Abstract #0135

A novel type of radiofrequency antenna for multi-regional 7T MRI

Aurelien Destruel¹, Ewald Weber¹, Mingyan Li¹, Jin Jin^1,2, Craig Engstrom³, Feng Liu¹, and Stuart Crozier¹

¹School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia, ²Siemens Healthcare Pty Ltd, Brisbane, Australia, ³School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Australia

A novel radiofrequency coil element, named integrated multi-modal antenna with coupled radiating structures (I-MARS), is presented in numerical simulations and experiments for 7T MRI. Simulated comparisons of two variations of the proposed design with fractionated dipoles show I-MARS elements have advantageous robustness to load changes, inter-element isolation and are optimizable for power and SAR efficiency. Imaging of volunteers and phantom in different configurations (unilateral hip, prostate and shoulder imaging) did not require adjustments to tuning and matching, showing excellent stability and high performance for multi-anatomy 7T MRI.

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