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Electrical impedance tomography (EIT) is a medical imaging technique in which an image of the conductivity or permittivity of part of the body is inferred from surface electrical measurements. In the paper an approach of a fast, real-time, three dimensional human lung's detection and imaging based on node back-projection algorithm with a 64 electrodes EIT system is introduced. The results shows that...
The approximately closed formula of voltage distribution on the boundary was resulted from those discrete data measured from electrodes by polynomial curve fitting method (PCFM). In addition, an assumption of equivalent potential distribution was proposed according to equivalent potential relation between the boundary voltage and inner node. Then, the correlation between the variation of inner node...
The polynomial curve fitting (PCF) method is used firstly on electrical impedance tomography (EIT) to find out the polynomial function of boundary potential distribution according to the measured data in this work. The potential values calculated from the polynomial function can be regarded as measured data. So enough data can be provided to satisfy the requirements of various algorithms. The potential...
The modified Newton-Raphson (MNR) method is used to solve the inverse resistivity problem in this paper. Using Tikhonov regularization method, comparisons among the L-curve method, the zero-crossing (ZC) method and the generalized cross validation (GCV) method are carried out for determining the regularization parameters of MNR method. By these criterions the appropriate regularization parameters...
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