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Imaging cardiac activity by the D-bar method for electrical impedance tomography
D Isaacson1, J L Mueller, J C Newell
1Department of Mathematical Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
Abstract:
A practical D-bar algorithm for reconstructing conductivity changes from EIT data taken on electrodes in a 2D geometry is described. The algorithm is based on the global uniqueness proof of Nachman (1996 Ann. Math. 143 71-96) for the 2D inverse conductivity problem. Results are shown for reconstructions from data collected on electrodes placed around the circumference of a human chest to reconstruct a 2D cross-section of the torso. The images show changes in conductivity during a cardiac cycle.
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