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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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