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Related Experiment Videos

Directions in magnetic resonance imaging technology.

D A Ortendahl1, L E Crooks

  • 1Radiologic Imaging Laboratory, University of California, San Francisco 94080.

Medical Progress Through Technology
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

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Recent advancements in magnetic resonance (MR) imaging enhance signal-to-noise ratio, enabling faster scan times and improved image quality. These innovations increase throughput and patient access for MR studies.

Area of Science:

  • Medical Imaging
  • Biophysics

Background:

  • Magnetic Resonance (MR) imaging performance has significantly improved.
  • Enhanced signal-to-noise ratio (SNR) is a key factor in improved MR imaging.
  • Faster imaging allows for increased patient throughput and accessibility.

Purpose of the Study:

  • To review recent advancements in MR imaging techniques.
  • To highlight methods for improving imaging speed and quality.
  • To discuss trade-offs between SNR, acquisition time, and magnetic field strength.

Main Methods:

  • Partial flip angle imaging techniques reduce repetition time (TR) while maintaining contrast and SNR.
  • Acquiring fewer data lines and reconstructing them mathematically can halve acquisition time, with a SNR trade-off.

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  • Echo planar techniques offer further acceleration in imaging speed.

    • Main Results:

    • Improved SNR allows for shorter imaging times without compromising image quality.
    • Techniques like partial flip angle imaging and reduced data acquisition decrease scan duration.
    • Trading SNR for reduced magnetic field strength lowers costs and motion artifacts.

    Conclusions:

    • Advancements in MR imaging, particularly in SNR, have led to significant improvements in speed and quality.
    • Various techniques offer trade-offs between SNR, acquisition time, and field strength, expanding clinical utility.
    • These improvements enhance patient access, reduce costs, and minimize motion artifacts.