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- W2034658223 abstract "Electrical impedance tomography (EIT) calculates images of the body from body impedance measurements. While the spatial resolution of these images is relatively low, the temporal resolution of EIT data can be high. Most EIT reconstruction algorithms solve each data frame independently, although Kalman filter algorithms track the image changes across frames. This paper proposes a new approach which directly accounts for correlations between images in successive data frames. Image reconstruction is posed in terms of an augmented image and measurement vector , which concatenate the values from the d previous and future frames. Image reconstruction is then based on an augmented regularization matrix , which accounts for a model of both the spatial and temporal correlations between image elements. Results are compared for reconstruction algorithms based on independent frames, Kalman filters and the proposed approach. For low values of the regularization hyperparameter, the proposed approach performs similarly to independent frames, but for higher hyperparameter values, it uses adjacent frame data to reduce reconstructed image noise." @default.
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- W2034658223 date "2007-06-26" @default.
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- W2034658223 title "Temporal image reconstruction in electrical impedance tomography" @default.
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- W2034658223 doi "https://doi.org/10.1088/0967-3334/28/7/s01" @default.
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