title: Iliac artery MR angiography: comparison of three-dimensional gadolinium-enhanced and two-dimensional time-of-flight techniques.
abstract: OBJECTIVE
  To determine if a three-dimensional (3D) gadolinium-enhanced technique is useful for improving the accuracy of magnetic resonance (MR) angiography.
  
  
  METHODS
  Prospectively, two-dimensional (2D) time-of-flight (TOF) and 3D gadolinium-enhanced MR angiography was performed in 23 patients. Conventional arteriography, the reference standard, was performed in all but five patients. Images from each examination were interpreted blindly by two observers.
  
  
  RESULTS
  For common and external iliac arteries, interpretations of dynamic 3D gadolinium-enhanced MR angiograms matched those of conventional arteriograms in 12 of 18 patients (67%) for both observers. Interpretations of 2D TOF images matched those of conventional arteriograms in six (33%) and seven (39%) patients for the two observers respectively.
  
  
  CONCLUSIONS
  Preliminary results suggest that iliac artery MR angiography can be improved by complementing standard 2D TOF acquisitions with 3D gadolinium-enhanced acquisitions.
authors.affiliation: Department of Radiology, Indiana University Medical Center, Indianapolis 46202-5253, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Snidow
authors.forename: A M
authors.initials: AM
authors.lastname: Aisen
authors.forename: V J
authors.initials: VJ
authors.lastname: Harris
authors.forename: S O
authors.initials: SO
authors.lastname: Trerotola
authors.forename: M S
authors.initials: MS
authors.lastname: Johnson
authors.forename: A P
authors.initials: AP
authors.lastname: Sawchuk
authors.forename: M C
authors.initials: MC
authors.lastname: Dalsing
mesh_terms: D000792:Angiography; D001157:Arterial Occlusive Diseases / Q000175:diagnosis* / Q000453:epidemiology; D003251:Constriction, Pathologic / Q000175:diagnosis / Q000453:epidemiology; D003287:Contrast Media; D004338:Drug Combinations; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D017543:Iliac Aneurysm / Q000175:diagnosis* / Q000453:epidemiology; D007083:Iliac Artery / Q000000981:diagnostic imaging / Q000473:pathology*; D007091:Image Processing, Computer-Assisted; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008536:Meglumine; D008875:Middle Aged; D015588:Observer Variation; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives*; D012680:Sensitivity and Specificity
chemical_list: D003287:Contrast Media; D004338:Drug Combinations; D009942:Organometallic Compounds; D008536:Meglumine; D004369:Pentetic Acid; D019786:Gadolinium DTPA