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Transient RF Heating of a Conductive Implant: Coupled Electromagnetic/Thermal Simulation and Experimental Validation

A. Leewood1 D. Gross1 J. Crompton2 S. Yushanov2 O. Simonetti3 Y. Ding3
1 MED Institute Inc., West Lafayette, IN, USA
2 AltaSim Technologies, Columbus, OH, USA
3 Ohio State University, Columbus, OH, USA

Local transient temperatures at specific locations on the vena cava filter (left) immersed in a gelled saline phantom placed at the isocenter of a 3.0T MR system.

The purpose of this work was to establish a reliable radio frequency (RF) heating simulation which directly provides transient temperatures for medical devices with high geometric fidelity. These temporal results of localized temperatures can be used to determine conditions for safety of medical devices in the magnetic resonance (MR) environment. Information from this work will directly benefit the regulatory evaluation process, medical device manufacturers, MR scanner manufacturers, physician practitioners and MR technologists.

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