Motional phase artifacts in fourier transform MRI

Abstract

Most magnetic resonance imaging (MRI) techniques are subject to a “motional blurring” arising from the acquisition of data in the presence of a frequency-encoding gradient. The Fourier transform of the signal from a spin moving along a magnetic field gradient obeys an equation analogous to the free space Schrijdinger equation. Computer simulations of the Bloch equations illustrate the implications of this motional blurring in MRI. © 1989 Academic Press, Inc.