Abstract #4254

A novel radiofrequency (RF) coil using dipole with multi-radiating elements at 7T

Lei Guo¹, Aurelien Destruel¹, Mingyan Li¹, Haiwei Chen¹, Ewald Weber¹, Feng Liu¹, and Stuart Crozier¹

¹School of ITEE, The University of Queensland, Brisbane, Australia

At ultra-high field (UHF) MRI, dipole-based antennas have deeper field penetration but increased specific absorption rate (SAR) levels than loop-type coils. In this work, a novel RF coil is proposed based on layer-configured dipole and multiple radiating elements. The designed RF coil is compared with a conventional dipole antenna in electromagnetic simulations and it is observed that more than 30% SAR reduction can be achieved with improved B₁⁺ efficiency.

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