title: Selection of a convolution function for Fourier inversion using gridding [computerised tomography application].
abstract: In the technique known as gridding, the data samples are weighted for sampling density and convolved with a finite kernel, then resampled on a grid preparatory to a fast Fourier transform. The authors compare the artifact introduced into the image for various convolving functions of different sizes, including the Kaiser-Bessel window and the zero-order prolate spheroidal wave function (PSWF). They also show a convolving function that improves upon the PSWF in some circumstances.
authors.affiliation: Magnetic Resonance Syst. Res. Lab., Stanford Univ., CA.
authors.forename: J I
authors.initials: JI
authors.lastname: Jackson
authors.forename: C H
authors.initials: CH
authors.lastname: Meyer
authors.forename: D G
authors.initials: DG
authors.lastname: Nishimura
authors.forename: A
authors.initials: A
authors.lastname: Macovski