Abstract #4876
RF Heating of Gold Cup and Conductive Plastic Electrodes during Simultaneous MRI and EEG
Mukund Balasubramanian 1 , William M. Wells 2 , John R. Ives 3 , Patrick Britz 4 , Tobias Loddenkemper 5 , Padmavathi Sundaram 1 , Robert V. Mulkern 1 , and Darren B. Orbach 1
1
Department of Radiology, Boston Children's
Hospital, Boston, Massachusetts, United States,
2
Department
of Radiology, Brigham and Women's Hospital, Boston,
Massachusetts, United States,
3
Ives
EEG Solutions, Inc., Newburyport, Massachusetts, United
States,
4
Brain
Products GmbH, Gilching, Germany,
5
Department
of Neurology, Boston Children's Hospital, Boston,
Massachusetts, United States
The EEG electrodes used in clinical settings are
typically removed prior to MRI scanning at 3T due to RF
heating concerns. Since it would be advantageous to
leave these electrodes on during routine clinical scans
and to record from them during functional MRI scans, we
measured the temperature changes under two types of
clinical electrodes during a variety of 3T MRI scans,
using watermelons as phantoms. Our results suggest that
these electrodes could be used safely at 3T, as long as
the EEG wire lengths and the SAR of the MRI sequences
are both carefully taken into consideration.
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