Abstract #0745

Flexible and compact hybrid metasurfaces for enhanced ultra high field in vivo magnetic resonance imaging

Rita Schmidt¹, Alexey Slobozhanyuk^2,3, Pavel Belov², and Andrew Webb¹

¹Radiology, Leiden University Medical Center, Leiden, Netherlands, ²Nanophotonics and Metamaterials, ITMO University, St. Petersburg, Russian Federation, ³Nonlinear Physics Center, Australian National University, ACT 2601, Australia

In previous research it has been shown that high permittivity material pads can be used for global and local RF shimming, as well as local SNR increase. Another recent approach is using metamaterials. In this study we designed a thin, compact and flexible metasurface which consists of metallic strips attached to 8mm thick pad made from a CaTiO₃ suspension in water. We show applications of the hybrid metasurface in an examination of the human brain at 7T, concentrating to produce a local increase in the SNR in the occipital cortex for imaging as well as for spectroscopy.

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