Neural network algorithm for image reconstruction using the “grid-friendly” projections

R Cierniak - Australasian Physical & Engineering Sciences in …, 2011 - Springer
Australasian Physical & Engineering Sciences in Medicine, 2011Springer
The presented paper describes a development of original approach to the reconstruction
problem using a recurrent neural network. Particularly, the “grid-friendly” angles of
performed projections are selected according to the discrete Radon transform (DRT)
concept to decrease the number of projections required. The methodology of our approach
is consistent with analytical reconstruction algorithms. Reconstruction problem is
reformulated in our approach to optimization problem. This problem is solved in present …
Abstract
The presented paper describes a development of original approach to the reconstruction problem using a recurrent neural network. Particularly, the “grid-friendly” angles of performed projections are selected according to the discrete Radon transform (DRT) concept to decrease the number of projections required. The methodology of our approach is consistent with analytical reconstruction algorithms. Reconstruction problem is reformulated in our approach to optimization problem. This problem is solved in present concept using method based on the maximum likelihood methodology. The reconstruction algorithm proposed in this work is consequently adapted for more practical discrete fan beam projections. Computer simulation results show that the neural network reconstruction algorithm designed to work in this way improves obtained results and outperforms conventional methods in reconstructed image quality.
Springer
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