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| in electrical impedance tomography, the electric current is injected to the body through contact electrodes that usually cover only a part of the body. The electrode positions are chosen so that the current probes mostly the part of the body that we are interested in. However, when the conductivity reconstruction is done in only a part of the body, artificial boundaries of the computational domain may introduce significant and non-local artifacts. In this talk, the truncation boundary conditions are discussed and it is shown that by proper modeling using non-local boundary conditions, the artifacts can be significantly reduced. Results with both simulated and real data are shown. |
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