Calculation of Electromagnetic Field Distribution to Detect Liver Abnormalities using MR-based Electrical Impedance Tomography

Electromagnetic field distribution of biological system can be imaged from magnetic flux density which was induced by externally injected current through the electrodes. Electromagnetic field is affected by injected current and electrical conductivity of tissues, electrode type and position are important factors for determining voltage and current density. Signal intensity of current density is proportional to magnetic flux density which can be measured by MREIT. MREIT has potential to provide high-resolution electromagnetic field distribution inside the liver. Using a three-dimensional FEM model, we estimate current pathway and electrical field distribution to detect liver abnormalities at three different current injection methods.

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