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Single-shot-double-echo EPI

P Börnert1, D Jensen

  • 1Philips GmbH Forschungslaboratorien, Abteilung Technische Systeme, Hamburg, Germany.

Magnetic Resonance Imaging
|January 1, 1994
PubMed
Summary
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This study introduces a novel single-shot-double-echo Echo Planar Imaging (EPI) technique. It enables simultaneous acquisition of spin-echo and stimulated echo images for advanced MRI applications.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Pulse Sequence Development

Background:

  • Echo Planar Imaging (EPI) is a fast MRI technique.
  • Acquiring multiple image contrasts or diffusion information typically requires multiple scans.

Purpose of the Study:

  • To extend Echo Planar Imaging (EPI) for simultaneous acquisition of spin-echo (SE) and stimulated echo (STE).
  • To explore the applications of this single-shot-double-echo EPI approach.

Main Methods:

  • Developed a modified EPI sequence to acquire both SE and STE signals after a single excitation.
  • Utilized the distinct transverse magnetization states reflected in the two echoes.

Main Results:

  • Demonstrated the feasibility of acquiring two independent EPI images reflecting different magnetization states almost simultaneously.

Related Experiment Videos

  • Showcased potential applications including contrast variation, flow/diffusion imaging, and improved resolution.

    • Conclusions:

    • The single-shot-double-echo EPI technique offers a versatile tool for advanced MRI.
    • This method can overcome limitations of conventional EPI, such as T*2 requirements, and enhance image utility.