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- Title
The Features of Regularization Method for Solving the Electrical Impedance Tomography Inverse Problem by Zones Conductivities Method.
- Authors
Sushko, I. O.; Rybin, A. I.
- Abstract
The features of regularization method of ill-conditioned derivatives matrices from transfer resistances (nodal voltages) on surface zones conductivities solving the Electrical Impedance Tomography (EIT) reconstruction problems are considered. Using the proposed method allows significantly (hundreds of times) reduce the derivatives matrices orders in comparison to the classical phantom model using finite element method that noticeably simplifies the images reconstruction. The calculation examples show that for separate inhomogeneity visualization (geometric localization, size and character definition) it is sufficient to use the no iteration regularization by A. Tikhonov. The iteration regularization should be applied in cases when it is necessary to determine the absolute values of inhomogeneity conductivities with some precision; it requires a large number of iterations. The alternative method (for the last one) is the modification method for matrix inversion. The examples of inhomogeneity (in the center and in the edge of phantom) visualization are shown.
- Publication
Naukovi visti NTUU - KPI, 2013, Vol 91, Issue 5, p14
- ISSN
1810-0546
- Publication type
Article