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Susceptibility Artifact Reduction in Fat Suppression
Author(s) -
Mao Jintong,
Gao JiaHong,
Yan Hong,
Ray Ballinger J.
Publication year - 1995
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910330420
Subject(s) - artifact (error) , signal (programming language) , reduction (mathematics) , pulse (music) , chemistry , nuclear magnetic resonance , bandwidth (computing) , physics , optics , computer science , mathematics , artificial intelligence , telecommunications , geometry , detector , programming language
Strong fat signal in regions where a large susceptibility difference exists, for instance at the interface between air and tissue near the maxillary sinus, may not be eliminated by currently available fat suppression techniques without sacrificing the overall quality of the images. In this article, we show that this fat signal, which appears as a susceptibility artifact, can be significantly reduced by using an optimized presaturation pulse with sharp edges and a broad bandwidth, while causing minimal disturbance of the water signal. Several optimized presaturation pulses can be reproduced by the Fourier coefficients provided in the Appendix.