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Abstract #4427

Novel applicator design for MR guided RF hyperthermia in head and neck cancers: heating performance and RF coupling

Margarethus Marius Paulides1, Tomas Drizdal1, Gerard Cornelis Van Rhoon1, and Desmond Teck Beng Yeo2

1Radiation Oncology, Erasmus MC Cancer Institute, Rotterdam, Netherlands, 2GE Global Research, Niskayuna, NY, United States

Clinical studies have established the clinical benefit of adjuvant mild hyperthermia in the head and neck, but further improvements are hampered by an inadequate temperature dosimetry. We designed a novel MR compatible hyperthermia applicator ("MRcollar") based on a previously developed antenna concept. Despite the tradeoffs faced when combining heating and imaging, good power focusing ability, i.e. hyperthermia quality, and MRI compatibility were demonstrated by simulations and a reduced scale experiment.

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