title: Clinical usefulness of 3-dimensional computerized tomographic renal angiography to detect transplant renal artery stenosis.
abstract: OBJECTIVE
  The aim of this study was to evaluate whether 3-dimensional computerized tomographic angiography (3D-CTA) is useful to detect transplant renal artery stenosis (TRAS).
  
  
  METHODS
  Fourteen patients with clinically suspected TRAS underwent color Doppler ultrasonography (CDU) and 3D-CTA before renal angiography. We compared 3D-CTA and CDU for accuracy based on the results of renal angiography. The safety of 3D-CTA was investigated by measuring the estimated glomerular filtration rate (eGFR) before and after the 3D-CTA examination.
  
  
  RESULTS
  The 10 men and 4 women who participated in this study showed a mean eGFR of 75 mL/min/1.73 m(2) (range 60-94). Of these, 9 patients were diagnosed with TRAS. 3D-CTA detected stenoses in all 9 patients, but CDU failed to detect it in 3, including, 2 with end-to-side arterial anastomoses, which may be more challenging to detect compared with end-to-end anastomoses. The stenotic area in 3D-CTA was similar to that detected by renal angiography (70 ± 12 vs 68 ± 11). The eGFR did not differ significantly before versus after the 3D-CTA examination; 72 ± 13 vs 69 ± 14 mL/min/1.73 m(2).
  
  
  CONCLUSIONS
  3D-CTA was an effective safe method to detect renal artery stenosis among transplant recipients with an eGFR >60 mL/min/1.73 m(2).
authors.affiliation: Division of Nephrology, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: I O
authors.initials: IO
authors.lastname: Sun
authors.forename: Y A
authors.initials: YA
authors.lastname: Hong
authors.forename: H G
authors.initials: HG
authors.lastname: Kim
authors.forename: H S
authors.initials: HS
authors.lastname: Park
authors.forename: S R
authors.initials: SR
authors.lastname: Choi
authors.forename: B H
authors.initials: BH
authors.lastname: Chung
authors.forename: H J
authors.initials: HJ
authors.lastname: Chun
authors.forename: B S
authors.initials: BS
authors.lastname: Choi
authors.forename: C W
authors.initials: CW
authors.lastname: Park
authors.forename: Y S
authors.initials: YS
authors.lastname: Kim
authors.forename: C W
authors.initials: CW
authors.lastname: Yang
mesh_terms: D000328:Adult; D000792:Angiography / Q000379:methods*; D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed / Q000379:methods*; D018615:Ultrasonography, Doppler, Color