Chemical-shift imaging utilizing the positional shifts along the readout gradient direction

Maria I. Altbach; Theodore P. Trouard; Rik Van De Walle; Rebecca J. Theilmann; Eric Clarkson; Harrison H. Barrett; Arthur F. Gmitro

doi:10.1109/42.963818

Chemical-shift imaging utilizing the positional shifts along the readout gradient direction

Maria I. Altbach, Theodore P. Trouard, Rik Van De Walle, Rebecca J. Theilmann, Eric Clarkson, Harrison H. Barrett, Arthur F. Gmitro

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

6 Scopus citations

Abstract

In this work, we describe a method that uses the linear phase acquired during the readout period due to chemical shift to generate individual magnetic resonance (MR) images of chemically shifted species. The method utilizes sets of Fourier (or κ-space) data acquired with different directions of the readout gradient and a postprocessing algorithm to generate chemical shift images. The methodology is developed for both Cartesian data acquisition and for radial data acquisition. The method is presented here for two chemically shifted species but it can be extended to more species. In this work, we present the theory, show the results in phantoms and in human images, and discuss the artifacts and signal-to-noise ratio of the images obtained with the technique.

Original language	English (US)
Pages (from-to)	1156-1166
Number of pages	11
Journal	IEEE Transactions on Medical Imaging
Volume	20
Issue number	11
DOIs	https://doi.org/10.1109/42.963818
State	Published - Nov 2001

Keywords

2-D fourier MRI
Chemical shift
Lipid and water
Radial MRI

ASJC Scopus subject areas

Software
Radiological and Ultrasound Technology
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/42.963818

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title = "Chemical-shift imaging utilizing the positional shifts along the readout gradient direction",

abstract = "In this work, we describe a method that uses the linear phase acquired during the readout period due to chemical shift to generate individual magnetic resonance (MR) images of chemically shifted species. The method utilizes sets of Fourier (or κ-space) data acquired with different directions of the readout gradient and a postprocessing algorithm to generate chemical shift images. The methodology is developed for both Cartesian data acquisition and for radial data acquisition. The method is presented here for two chemically shifted species but it can be extended to more species. In this work, we present the theory, show the results in phantoms and in human images, and discuss the artifacts and signal-to-noise ratio of the images obtained with the technique.",

keywords = "2-D fourier MRI, Chemical shift, Lipid and water, Radial MRI",

author = "Altbach, {Maria I.} and Trouard, {Theodore P.} and {Van De Walle}, Rik and Theilmann, {Rebecca J.} and Eric Clarkson and Barrett, {Harrison H.} and Gmitro, {Arthur F.}",

note = "Funding Information: Manuscript received September 28, 2000; revised August 12, 2001. This work was supported by the National Institutes of Health (NIH) under Grant HL-03528, HL-48206 and Grant CA-52643 and by a grant from the Flinn Foundation. The work of R. Van de Walle was supported by the Fund for Scientific Research (FWO, Belgium). The Associate Editor responsible for coordinating the review of this paper and recommending its publication was X. Hu. Asterisk indicates corresponding author. *M. I. Altbach is with the Department of Radiology, P.O. Box 245067, University of Arizona, Tucson, AZ 85724-5067 USA (e-mail: [email protected]).",

year = "2001",

month = nov,

doi = "10.1109/42.963818",

language = "English (US)",

volume = "20",

pages = "1156--1166",

journal = "IEEE Transactions on Medical Imaging",

issn = "0278-0062",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "11",

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T1 - Chemical-shift imaging utilizing the positional shifts along the readout gradient direction

AU - Altbach, Maria I.

AU - Trouard, Theodore P.

AU - Van De Walle, Rik

AU - Theilmann, Rebecca J.

AU - Clarkson, Eric

AU - Barrett, Harrison H.

AU - Gmitro, Arthur F.

N1 - Funding Information: Manuscript received September 28, 2000; revised August 12, 2001. This work was supported by the National Institutes of Health (NIH) under Grant HL-03528, HL-48206 and Grant CA-52643 and by a grant from the Flinn Foundation. The work of R. Van de Walle was supported by the Fund for Scientific Research (FWO, Belgium). The Associate Editor responsible for coordinating the review of this paper and recommending its publication was X. Hu. Asterisk indicates corresponding author. *M. I. Altbach is with the Department of Radiology, P.O. Box 245067, University of Arizona, Tucson, AZ 85724-5067 USA (e-mail: [email protected]).

PY - 2001/11

Y1 - 2001/11

N2 - In this work, we describe a method that uses the linear phase acquired during the readout period due to chemical shift to generate individual magnetic resonance (MR) images of chemically shifted species. The method utilizes sets of Fourier (or κ-space) data acquired with different directions of the readout gradient and a postprocessing algorithm to generate chemical shift images. The methodology is developed for both Cartesian data acquisition and for radial data acquisition. The method is presented here for two chemically shifted species but it can be extended to more species. In this work, we present the theory, show the results in phantoms and in human images, and discuss the artifacts and signal-to-noise ratio of the images obtained with the technique.

AB - In this work, we describe a method that uses the linear phase acquired during the readout period due to chemical shift to generate individual magnetic resonance (MR) images of chemically shifted species. The method utilizes sets of Fourier (or κ-space) data acquired with different directions of the readout gradient and a postprocessing algorithm to generate chemical shift images. The methodology is developed for both Cartesian data acquisition and for radial data acquisition. The method is presented here for two chemically shifted species but it can be extended to more species. In this work, we present the theory, show the results in phantoms and in human images, and discuss the artifacts and signal-to-noise ratio of the images obtained with the technique.

KW - 2-D fourier MRI

KW - Chemical shift

KW - Lipid and water

KW - Radial MRI

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Chemical-shift imaging utilizing the positional shifts along the readout gradient direction

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