3D electrical impedance tomography represented by reconstructed planes in a semispherical electrode array model

Article type: Research Article

Authors: He, Wei^a | Ran, Peng^{a; *} | Xu, Zheng^a | Li, Bing^a

Affiliations: [a] State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China

Correspondence: [*] Corresponding author: Peng Ran, State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China. Tel.: +86 023 6510 5242; E-mail: p.ran@cqu.edu.cn

Abstract: This paper addresses the augmentation of a conventional plane electrode arrays electrical impedance tomography (EIT) system to form a combined electrode arrays EIT system. This enhances the system performs of providing more accordant information of objects. The system is built up of 65 electrodes, composing of 4 horizontal and 8 axial intercrossing image planes. A phantom experiment has been taken and the measurements been processed by Tikhonov Regularization algorithm and reconstructed by the data obtained from the corresponding model. From comparing the reconstructed volume of anomaly with the target, the results indicate that the described method augments the EIT 3-D rebuilding to a distinguishable level. The qualitative results illustrate the feasibility of this composite approach in exploiting sensitivity in 3-D space with expectable spatial resolution and positioning accuracy. Moreover, this method effectively reduces the amount of computation and demonstrates the practical potential of EIT for clinical inspection and monitoring.

Keywords: Electrical impedance tomography, combined plane reconstruction, Tikhonov Regularization, volume estimate

DOI: 10.3233/JAE-121623

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 41, no. 4, pp. 433-446, 2013