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Scan time reduction in snapshot FLASH MRI.

P M Jakob1, A Haase

  • 1Physikalisches Institut, Universität Würzburg, Germany.

Magnetic Resonance in Medicine
|April 1, 1992
PubMed
Summary
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This study introduces a faster snapshot FLASH MRI method by performing slice selection once before imaging. This technique significantly reduces scan times for snapshot FLASH imaging.

Area of Science:

  • Medical Imaging
  • Magnetic Resonance Imaging (MRI)

Background:

  • Conventional snapshot FLASH MRI involves slice selection in every projection, leading to lengthy experimental times.
  • Reducing scan duration is crucial for improving patient comfort and minimizing motion artifacts in MRI.

Purpose of the Study:

  • To accelerate snapshot Fast Low Angle Shot (FLASH) Magnetic Resonance Imaging (MRI) acquisition.
  • To present a novel method for reducing the overall measuring time in snapshot FLASH MRI.

Main Methods:

  • Implementing a single slice-selective procedure prior to the entire imaging sequence.
  • Utilizing selective saturation of the outer imaging volume.
  • Employing a train of rapid, hard, low-angle pulses to interrogate the unaffected slice.

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Main Results:

  • Demonstrated a significant reduction in the measuring times for snapshot FLASH MRI.
  • Successfully minimized the experimental time by eliminating repetitive slice selection per projection.

Conclusions:

  • The proposed method effectively speeds up snapshot FLASH MRI acquisition.
  • This technique offers a viable approach to further reduce scan times in snapshot FLASH MRI, enhancing its clinical applicability.