Imaging cardiac activity by the D-bar method for electrical impedance tomography.

@article{Isaacson2006ImagingCA,
  title={Imaging cardiac activity by the D-bar method for electrical impedance tomography.},
  author={David Isaacson and Jennifer L. Mueller and Jonathan C. Newell and S. Siltanen},
  journal={Physiological measurement},
  year={2006},
  volume={27 5},
  pages={S43-50}
}
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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