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Abstract #1405

Lightweight metasurface pads for passive RF shimming in 3T abdominal imaging

Tania del Socorro Vergara Gomez1,2, Marc Dubois1,2,3, Pierre Jomin2, Megdouda Benamara3, Djamel Berrahou3, Elodie Georget3, Tryfon Antonakakis3, David Bendahan1, Frank Kober1, Stefan Enoch2, and Redha Abdeddaim2
1Aix Marseille Univ, CNRS, CRMBM, Marseille, France, 2Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France, 3Multiwave Imaging, Marseille, France

Abdominal imaging at 3T suffers from B1+ inhomogeneities due to radiofrequency (RF) wavelength reduction. High permittivity dielectric pads have been introduced as suitable solution to this problem. Such pads can require up to a few kilograms of ceramic powder usually dispersed in water. This could be detrimental to patient comfort during examination. Here we present a new approach based on thin, lightweight and flexible metasurface pads. The pads are shown to improve transmit and receive efficiency together with SNR in vitro.

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