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Interactive design of motion-compensated gradient waveforms with a personal computer spreadsheet program.

R E Wendt1

  • 1Department of Radiology, Baylor College of Medicine, Houston, TX 77030.

Journal of Magnetic Resonance Imaging : JMRI
|January 1, 1991
PubMed
Summary
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A spreadsheet program efficiently calculated gradient pulse amplitudes for motion-compensated magnetic resonance imaging waveforms. These designs proved effective on clinical scanners with minimal adjustments.

Area of Science:

  • Magnetic Resonance Imaging
  • Biomedical Engineering
  • Signal Processing

Background:

  • Gradient waveforms are crucial for magnetic resonance imaging (MRI) pulse sequences.
  • Motion compensation techniques are essential for reducing artifacts in MRI.
  • Accurate computation of gradient pulse amplitudes is vital for waveform design.

Purpose of the Study:

  • To develop a method for computing gradient pulse amplitudes for motion-compensated waveforms.
  • To design velocity-compensated gradient-echo, frequency-encoding gradients, and section-select waveforms.
  • To assess the practical implementation of these waveform designs on clinical MRI systems.

Main Methods:

  • Utilized a personal computer spreadsheet program for amplitude computation.

Related Experiment Videos

  • Developed designs for velocity-compensated gradient-echo frequency-encoding gradients.
  • Developed designs for velocity-compensated section-select waveforms.

    • Main Results:

    • The spreadsheet program successfully computed gradient pulse amplitudes.
    • The resulting waveform designs required minimal or no modification.
    • Successful implementation was demonstrated on two clinical magnetic resonance imagers.

    Conclusions:

    • A spreadsheet-based approach is a practical and effective method for designing motion-compensated MRI gradient waveforms.
    • The developed waveform designs are robust and readily applicable in clinical settings.
    • This method simplifies the process of optimizing gradient performance in MRI.