Analysis of forward solvers for electrical impedance tomography in a mammography geometry

We explain how the problem of improving image reconstruction in electrical impedance mammography can be studied by comparing measured data with predictions from the continuum model, ave-gap model, and complete electrode model. The data is measured by the RPI ACT4 system using 60 electrodes arranged in a mammography geometry. Each model's accuracy can be determined by comparing the computed eigenvalues of its Neumann-to-Dirichlet map with those found from experimentally measured N-to-D maps. It will be explained how the different models can be used to reconstruct images of the electrical conductivity and permittivity inside a region bounded by a pair of electrode arrays in a mammography geometry. Reconstructions from experimental data are presented.