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Abstract #0483

FDTD Simulation of Thermo-Acoustic Ultrasound for Detection of RF Tip Heating

Neerav Dixit1, Pascal Stang2, John Pauly1, and Greig Scott1

1Electrical Engineering, Stanford University, Stanford, CA, United States, 2Procyon Engineering, San Jose, CA, United States

Thermo-acoustic ultrasound uses the acoustic waves generated by thermoelastic expansion to detect peaks in local SAR and could be used to assess the risk of RF heating for patients with implanted or interventional devices. We developed simulations to characterize the generation and propagation of thermo-acoustic waves from device lead tips, and we validated the simulations with experimental results. The simulations provide insight into the properties of thermo-acoustic signals and can aid in the development of a thermo-acoustic ultrasound system for the assessment of RF safety.

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