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An improved quadrature or phased-array coil for MR cardiac imaging
Z A Fayad1, T J Connick, L Axel
1Department of Bioengineering, University of Pennsylvania, Philadelphia 19104-6086, USA.
Magnetic Resonance in Medicine
|August 1, 1995
Summary
A new cardiac imaging coil offers significantly improved signal-to-noise ratio and image quality for heart studies. This advanced coil enhances routine cardiac imaging and specialized scans like myocardial perfusion.
Area of Science:
- Medical Imaging
- Biophysics
- Cardiovascular Technology
Background:
- Conventional magnetic resonance imaging (MRI) coils often face limitations in achieving optimal signal-to-noise ratio (SNR) for detailed cardiac imaging.
- The specific anatomical and physiological demands of cardiac imaging necessitate specialized coil designs.
Purpose of the Study:
- To design and evaluate a novel, tailored receive-only coil for enhanced cardiac MRI.
- To assess the performance of this new coil in terms of signal-to-noise ratio and overall image quality compared to existing coil configurations.
Main Methods:
- Development of a dual-element, overlapping receive-only coil capable of operating as a quadrature surface or phased-array coil.
- Performance evaluation using phantom experiments and direct imaging of the human heart.
- Comparative analysis of SNR and image quality against conventional quadrature spine coils, single-element coils, and body coils.
Main Results:
- The tailored cardiac coil demonstrated a 1.6x higher SNR than a conventional quadrature spine coil.
- It achieved a 1.4x higher SNR compared to a single coil of similar dimensions.
- A 3x higher SNR was observed at the depth of the posterior heart wall versus the body coil.
- Overall improvement in image quality across the entire heart was noted.
Conclusions:
- The designed cardiac coil significantly enhances SNR and image quality for cardiac MRI.
- This improved performance is attributed to its specialized design, offering advantages over conventional coils.
- The coil is expected to advance routine clinical cardiac examinations and specialized imaging techniques such as myocardial perfusion, wall motion, and coronary artery imaging.