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Safety evaluation with respect to RF-induced heating of a new setup for Transcranial Electric Stimulation during MRI

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Göksu,  C
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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https://www.ismrm.org/21/program-files/D-165.htm
(Abstract)

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Citation

Gregersen, F., Göksu, C., Schaefers, G., Xue, R., Thielscher, A., & Hanson, L. (2021). Safety evaluation with respect to RF-induced heating of a new setup for Transcranial Electric Stimulation during MRI. Poster presented at 2021 ISMRM & SMRT Annual Meeting & Exhibition (ISMRM 2021).


Cite as: https://hdl.handle.net/21.11116/0000-0008-87BB-D
Abstract
Combining transcranial electrical stimulation (TES) with MRI offers various interesting research opportunities, but also introduces safety concerns. Coupling between the RF field and highly conductive TES leads can lead to skin burns. These safety issues are usually mitigated with the use of safety resistors and controlled lead paths that reduce the power absorbed by the leads. However, these methods introduce practical limitations for combined TES/MRI experiments, such as limited stimulation currents and cable stray fields corrupting MR current density imaging. We overcome these limitations by using low-conductivity silicone-rubber as TES leads. Simulations and temperature measurements are used for safety assessment.