title: Improvement of spiral MRI with the measured k-space trajectory.
abstract: The k-space trajectory of a spiral imaging sequence was measured with a self-encoding technique. The image quality improved dramatically when reconstructed with the measured k-space trajectory. There were substantial artifacts in images reconstructed with the derived k-space trajectory under the assumption of gradient system linearity. The results indicated the non-linearity of the gradient system and the effectiveness of the correction technique.
authors.affiliation: Department of Diagnostic Radiology, Cleveland Clinic Foundation, OH 44195-5129, USA.
authors.forename: X
authors.initials: X
authors.lastname: Ding
authors.forename: J
authors.initials: J
authors.lastname: Tkach
authors.forename: P
authors.initials: P
authors.lastname: Ruggieri
authors.forename: J
authors.initials: J
authors.lastname: Perl
authors.forename: T
authors.initials: T
authors.lastname: Masaryk
mesh_terms: D000703:Analog-Digital Conversion; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D012680:Sensitivity and Specificity