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Abstract #0636

The MotoNet: An MRI-Compatible EEG Net with Embedded Motion Sensors

Andre van der Kouwe1, Hongbae Jeong1, Zinong Yang2, Donald Straney1, Robert Frost1, Laura Lewis2, and Giorgio Bonmassar1
1Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 2Department of Biomedical Engineering, Boston University, Boston, MA, United States


We introduce a new EEG net, which will allow clinicians to monitor EEG while tracking head motion for correction. Motion during MRI limits patient scans, especially of children and patients with seizures. The MotoNet was built using PTF, embedding EEG/motion sensor pairs on opposite sides in one circuit. MRI safety studies at 3T confirmed maximum heating below 1ºC. EEG/motion measurements were made with a standard commercial EEG system. Using a custom MRI sequence with spatial localization gradients only, we showed that the signal on each channel was highly correlated with motion, allowing for electrode positioning and motion tracking.

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