Optimal phased-array combination for spectroscopy

Mark Bydder; Gavin Hamilton; Takeshi Yokoo; Claude B. Sirlin

doi:10.1016/j.mri.2008.01.050

Optimal phased-array combination for spectroscopy

Mark Bydder, Gavin Hamilton, Takeshi Yokoo, Claude B. Sirlin

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

74 Scopus citations

Abstract

A method for making weighted linear combinations of the spectra acquired by a phased-array coil is described. Unlike most previous combination methods, no special reference points in the data are chosen to represent the coil weights. Instead, all the data points are used, which results in optimal signal-to-noise ratio more reliable estimation. The method uses singular value decomposition to identify the coil weights and extract the principal component of variation in the signal. Subsequent processing of the combined signal (e.g., Fourier transform, baseline correction, phasing) may proceed as per a single coil acquisition.

Original language	English (US)
Pages (from-to)	847-850
Number of pages	4
Journal	Magnetic Resonance Imaging
Volume	26
Issue number	6
DOIs	https://doi.org/10.1016/j.mri.2008.01.050
State	Published - Jul 2008

Keywords

Coils
Phased Array
SVD
Spectroscopy

ASJC Scopus subject areas

Biophysics
Biomedical Engineering
Radiology Nuclear Medicine and imaging

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10.1016/j.mri.2008.01.050

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AU - Hamilton, Gavin

AU - Yokoo, Takeshi

AU - Sirlin, Claude B.

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N2 - A method for making weighted linear combinations of the spectra acquired by a phased-array coil is described. Unlike most previous combination methods, no special reference points in the data are chosen to represent the coil weights. Instead, all the data points are used, which results in optimal signal-to-noise ratio more reliable estimation. The method uses singular value decomposition to identify the coil weights and extract the principal component of variation in the signal. Subsequent processing of the combined signal (e.g., Fourier transform, baseline correction, phasing) may proceed as per a single coil acquisition.

AB - A method for making weighted linear combinations of the spectra acquired by a phased-array coil is described. Unlike most previous combination methods, no special reference points in the data are chosen to represent the coil weights. Instead, all the data points are used, which results in optimal signal-to-noise ratio more reliable estimation. The method uses singular value decomposition to identify the coil weights and extract the principal component of variation in the signal. Subsequent processing of the combined signal (e.g., Fourier transform, baseline correction, phasing) may proceed as per a single coil acquisition.

KW - Coils

KW - Phased Array

KW - SVD

KW - Spectroscopy

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JO - Magnetic Resonance Imaging

JF - Magnetic Resonance Imaging

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Optimal phased-array combination for spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

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