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Abstract #4197

Multi-Physics Co-Simulation of Heating Due to Transcranial Direct Current Stimulation at 3T

Mikhail Kozlov1, Nikolaus Weiskopf2, and Harald Möller3
1Neurophysics, Max-Planck-Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, 2Neurophysics, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, 3Nuclear Magnetic Resonance Unit, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany

We modelled RF-induced power deposition and temperature rise at 3T due to presence of standard tDCS equipment using an high resolution human head and torso model. The influence of gel pad geometry on the power deposition was analysed. Our case study provided strong evidence that (i) the tDCS setup has a relevant impact on temperature rise at skin in proximity of tDCS electrode edges at 3T, (ii) assessing temperature rise due to presence of the tDCS setup using one or a few temperature probes located in gel at arbitrary positions cannot be considered as a reliable procedure.

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