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A phased array coil for human cardiac imaging

C D Constantinides1, C R Westgate, W G O'Dell

  • 1Department of Biomedical Engineering, John Hopkins University School of Medicine, Baltimore, MD 21205, USA.

Magnetic Resonance in Medicine
|July 1, 1995
PubMed
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A new cardiac phased array receiver coil improved signal-to-noise ratio (SNR) for heart imaging by 1.1-2.85x. This advancement enhances cardiac MRI spatial resolution and reduces scan times.

Area of Science:

  • Medical Imaging
  • Biophysics
  • Electrical Engineering

Background:

  • Cardiac MRI requires high signal-to-noise ratio (SNR) for detailed imaging.
  • Existing receiver coils have limitations in SNR enhancement for cardiac applications.

Purpose of the Study:

  • To develop and evaluate a prototype cardiac phased array receiver coil for improved SNR in cardiac MRI.
  • To assess the performance of the new coil compared to existing commercial coils.

Main Methods:

  • Construction of a prototype coil with a cylindrical array and a separate planar array, each with two coil loops.
  • Data acquisition using the prototype coil with arrays positioned on the chest and back.
  • Comparison of SNR enhancement against a flexible coil and a four-loop planar phased array coil.

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Main Results:

  • The prototype cardiac phased array receiver coil demonstrated an overall SNR enhancement of 1.1-2.85 across the entire heart.
  • This improvement was observed in comparison to both a commercially available flexible coil and a four-loop planar phased array coil.

Conclusions:

  • The developed cardiac phased array receiver coil significantly improves SNR for cardiac MRI.
  • The enhanced SNR can be utilized to increase spatial resolution or decrease image acquisition time in cardiac imaging.