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Abstract #0048

High-Field Imaging at Low SAR: Tx/Rx Prostate Coil Array Using Radiative Elements for Efficient Antenna-Patient Power Transfer

Alexander Raaijmakers1, Ozlem Ipek1, Dennis Klomp1, Hugo Kroeze1, Bart van de Bank1, Vincent Boer1, Paul Harvey2, Cecilia Possanzini2, Jan Lagendijk1, Nico van den Berg1

1Radiotherapy, UMC Utrecht, Utrecht, Netherlands; 2Philips Healthcare, Best, Netherlands

Abdominal imaging at 7 T is challenging due to reduced RF penetration at 298 MHz. Conventional high-field surface coil arrays with stripline elements deposit high SAR levels and suffer from inhomogeneous B1-field distribution. We present results of a prototype coil array consisting of so-called radiative antennas. These elements emit power to the region of interest more efficiently. Simulations and volunteer measurements show reduced SAR levels and increased image homogeneity.