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Related Experiment Videos

Parallel-plate split-conductor surface coil: analysis and design.

P Gonord1, S Kan, A Leroy-Willig

  • 1Institut d'Electronique Fondamentale, Orsay, France.

Magnetic Resonance in Medicine
|March 1, 1988
PubMed
Summary
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Researchers developed a novel split-conductor resonator for Nuclear Magnetic Resonance (NMR) imaging. This printed-circuit coil offers high performance and simplifies antenna design for spectroscopy applications.

Area of Science:

  • Physics
  • Engineering
  • Biomedical Imaging

Background:

  • Nuclear Magnetic Resonance (NMR) imaging requires specialized surface coils for signal detection.
  • Existing coil designs can be complex to fabricate and may suffer from frequency detuning.

Purpose of the Study:

  • To present a novel split-conductor circular parallel-plate resonator for NMR imaging.
  • To provide a design methodology for researchers to create custom NMR antennas.

Main Methods:

  • The study proposes an equivalent circuit model for the resonator.
  • An equation was derived to relate self-resonance frequency to the split distance.
  • A 101-mm diameter coil operating at 26 MHz for 31P spectroscopy was fabricated and tested.

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Main Results:

  • The split-conductor resonator demonstrates a high loaded Q factor.
  • Negligible frequency detuning was observed during operation.
  • Experimental results showed strong concordance with calculated values.

Conclusions:

  • The split-conductor resonator is a viable and advantageous surface coil for NMR imaging.
  • The derived equations facilitate the design of custom NMR antennas for specific research needs.