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Related Experiment Videos

Altered phase-encoding order for reduced sensitivity to motion in three-dimensional MR imaging.

H W Korin1, S J Riederer, A E Bampton

  • 1Magnetic Resonance Laboratory, Mayo Clinic and Foundation, Rochester, MN 55905.

Journal of Magnetic Resonance Imaging : JMRI
|November 1, 1992
PubMed
Summary

This study introduces a new method for reordering phase and slab encoding in 3D imaging. The technique effectively reduces motion artifacts without increasing scan time, improving image quality.

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Magnetic Resonance Imaging

Background:

  • Motion artifacts are a significant challenge in three-dimensional (3D) magnetic resonance imaging (MRI).
  • Existing methods for motion correction can be complex or increase scan times.

Purpose of the Study:

  • To describe and implement a novel method for reordering phase and slab encoding to mitigate motion-induced artifacts in 3D MRI.
  • To evaluate the robustness of this method against various motion types.

Main Methods:

  • The proposed method involves a specific reordering of phase and slab encoding steps during image acquisition.
  • Implementation on a standard MRI scanner with minimal modification.
  • Validation through simulations, phantom studies, and in vivo experiments.

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Main Results:

  • The reordering method demonstrated superior robustness in reducing artifacts caused by fundamental motion types.
  • No significant increase in total imaging time was observed.
  • Experimental results confirmed the effectiveness of the technique.

Conclusions:

  • The described phase and slab encoding reordering is an effective strategy for reducing motion artifacts in 3D MRI.
  • Its straightforward implementation and efficiency make it suitable for clinical use.
  • This method enhances the reliability and quality of 3D MRI scans.