title: Corrections for nonuniform sampling distortions in magnetic resonance imagery.
abstract: A technique for estimating and correcting nonuniform sampling distortions in magnetic resonance imagery is presented. The technique consists of first estimating the sampling grid distortion using a parametric model, and then estimating the uniformly sampled data by interpolation on the nonuniform grid. Parameterized models for two particular sampling grid distortion are presented. Maximum likelihood and maximum a posteriori estimators are developed for these distortions. Using computer simulated data, these estimators are shown to perform well.
authors.affiliation: Dept. of Electr. and Comput. Eng., North Carolina State Univ., Raleigh, NC.
authors.forename: H J
authors.initials: HJ
authors.lastname: Trussell
authors.forename: L L
authors.initials: LL
authors.lastname: Arnder
authors.forename: P R
authors.initials: PR
authors.lastname: Moran
authors.forename: R C
authors.initials: RC
authors.lastname: Williams