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Two-dimensional multishot echo-planar coronary MR angiography

G S Slavin1, S J Riederer, R L Ehman

  • 1Department of Diagnostic Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA.

Magnetic Resonance in Medicine
|December 5, 1998
PubMed
Summary
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This study introduces a novel 2D multishot EPI technique for faster coronary MRA, improving image quality and reducing artifacts in a single breath-hold. This advanced magnetic resonance angiography method offers reliable visualization of coronary arteries.

Area of Science:

  • Cardiovascular Imaging
  • Magnetic Resonance Imaging
  • Medical Technology

Background:

  • Conventional coronary MRA techniques (2D/3D segmented GRE) suffer from signal loss and motion artifacts due to repetitive excitations within cardiac cycles.
  • These limitations hinder the consistent acquisition of high-quality images of coronary arteries.

Purpose of the Study:

  • To evaluate the feasibility and reliability of a novel 2D multishot echo-planar imaging (EPI) technique for coronary MRA.
  • To assess its capability for acquiring high-quality, multislice images of coronary arteries within a short breath-hold period.

Main Methods:

  • Development and application of a 2D multishot EPI sequence for coronary MRA.
  • Acquisition of multislice images of coronary arteries in 16 healthy volunteers during a 17-heartbeat breath-hold.

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  • Utilized large flip-angle excitations and reduced data acquisition windows.

    • Main Results:

    • The 2D multishot EPI technique successfully acquired high-quality images of coronary arteries.
    • Demonstrated consistent reliability in visualizing individual coronary arteries across all volunteers.
    • The technique effectively minimized motion artifacts and improved signal compared to conventional methods.

    Conclusions:

    • Breath-hold 2D multishot EPI is a feasible and reliable technique for multislice coronary MRA.
    • This method overcomes limitations of conventional GRE techniques, offering improved image quality and reduced acquisition time.
    • Potential for enhanced clinical application in cardiovascular imaging.