title: Noise and artifact comparison for Fourier and polynomial phase correction used with Fourier reconstruction of asymmetric data sets.
abstract: Two processes of phase correction, Fourier phase mapping and second-order polynomial phase fitting, are compared in combination with four different schemes for Fourier reconstruction of asymmetric data, using one-dimensional simulations and two-dimensional human head data. Polynomial phase correction provides systematically less image noise and is much less affected by localized phase differences caused by object edges and motion.
authors.affiliation: Department of Radiology, Metro-Health Medical Center, Cleveland, OH 44109.
authors.forename: J
authors.initials: J
authors.lastname: Hua
authors.forename: G C
authors.initials: GC
authors.lastname: Hurst
mesh_terms: D016477:Artifacts; D005583:Fourier Analysis; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods