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Abstract #0578

RF Heating of Multi-channel icEEG Electrodes

Thomas Lottner1, Simon Reiss1, Stefan Rieger2, Johannes Fischer1, Lars Bielak1, Ali Caglar Oezen1, Martin Schüttler2, and Michael Bock1
1Dept.of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, 2CorTec GmbH, Freiburg, Germany

Synopsis

Active implantable medical devices restore body function in patients with neurological or other disorders, increasing their quality of life. The RF-safety assessment of neural implants is complex due to the increasing use of multi-channel systems. In this study, the heating characteristics of intracranial EEG electrodes with increasing number of channels is investigated. this study shows that, for the given configurations, the RF-induced heating decreases, when the number of channels of the device is increased. Hence, increasing the grids of planar electrodes might be used to decrease the RF induced heating.

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Keywords