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Echo-planar imaging with asymmetric gradient modulation and inner-volume excitation

✍ Scribed by David A. Feinberg; Robert Turner; Peter D. Jakab; Markus Von Kienlin

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
419 KB
Volume
13
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

Single‐shot echo‐planar imaging is notoriously vulnerable to image artifacts, arising from the necessity of alternate echo time reversal during image reconstruction and from static field inhomogeneity. A technique for overcoming these problems, which further permits imaging on systems with relatively poor gradient waveforms, when data are collected always with the same gradient polarity, is presented. Subsectional and 3D volume imaging are presented as well as a novel phase‐correction method for Hermitian symmetry in “half‐Fourier” echo‐planar imaging.

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