Simulating Charge at Electrical Property Interfaces
Eric Duggan Gibbs 1,2 and Chunlei Liu 2,3
Biomedical Engineering, Duke University,
Durham, NC, United States,
University Medical Center, Brain Imaging and Analysis
Center, Durham, NC, United States,
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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