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Abstract #2701

On the Importance of Solving for Temperature Versus Local SAR When Evaluating RF-Induced Heating in the Magnetic Resonance Environment

Eric David Anttila1, Grant M Baker1, Alan R Leewood1, and David C Gross1
1MED Institute, West Lafayette, IN, United States

Synopsis

Keywords: Safety, SafetyPrevious work has determined that solving for a weighted average local SAR is a relatively easy to way to estimate worst-case RF-induced heating in MRI. The purpose of this study was to determine the importance of solving for temperature using a sequentially coupled electromagnetics and heat transfer model versus local SAR alone when evaluating worst-case RF-induced heating. The results demonstrate that to fully capture RF-induced heating in MRI, temperature rise must be solved for using a sequentially coupled electromagnetic and heat transfer model due to the complex interplay of electric and thermal material properties for implants and the surrounding tissue.

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Keywords