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Abstract #4270

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

Lucia Navarro de Lara1,2, Padmavathi Sundaram 1,2, Lena Nohava3, Elmar Laistler3, Mohammad Daneshzand1,2, Lawrence Wald1,2, Jason Stockmann1,2, and Aapo Nummenmaa1,2
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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