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A 16-element phased-array head coil

J R Porter1, S M Wright, A Reykowski

  • 1Department of Electrical Engineering, Texas A&M University, College Station, USA.

Magnetic Resonance in Medicine
|August 14, 1998
PubMed
Summary
This summary is machine-generated.

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A new 16-channel brain imaging array coil significantly boosts signal-to-noise ratio (SNR) near the surface compared to standard coils. This advanced coil design maintains central SNR, offering improved detail for brain scans.

Area of Science:

  • Medical Imaging
  • Electrical Engineering
  • Biophysics

Background:

  • Volume-array coils enhance signal-to-noise ratio (SNR) compared to standard coils.
  • Increasing array elements improves SNR but also complexity.
  • A 16-channel receive-only array was developed for brain imaging.

Purpose of the Study:

  • To demonstrate and evaluate a 16-channel receive-only brain imaging array.
  • To compare its performance against a standard circularly polarized (CP) head coil.
  • To assess the SNR improvements offered by the array design.

Main Methods:

  • Constructed a 16-channel array from a 2x8 grid of square elements on a cylindrical form.
  • Minimized mutual coupling using overlapping elements and current-reducing matching networks.

Related Experiment Videos

  • Utilized a four-channel receiver system with time-domain multiplexing for simultaneous data acquisition.

    • Main Results:

    • The 16-channel array demonstrated a nearly threefold increase in SNR near its surface.
    • Central SNR was comparable to that of a standard CP head coil.
    • Theoretical and experimental comparisons validated the array's performance.

    Conclusions:

    • The developed 16-channel array coil offers significant SNR advantages for brain imaging.
    • It provides superior image quality near the coil surface while maintaining central SNR.
    • This technology represents an advancement in neuroimaging coil design.