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Abstract #3044

Effect of Model and Voxel Size on the Simulated Gradient Induced Electric Fields

Rebecca Emily Feldman1, William Handler2, Blaine Alexander Chronik2

1Medica Biophysics, University of Western Ontairo, London, Ontario, Canada; 2Physics and Astronomy, University of Western Ontario, London, Ontario, Canada

Peripheral nerve stimulation in MRI is caused if the changing magnetic fields induce an electric field that is above the stimulation threshold. In order to estimate that threshold electric field simulations must be performed. In order to calculate the contribution of the scalar potential, a model has to be used to emulate the effects of charge accumulation as the electric field crosses the boundary between air and tissue. This abstract investigates the effect that the size and resolution of model used for these simulations has on the calculated field.