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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