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Abstract #3644

Current Density Measurements in the Brain using Magnetic Resonance Electrical Impedance Tomography in Healthy Volunteers

Aditya Kumar Kasinadhuni1, Aprinda Indahlastari2, Kevin Castellano3, Christopher Saar4, Casey Weigel4, Bakir Mousa4, Michael Schär5, Munish Chauhan2, Thomas Harold Mareci6, and Rosalind Jane Sadleir2

1Biomedical Engineering, University of Florida, Gainesville, FL, United States, 2School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States, 3University of Florida, Gainesville, FL, United States, 4Arizona State University, Tempe, AZ, United States, 5Radiology, Johns Hopkins University, Baltimore, MD, United States, 6Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, United States

Characterizing current density distributions in the brain of healthy volunteers can provide important information to guide electrical stimulation therapies. Current-induced magnetic fields, produced as a result of electrical stimulation, can be mapped from phase changes in the MR imaging then current density can be computed using Maxwell’s equations. In this study, we present the first current density distribution induced magnetic field maps in healthy volunteers resulting from electrical stimulation using low frequency (10 Hz) transcranial alternating current simulation (tACS).

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