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Abstract #1565

Validation of MR mapping of direct current in a phantom model

Mayank V Jog1, Robert X. Smith2, Kay Jann2, Walter Dunn3, Allan Wu2, and Danny JJ Wang2

1Biomedical Engineering, University of California Los Angeles, Los Angeles, CA, United States, 2Neurology, University of California Los Angeles, Los Angeles, CA, United States, 3Psychiatry, University of California Los Angeles, Los Angeles, CA, United States

Transcranial Direct Current Stimulation(tDCS) is a neuromodulation technique. Reported to improve clinical conditions as well as cognition, tDCS has potential as a treatment modality since it involves only simple scalp electrodes to drive mA currents. To date, only mathematical modeling has been used to visualize tDCS-applied currents.

In previous work, we used MRI field mapping in a novel paradigm to visualize in-vivo, a component of the magnetic field generated by these currents. The present work completes the picture by validating our current visualization technique via comparison between the measured and simulated current-induced fields in a specially constructed phantom.

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