PMID: 8946363Dec 1, 1996Paper

Correction for distortion of echo-planar images used to calculate the apparent diffusion coefficient

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
J C Haselgrove, J R Moore

Abstract

An algorithm for correcting the distortions that occur in diffusion-weighted echo-planar images due to the strong diffusion-sensitizing gradients is presented. The dominant distortions may be considered to be only changes of scale coupled with a shear and linear translation in the phase-encoding direction. It is then possible to correct for them by using an algorithm in which each line of the image in the phase-encoding direction is considered in turn, with only one parameter (the scale) to be found by searching.

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Citations

Feb 20, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·F CalamanteA Connelly
Jul 10, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·T ErnstL Chang
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