Study on Three-dimensional Electrical Impedance Circuit Model

Electrical Impedance Tomography is a non-invasive imaging technique based on a feature that the tissues or organs have different conductivities in different physiological and pathological conditions. The study mainly aimed to propose a three-dimensional electrical impedance circuit model and verify its feasibility by three scientific evaluation indexes. Based on conjugate gradient algorithm, using MATLAB software, the data is processed to achieve the images measured by a lab-made three-dimensional electrical impedance tomography data acquisition system. The reconstructed images verifies the feasibility of the proposed circuit model. A serial of image reconstruction experimentations are carried on to analyze the stability and the accuracy of the circuit model. The results show that the proposed circuit model features as good performances and can be used as a physical platform to carry on researches related to EIT algorithm or modelling.