Abstract #1491

Enhancement of transmit and receive efficiencies with hybridized meta-atom in 7T head coil

Marc Dubois¹, Lisa Leroi², Zo Raolison², Redha Abdeddaim¹, Tryfon Antonakakis³, Julien De Rosny⁴, Alexandre Vignaud², Pierre Sabouroux¹, Elodie Georget², Benoit Larrat², Gérard Tayeb¹, Nicolas Bonod¹, Alexis Amadon², Franck Mauconduit⁵, Cyril Poupon², Denis Le Bihan², and Stefan Enoch¹

¹Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France, ²CEA, DRF, JOLIOT, NeuroSpin, UNIRS, Université Paris-Saclay, Gif sur Yvette, France, ³Multiwave Technologies AG, Geneva, Switzerland, ⁴ESPCI Paris, PSL Research University, CNRS, Institut Langevin, Paris, France, ⁵Siemens Healthineers, Saint Denis, France

We show that hybridized meta-atom can be used to improve transmit and receive operation in a 7T head birdcage coil equipped with a 32-channel receive array. Our results demonstrates the enhancement of both transmit and receive signal with the possibility to fill one of the gap usually observed in the brain temporal lobes. This metamaterial based passive shimming strategy provides a cost effective, long-lasting, and non-toxic solution without any impact on the patient’s comfort during the examination.

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