010477:Perfusion / Q000379:methods*; D011312:Pressure; D014517:Ureteral Obstruction / Q000175:diagnosis; D001745:Urinary Bladder Diseases / Q000175:diagnosis; D014567:Urography / Q000379:methods*; D014570:Urologic Diseases / Q000175:diagnosis*
chemical_list: D003287:Contrast Media