B0 Concomitant Field Compensation for MRI Systems Employing Asymmetric Transverse Gradient Coils

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Title
B0 Concomitant Field Compensation for MRI Systems Employing Asymmetric Transverse Gradient Coils
Author(s)
Paul T. Weavers; Shengzhen Tao; Joshua D. Trzasko; Louis M. Frigo; Yunhong Shu; Matt A. Frick; Seung-Kyun Lee; Thomas K-F Foo; Matt A. Bernstein
Publication Date
2018-03
Journal
MAGNETIC RESONANCE IN MEDICINE, v.79, no.3, pp.1538 - 1544
Publisher
WILEY-BLACKWELL
Abstract
Purpose: Imaging gradients result in the generation of concomitant fields, or Maxwell fields, which are of increasing importance at higher gradient amplitudes. These time‐varying fields cause additional phase accumulation, which must be compensated for to avoid image artifacts. In the case of gradient systems employing symmetric design, the concomitant fields are well described with second‐order spatial variation. Gradient systems employing asymmetric design additionally generate concomitant fields with global (zeroth‐order or B0) and linear (first‐order) spatial dependence. (c) 2017 International Society for Magnetic Resonance in Medicine.
URI
https://pr.ibs.re.kr/handle/8788114/4440
ISSN
0740-3194
Appears in Collections:
Center for Neuroscience Imaging Research (뇌과학 이미징 연구단) > Journal Papers (저널논문)
Files in This Item:
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