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Related Experiment Videos

Switched array coils.

H Requardt1, J Offermann, P Erhard

  • 1Siemens AG, UB Med, MR Development Department, Erlangen, West Germany.

Magnetic Resonance in Medicine
|March 1, 1990
PubMed
Summary
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Switched array coils (SACs) offer a user-friendly way to optimize the balance between field of view and signal-to-noise ratio in MRI. This technology enhances image quality by dynamically adjusting coil dimensions for improved imaging performance.

Area of Science:

  • Magnetic Resonance Imaging (MRI) technology
  • Medical imaging hardware
  • Coil design and engineering

Background:

  • Local coil imaging in MRI requires balancing field of view (FOV) and signal-to-noise ratio (SNR).
  • Traditional coil designs offer fixed performance characteristics, limiting adaptability.
  • Switched array coils (SACs) present a novel approach to dynamic coil configuration.

Purpose of the Study:

  • To introduce and explain the functionality of Switched Array Coils (SACs).
  • To demonstrate how SACs enable optimization of the FOV-SNR trade-off in MRI.
  • To highlight the potential of SACs for improving image quality and imaging flexibility.

Main Methods:

  • Utilizing conductor arrays with integrated switches to control current paths.

Related Experiment Videos

  • Implementing system-controlled switching for dynamic adjustment of coil dimensions.
  • Applying the principle to both surface and volume coil designs.

    • Main Results:

    • SACs allow users to select optimal current paths for desired FOV and SNR.
    • Coil dimensions can be altered dynamically within multislice sequences.
    • Improved image quality achieved through smaller coil dimensions for specific slices.
    • Electronic shifting of the sensitive area allows for coverage of larger areas.

    Conclusions:

    • Switched array coils provide a flexible and effective method for enhancing MRI performance.
    • The dynamic adjustability of SACs leads to superior image quality and broader coverage.
    • This technology is applicable to various MRI coil configurations, including surface and volume designs.