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Abstract #3290

Simulating Charge at Electrical Property Interfaces

Eric Duggan Gibbs 1,2 and Chunlei Liu 2,3

1 Biomedical Engineering, Duke University, Durham, NC, United States, 2 Duke University Medical Center, Brain Imaging and Analysis Center, Durham, NC, United States, 3 Department of Radiology, Duke University, Durham, NC, United States

Eddy-currents generated by rapidly varying gradients have been proposed as a current source to map electrical properties of tissue non-invasively at low frequencies. It has been suggested that charge accumulated at electrical property interfaces potentially impacts the recorded MR signal. Induced charges also may impact images with conductive prosthetics. This work outlines and demonstrates an algorithm that determines electromagnetic fields in non-homogeneous materials and accounts for charge accumulation due to eddy-currents induced by rapidly varying gradients.

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