Abstract #4270

A wearable “RF-EEG Cap” for full head coverage concurrent TMS/EEG/fMRI experiments at 3T: a feasibility study

Lucia Navarro de Lara^1,2, Padmavathi Sundaram ^1,2, Lena Nohava³, Elmar Laistler³, Mohammad Daneshzand^1,2, Lawrence Wald^1,2, Jason Stockmann^1,2, and Aapo Nummenmaa^1,2

¹Martinos Center - MGH, Charlestown, MA, United States, ²Harvard Medical School, Boston, MA, United States, ³High Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria

To enable concurrent non-invasive stimulation (TMS) and whole-head multimodal imaging (EEG-fMRI), we propose to apply flexible RF coil technology to build a first-of-its-kind TMS compatible integrated multimodal imaging array, the “RF-EEG cap”. The proposed system allows unrestricted positioning of the TMS coil across the entire scalp. We built a 2-channel prototype and conducted a feasibility study analyzing the effects of a TMS coil and EEG-electrodes on the imaging quality (SNR/B0 maps), the in-bore EEG data quality and EPI timeseries stability. Our results indicate that the flexible coaxial RF technology is a feasible choice to build the proposed “RF-EEG Cap”.

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