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Abstract #2725

Whole Brain Coverage Multi-Target Framework for Benchmarking RF Arrays Tailored for Thermal Magnetic Resonance of Glioblastoma Multiforme

Faezeh Rahimi1,2, Jason M. Millward1,3, Rolf Schuhmann2, and Thoralf Niendorf1,3,4
1Berlin Ultrahigh Field Facility (B.U.F.F.), Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany, 2FG Theoretische Elektrotechnik, Technische Universität Berlin, Berlin, Germany, 3a joint cooperation between the Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Berlin, Germany, 4MRI.TOOLS GmbH, Berlin, Germany

Synopsis

Keywords: Interventional Devices, Simulations, Brain Tumor, UHF-MRI, Thermal Therapy, Multi-Target Evaluation

Motivation: Thermal Magnetic Resonance (ThermalMR) adds a thermal intervention dimension to MRI by focusing E-fields in the target region (TR). Today’s assessment of RF applicators uses TRs covering a few specific but arbitrary locations in the brain. This approach does not represent the full clinical picture.

Goal(s): This work introduces a multi-target evaluation (MTE) framework and expands RF applicator evaluation to whole brain coverage.

Approach: MTE using EMF simulations for a helmet and for an annular RF applicator.

Results: Our MTE approach provides a technical foundation for the development and objective evaluation of RF applicators tailored for ThermalMR.

Impact: MTE provides a technical foundation for objective RF applicator evaluation using whole brain coverage instead of a few specific but arbitrary target locations. Our framework presents a springboard for RF applicator design and for ThermalMR-based therapy of glioblastoma multiforme.

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