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A reconstruction algorithm of electrical impedance tomography with optimal configuration of the driven electrodes

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3 Author(s)
Kyriacou, G.A. ; Dept. of Electr. Eng., Demokritos Univ. of Thrace, Xanthi, Greece ; Koukourlis, Christos S. ; Sahalos, J.N.

A reconstruction algorithm for electrical impedance tomography (EIT) is presented. The least-squares (LS) method is applied and a formulation similar to that of the perturbation method is found. The main difference from perturbation lies with the sensitivity matrix, which here is replaced by the Jacobian matrix, defined in terms of the partial derivatives of every sensing electrode pair voltage difference with respect to every element's conductivity. The mutual position between the active electrodes is chosen to give optimum sensitivity. The results shown that the algorithm presented here has a better convergence and needs fewer iterations than the perturbation method

Published in:

Medical Imaging, IEEE Transactions on  (Volume:12 ,  Issue: 3 )

Date of Publication:

Sep 1993

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