title: Diuresis renography in equivocal urinary tract obstruction.
abstract: A trial of the value of diuresis renography in equivocal upper urinary tract obstruction is presented. Fifty-two patients were examined by standard renography and renography under a diuretic provocation. The results indicate that the technique is of considerable value in making the vital distinction between dilatation on the excretion urogram due to atonicity and that caused by a genuine obstruction. A quantitative index of the response to diuresis reflecting the degree of impedance to flow is described--the Diuresis Excretion Index. Diuresis renography is recommended in the evaluation of the patient with equivocal urinary tract obstruction.
mesh_terms: D004231:Diuresis / Q000187:drug effects; D005069:Evaluation Studies as Topic; D005665:Furosemide; D006801:Humans; D007465:Iodohippuric Acid; D011859:Radiography; D011866:Radioisotope Renography / Q000379:methods*; D014517:Ureteral Obstruction / Q000175:diagnosis* / Q000000981:diagnostic imaging
chemical_list: D007465:Iodohippuric Acid; D005665:Furosemide