Image reconstruction using voltage-current system in electrical impedance tomography

Abstract

Electrical impedance tomography (EIT) has been used as an alternative imaging modality to visualize binary mixture like two-phase flows because of its high temporal resolution for monitoring fast transient processes. In this paper, voltage applied and current measured (VC) system based on complete electrode model is applied to image binary mixtures. The forward problem is formulated with the conductance matrix and a non-iterative inverse method is used to estimate the conductivity distribution. The proposed method with VC system needs simpler hardware as compared to conventional current applied and voltage measured system. Both numerical simulations and phantom experiments have been carried out to evaluate the performance of the proposed method through quantitative parameters. Results show a promising performance of VC system as an imaging modality for binary mixtures. (C) 2014 Elsevier B.V. All rights reserved.