title: Respiratory navigated free breathing 3D spoiled gradient-recalled echo sequence for contrast-enhanced examination of the liver: diagnostic utility and comparison with free breathing and breath-hold conventional examinations.
abstract: OBJECTIVE
  The purpose of our study was to evaluate image quality in a 3D spoiled gradient-recalled echo (SPGR) sequence that was modified to incorporate respiratory navigation to limit the deleterious effects of respiratory motion and to compare it with conventional scanning during breath-holding and free breathing.
  
  
  CONCLUSIONS
  Respiratory navigation of 3D SPGR sequences is technically feasible, and image quality is modestly improved over free breathing acquisitions using conventional 3D SPGR sequences. This may represent a promising imaging alternative for patients who cannot hold their breath.
authors: Department of Diagnostic Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA. young.phillip@mayo.edu
authors: Phillip M
authors: PM
authors: Young
authors: Anja C
authors: AC
authors: Brau
authors: Yuji
authors: Y
authors: Iwadate
authors: Shreyas
authors: S
authors: Vasanawala
authors: Bruce L
authors: BL
authors: Daniel
authors: Anobel
authors: A
authors: Tamrazi
authors: Robert J
authors: RJ
authors: Herfkens
mesh_terms: D000328:Adult; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D021621:Imaging, Three-Dimensional; D008107:Liver Diseases / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012119:Respiration; D018709:Statistics, Nonparametric
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA