title: The Performance of Noncontrast Magnetic Resonance Angiography in Detecting Renal Artery Stenosis as Compared With Contrast Enhanced Magnetic Resonance Angiography Using Conventional Angiography as a Reference.
abstract: OBJECTIVE
  The aims of this study were to evaluate the performance of noncontrast magnetic resonance angiography (NC MRA) for detecting renal artery stenosis (RAS) as compared with contrast-enhanced magnetic resonance angiography (CE MRA) and to evaluate the clinical feasibility, technical success rate, and performance of NC MRA for detecting RAS as compared with CE MRA.
  
  
  METHODS
  Thirty-six subjects who underwent NC MRA and/or CE MRA were enrolled. Feasibility, technical success rate, and image quality scores were compared. Diagnostic ability was calculated using conventional angiography as a reference.
  
  
  RESULTS
  Noncontrast MRA had higher feasibility and technical success rates than CE MRA did (100% and 97.2% vs 83.3% and 90%, respectively). Noncontrast MRA yielded significantly better image quality in motion artifact (P = 0.016). The diagnostic ability for detecting RAS is without significant difference between NC MRA and CE MRA.
  
  
  CONCLUSIONS
  Although NC MRA and CE MRA demonstrated comparable ability in diagnosing RAS, NC MRA achieved better technical success rates, feasibility, and image quality in motion artifacts than CE MRA did.
authors.affiliation: From the *Department of Medical Imaging, Chung Shan Medical University Hospital; †School of Medical Imaging and Radiological Sciences, Chung Shan Medical University; ‡Division of Cardiology, Department of Internal Medicine, Chung Shan Medical University Hospital; and §School of Medicine, Chung Shan Medical University, Taichung, Taiwan, R.O.C.
authors.forename: Keng-Wei
authors.initials: KW
authors.lastname: Liang
authors.forename: Jhih-Wei
authors.initials: JW
authors.lastname: Chen
authors.forename: Hsin-Hui
authors.initials: HH
authors.lastname: Huang
authors.forename: Chun-Hung
authors.initials: CH
authors.lastname: Su
authors.forename: Yeu-Sheng
authors.initials: YS
authors.lastname: Tyan
authors.forename: Teng-Fu
authors.initials: TF
authors.lastname: Tsao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000379:methods; D002648:Child; D003287:Contrast Media; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012077:Renal Artery / Q000000981:diagnostic imaging; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D055815:Young Adult
chemical_list: D003287:Contrast Media