title: Diagnostic value of diuretic-enhanced excretory MR urography in patients with obstructive uropathy.
abstract: OBJECTIVE
  Ultrasonography and conventional intravenous urography are most common methods in diagnosis of obstructive uropathies. The disadvantage of ultrasonography is inability of visualizing middle and lower one thirds of ureter, while intravenous urography is using radiation, also functionally extra loading effect on kidneys. In this study, the diagnostic value of MR urography on obstructive uropathy were investigated.
  
  
  METHODS
  Forty five patients who were suffered from obstructive uropathy examined by ultrasonography, intravenous urography and diuretic-enhanced excretory MR urography by using MR-contrast-agent.
  
  
  RESULTS
  MR urography established accuracy rate of 92.8% for stone diseases which formed the largest group in this study, however, in other causes of obstructive uropathy, MR urography provide 100% correct diagnosis.
  
  
  CONCLUSIONS
  MR urography provide high quality images for diagnosing and determining causes of urinary obstruction defining position and severity of dilatations as well as showing localization of the pathology. We think that MR urography should be a primary investigation in patients with obstructive uropathy who have contrast agent and X-ray contrindication.
authors.affiliation: Department of Radiology, Meram Medical Faculty, Selcuk University, Konya 42080, Turkey. radaydin@hotmail.com
authors.forename: Aydin
authors.initials: A
authors.lastname: Karabacakoglu
authors.forename: Serdar
authors.initials: S
authors.lastname: Karakose
authors.forename: Ozlem
authors.initials: O
authors.lastname: Ince
authors.forename: Osman Ege
authors.initials: OE
authors.lastname: Cobankara
authors.forename: Giray
authors.initials: G
authors.lastname: Karalezli
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003287:Contrast Media; D004108:Dilatation, Pathologic / Q000175:diagnosis; D004232:Diuretics / Q000008:administration & dosage*; D005260:Female; D005665:Furosemide / Q000008:administration & dosage; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007668:Kidney / Q000002:abnormalities; D007669:Kidney Calculi / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography; D014514:Ureteral Calculi / Q000175:diagnosis; D014515:Ureteral Diseases / Q000175:diagnosis; D014517:Ureteral Obstruction / Q000151:congenital; D014554:Urination; D014567:Urography; D014570:Urologic Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging
chemical_list: D003287:Contrast Media; D004232:Diuretics; D005665:Furosemide