Theory and application of static field inhomogeneity effects in gradient-echo imaging

Jürgen R. Reichenbach, Ramesh Venkatesan, Dmitriy A. Yablonskiy, Michael R. Thompson, Song Lai, E. Mark Haacke

Research output: Contribution to journalReview article

232 Scopus citations

Abstract

The influence of local static magnetic field inhomogeneities on gradient-echo imaging is discussed and the underlying theoretical aspects are reviewed. A high-resolution approach is suggested to suppress image distortion and restore signal loss due to spin dephasing. Acquisition of three-dimensional data sets not only overcomes part of the limitations associated with gradient echoes but also makes it possible to extract local information about the strength or direction of background gradients and relative susceptibility changes between different tissues. Applications of the suggested approach in the human brain for anatomical imaging as well as for extraction of physical and physiological parameters are presented and discussed.

Original languageEnglish
Pages (from-to)266-279
Number of pages14
JournalJournal of Magnetic Resonance Imaging
Volume7
Issue number2
DOIs
StatePublished - Mar 1 1997

Keywords

  • Artifact
  • Image processing Brain
  • K space
  • Phase imaging
  • Rapid imaging

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