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Abstract #3318

Flexible, twisted-pair coil array with dielectric resonators and transceiver dipole antennas for enhanced sensitivity in MRI at 7T

Daniel Wenz1,2, Jules Vliem3, Mark Widmaier1,2, Lijing Xin1,2, and Irena Zivkovic3
1CIBM Center for Biomedical Imaging, Lausanne, Switzerland, 2Animal Imaging and Technology, EPFL Swiss Federal Institute of Technology, Lausanne, Switzerland, 3Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands

Synopsis

Keywords: RF Arrays & Systems, RF Arrays & Systems

Motivation: Increasing SNR in MRI by designing flexible receive arrays that adapt closely to patient anatomy is needed to improve clinical image quality.

Goal(s): This study aims to develop a flexible, multi-channel twisted-pair (TP) coil array with integrated dielectric resonators (DRAs) and transceiver dipole antennas to enhance SNR at 7T.

Approach: The TP array, combined with DRAs and dipole antennas, was validated via numerical simulations and phantom experiments on a 7T MRI scanner to evaluate B1+ efficiency and SNR.

Results: Integrating DRAs, dipole antennas and TP coils provided more than a 2-fold gain in peripheral SNR and almost a 1.2-fold gain in the center.

Impact: This new approach can substantially boost receive performance of flexible RF coils tailored for various clinical applications.

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