This paper proposes 4-D EIT image reconstruction for functional EIT measurements. The approach directly accounts for 3-D interslice spatial correlations and temporal correlations between images in successive data frames. Image reconstruction is posed in terms of an augmented image x̃ and measurement vector F, which concatenate the values from the d previous and future frames. Image reconstruction is then based on an augmented regularization matrix R̃, which accounts for a model with 4-D correlations of image elements, interslices and temporal frames. The temporal correlation matrix is objectively calculated from measurement data. Results of simulations are compared by reconstruction algorithms based on conventional 3-D and proposed 4-D priors.

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Keywords Electrical impedance tomography, Image reconstruction, Regularization, Spatial and temporal priors
Conference 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007
Citation
Dai, T. (Tao), Soleimani, M. (Manuchehr), & Adler, A. (2007). Four-dimensional regularization for electrical impedance tomography imaging. Presented at the 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007.