title: The impact of navigator timing parameters and navigator spatial resolution on 3D coronary magnetic resonance angiography.
abstract: The impact of navigator spatial resolution and navigator evaluation time on image quality in free-breathing navigator-gated 3D coronary magnetic resonance angiography (MRA), including real-time motion correction, was investigated in a moving phantom. Objective image quality parameters signal-to-noise ratio (SNR) and vessel sharpness were compared. It was found that for improved mage quality a short navigator evaluation time is of crucial importance. Navigator spatial resolution showed minimal influence on image quality.
authors.affiliation: Department of Medicine (Cardiovascular Division), Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA. spuenti@rad.rwth-aachen.de
authors.forename: E
authors.initials: E
authors.lastname: Spuentrup
authors.forename: M
authors.initials: M
authors.lastname: Stuber
authors.forename: R M
authors.initials: RM
authors.lastname: Botnar
authors.forename: W J
authors.initials: WJ
authors.lastname: Manning
mesh_terms: D003199:Computer Systems; D007089:Image Enhancement; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography / Q000295:instrumentation / Q000379:methods*; D008954:Models, Biological; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D013997:Time Factors