Modeling and simulation of open electrical impedance tomography

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part I

Article type: Research Article

Authors: Zhang, Xiao-Ju^a | Chen, Min-You^{a; *} | He, Wei^a | He, Chuan-Hong^a

Affiliations: [a] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400044, P. R. China

Correspondence: [*] Corresponding author. Min-You Chen, Tel.: +86 23 65102647; E-mail: minyouchen@cqu.edu.cn

Abstract: In order to reduce the error in image reconstruction caused by changeable positions of the electrodes in Closed Electrical Impedance Tomography (CEIT), an Open EIT (OEIT) model was proposed using fixed electrode array. The problem is assumed to be a virtual field by defining certain local sensitive area instead of solving the boundary problem in the whole electromagnetic field strictly. Modeling and simulation of OEIT have been conducted to determine reasonable boundary parameters and electrode array structure. The image was reconstructed by iterative Newton-Raphson algorithm with Tikhonov and Variation regularization. The experiment results showed that OEIT achieved good resolution and positioning accuracy, and can be applied to distinguish small difference in conductivity of the biological tissues.

Keywords: Open electrical impedance tomography, modeling, regularization

DOI: 10.3233/JAE-2010-1177

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 713-720, 2010