title: Automated detection of bolus arrival and initiation of data acquisition in fast, three-dimensional, gadolinium-enhanced MR angiography.
abstract: Automatic triggering of magnetic resonance (MR) angiography with detection of a contrast material bolus was evaluated. Signal intensity changes with time were tracked in a prescribed tracking or monitoring volume by a parallel signal processing unit that automatically started data acquisition once user-defined thresholds were exceeded. This technique, referred to as MR Smartprep, was reliable and avoided the inconsistencies of manual timing.
authors.affiliation: Applied Science Laboratory, GE Medical Systems, Bethesda, MD 20892-1061, USA.
authors.forename: T K
authors.initials: TK
authors.lastname: Foo
authors.forename: M
authors.initials: M
authors.lastname: Saranathan
authors.forename: M R
authors.initials: MR
authors.lastname: Prince
authors.forename: T L
authors.initials: TL
authors.lastname: Chenevert
mesh_terms: D000328:Adult; D003287:Contrast Media; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D018810:Magnetic Resonance Angiography / Q000379:methods*; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D012815:Signal Processing, Computer-Assisted
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; C064925:gadodiamide; D005682:Gadolinium; D019786:Gadolinium DTPA