title: Renal artery stenosis: diagnostic performance of balanced fast field gradient echo MRA.
abstract: OBJECTIVE
  To compare the diagnostic performance of new B-FFE MR angiography with contrast-enhance MR angiography in diagnosis of renal artery stenosis.
  
  
  METHODS
  One hundred and fourteen patients suspected of having renal artery stenosi underwent MR angiography with 2D B-FFE technique and 3D post contrast enhancement.
  
  
  RESULTS
  Compared with contrast enhanced MR angiography, B-FFE MR angiography correctly depicte, significant stenotic renal arteries (> or = 50% stenosis) in 13 and 12 renal arteries from 21 renal arteries reviewed by first and second radiologists, respectively. The overall sensitivity, specificity, negative an, positive predictive values of B-FFE MR angiography in diagnosis of significant renal artery stenosis (> or =50% stenosis) reviewed by first and second radiologists, were 57.1-61.9%, 91.9-93.6%, 96.1-96 4%, and 81.3 92.3%, respectively.
  
  
  CONCLUSIONS
  B-FFE MR angiography of renal arteries can be promising technique for screening patient. who are suspected of having renovascular disease without requirement of intravenous contrast injection especially the kidney disease patients.
authors.affiliation: Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. pfuang@yahoo.com
authors.forename: Pornpim
authors.initials: P
authors.lastname: Korpraphong
authors.forename: Pitchawadee
authors.initials: P
authors.lastname: Tovanabutra
authors.forename: Kobkun
authors.initials: K
authors.lastname: Muangsomboon
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012078:Renal Artery Obstruction / Q000175:diagnosis*; D012680:Sensitivity and Specificity; D055815:Young Adult