Constraining the initial phase in water-fat separation

Mark Bydder; Takeshi Yokoo; Huanzhou Yu; Michael Carl; Scott B. Reeder; Claude B. Sirlin

doi:10.1016/j.mri.2010.08.011

Constraining the initial phase in water-fat separation

Mark Bydder, Takeshi Yokoo, Huanzhou Yu, Michael Carl, Scott B. Reeder, Claude B. Sirlin

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

An algorithm is described for use in chemical shift-based water-fat separation to constrain the phase of both species to be equal at an echo time of zero. This constraint is physically reasonable since the initial phase should be a property of the excitation pulse and receiver coil only. The advantages of phase constrained water-fat separation, namely, improved noise performance and/or reduced data requirements (fewer echos), are demonstrated in simulations and experiments.

Original language	English (US)
Pages (from-to)	216-221
Number of pages	6
Journal	Magnetic Resonance Imaging
Volume	29
Issue number	2
DOIs	https://doi.org/10.1016/j.mri.2010.08.011
State	Published - Feb 2011

Keywords

Chemical shift
Dixon
Phase
Water-fat separation

ASJC Scopus subject areas

Biophysics
Biomedical Engineering
Radiology Nuclear Medicine and imaging

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10.1016/j.mri.2010.08.011

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title = "Constraining the initial phase in water-fat separation",

abstract = "An algorithm is described for use in chemical shift-based water-fat separation to constrain the phase of both species to be equal at an echo time of zero. This constraint is physically reasonable since the initial phase should be a property of the excitation pulse and receiver coil only. The advantages of phase constrained water-fat separation, namely, improved noise performance and/or reduced data requirements (fewer echos), are demonstrated in simulations and experiments.",

keywords = "Chemical shift, Dixon, Phase, Water-fat separation",

author = "Mark Bydder and Takeshi Yokoo and Huanzhou Yu and Michael Carl and Reeder, {Scott B.} and Sirlin, {Claude B.}",

note = "Funding Information: The authors thank Angel Pineda, Ph.D. (Department of Mathematics, California State University, Fullerton, CA) for helpful discussions. Funding was provided by GE Healthcare and through NIH grants (R01-DK075128, R01-DK083380-01, RC1-EB010384-01). ",

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AU - Bydder, Mark

AU - Yokoo, Takeshi

AU - Yu, Huanzhou

AU - Carl, Michael

AU - Reeder, Scott B.

AU - Sirlin, Claude B.

N1 - Funding Information: The authors thank Angel Pineda, Ph.D. (Department of Mathematics, California State University, Fullerton, CA) for helpful discussions. Funding was provided by GE Healthcare and through NIH grants (R01-DK075128, R01-DK083380-01, RC1-EB010384-01).

PY - 2011/2

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N2 - An algorithm is described for use in chemical shift-based water-fat separation to constrain the phase of both species to be equal at an echo time of zero. This constraint is physically reasonable since the initial phase should be a property of the excitation pulse and receiver coil only. The advantages of phase constrained water-fat separation, namely, improved noise performance and/or reduced data requirements (fewer echos), are demonstrated in simulations and experiments.

AB - An algorithm is described for use in chemical shift-based water-fat separation to constrain the phase of both species to be equal at an echo time of zero. This constraint is physically reasonable since the initial phase should be a property of the excitation pulse and receiver coil only. The advantages of phase constrained water-fat separation, namely, improved noise performance and/or reduced data requirements (fewer echos), are demonstrated in simulations and experiments.

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KW - Phase

KW - Water-fat separation

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Constraining the initial phase in water-fat separation

Abstract

Keywords

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