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 journalArticlepeer-review

6 Scopus citations


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 languageEnglish (US)
Pages (from-to)1156-1166
Number of pages11
JournalIEEE Transactions on Medical Imaging
Issue number11
StatePublished - Nov 2001


  • 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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