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Abstract #4307

Dielectric pads for high-field MRI at 7T: a simulation study

Shubharthi Sengupta1 and Alard Roebroeck1

1Dept. of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands

Dielectric pads have been shown to offer a solution to B1+ inhomogeneity at ultra-high fields. We show the transmit field effects and SAR values generated when using shape-optimised high permittivity dielectric pads for visual cortex imaging. Using a single loop coil and a single dipole, electromagnetic simulations were undertaken to validate the use of these methods using 3 different body voxel models, their B1+ distributions mapped and maximum SAR values recorded and compared.

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