title: Background suppression using magnetization preparation for contrast-enhanced 3D MR angiography of the pelvic and lower leg arteries.
abstract: OBJECTIVE
  To develop and evaluate non-slab-selective magnetization preparation in contrast-enhanced 3D-MR angiography.
  
  
  METHODS
  An ultrafast spoiled mr angiography sequence (FLASH) with non-selective inversion prepulses for background suppression was implemented on a 1.5 T MR system. In 11 patients gadobenate dimeglumine-enhanced mr-angiography of the pelvic and lower leg arteries was performed using the AngioSURF device. Source data was evaluated for contrast-to-noise-ratio, image quality and the extent of background suppression.
  
  
  RESULTS
  Background suppression and selective vessel contrast was excellent in all vascular levels. The mr protocol was comfortable and easy-to-handle. Abandonment of precontrast-series acquisition simplified the examination procedure markedly.
  
  
  CONCLUSIONS
  Magnetization preparation provides efficient suppression of the background signal in contrast-enhanced 3D mr angiography of the pelvic and lower leg arteries. Since no subtraction technique is needed, moving-bed and whole body MRA-protocols can be simplified significantly.
authors.affiliation: Department of Diagnostic Radiology, University of Freiburg, Germany. jan.winterer@klinikum.uni-freiburg.de
authors.forename: J T
authors.initials: JT
authors.lastname: Winterer
authors.forename: R
authors.initials: R
authors.lastname: Strecker
authors.forename: C
authors.initials: C
authors.lastname: Lohrmann
authors.forename: O
authors.initials: O
authors.lastname: Schaefer
authors.forename: N
authors.initials: N
authors.lastname: Ghanem
authors.forename: T
authors.initials: T
authors.lastname: Bley
authors.forename: E
authors.initials: E
authors.lastname: Kotter
authors.forename: S
authors.initials: S
authors.lastname: Lehnhardt
authors.forename: J
authors.initials: J
authors.lastname: Hennig
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D003287:Contrast Media; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D007866:Leg / Q000098:blood supply*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008536:Meglumine / Q000031:analogs & derivatives*; D008875:Middle Aged; D009942:Organometallic Compounds; D010388:Pelvis / Q000098:blood supply; D016491:Peripheral Vascular Diseases / Q000175:diagnosis*; D013997:Time Factors
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; C064572:gadobenic acid; D008536:Meglumine