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Generalized MR interferography.

J Hennig1

  • 1Abteilung Röntgendiagnostik, Klinikum der Albert-Ludwigs-Universität, Freiburg, Federal Republic of Germany.

Magnetic Resonance in Medicine
|December 1, 1990
PubMed
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Generalized MR interferography measures parameters affecting MR signal phase by generating two echoes simultaneously. This technique enables rapid assessment of field inhomogeneity, susceptibility, flow, and motion using interferographic images.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Medical Physics
  • Biophysics

Background:

  • The phase of the magnetic resonance (MR) signal is sensitive to various physical and physiological parameters.
  • Accurate measurement of these phase-affecting parameters is crucial for advanced MR applications.

Purpose of the Study:

  • To introduce and describe Generalized MR Interferography (GMI) as a novel method for MR signal phase measurement.
  • To present experimental possibilities and applications of GMI for rapid parameter determination.

Main Methods:

  • GMI utilizes the interference generated by simultaneously acquiring two MR echoes within a single excitation cycle.
  • Local phase variations are translated into observable displacements within the generated interference stripe pattern.
  • The technique allows for the fast acquisition of interferographic images.

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Main Results:

  • The developed GMI method enables the direct measurement of parameters influencing MR signal phase.
  • Interferographic images provide a visual representation of phase variations.
  • The technique demonstrated fast determination of key parameters.

Conclusions:

  • Generalized MR Interferography is a powerful technique for quantifying MR signal phase-related parameters.
  • GMI facilitates rapid and accurate assessment of field inhomogeneity, susceptibility, flow, and motion.
  • This method holds potential for enhancing various MRI applications.