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Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

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Published on: February 19, 2021

A broadside-split-ring resonator-based coil for MRI at 7 T.

Manuel J Freire¹, Marcos A Lopez, Florian Meise

¹Department of Electronics and Electromagnetism, University of Seville, 41012 Seville, Spain. freire@us.es

IEEE Transactions on Medical Imaging

|March 27, 2013

Summary

This summary is machine-generated.

A novel broadside-coupled loop (BCL) coil offers improved radio-frequency field uniformity for 7T MRI. This design, based on the broadside-coupled split ring resonator (BC-SRR), shows promise for enhanced signal-to-noise ratio in whole-body systems.

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Area of Science:

Magnetic Resonance Imaging (MRI)
Radio-Frequency (RF) Engineering
Biomedical Engineering

Background:

Conventional loop coils at 7 Tesla (7T) MRI face challenges with radio-frequency (RF) field uniformity.
Split ring resonators are explored for improved coil performance.

Purpose of the Study:

To introduce and evaluate a novel broadside-coupled loop (BCL) coil design.
To compare the performance of the BCL coil against conventional loop designs at 7T.
To assess the signal-to-noise ratio (SNR) improvements offered by the BCL coil.

Main Methods:

Development of a BCL coil based on the broadside-coupled split ring resonator (BC-SRR).
Numerical simulations to model RF field distribution and SNR.
Experimental validation using a 7T whole-body MRI system.

Main Results:

The BCL coil demonstrates inherent uniform current distribution.
Rotational symmetry of the RF field around the coil axis is achieved.
Comparative analysis indicates potential SNR advantages over conventional coils.

Conclusions:

The BCL coil design presents a viable alternative to conventional loop coils for 7T MRI.
The uniform current and rotational symmetry contribute to improved RF field characteristics.
Further investigation is warranted to fully characterize SNR benefits in clinical applications.