A new projection-based iterative image reconstruction algorithm for dual-energy computed tomography |
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| Authors: | Sungwhan Kim Chi Young Ahn |
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| Affiliation: | 1. Department of Mathematical Sciences, Hanbat National University, Daejeon, Korea.;2. Division of Computational Mathematical, National Institute for Mathematical Sciences, Daejeon, Korea. |
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| Abstract: | Dual-energy CT can be represented as the dual-energy equations by decomposing the linear attenuation coefficient of the X-ray scanned object into two material basis functions of photoelectric absorption and Compton scatter. To solve the dual-energy equations, in this paper, we apply the mean-value theorem for integrals and propose a new projection-based iterative algorithm. We discuss the convergence of the proposed algorithm and carry out various numerical simulations for demonstrating its feasibility. |
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| Keywords: | Dual-energy computed tomography nonlinear integration mean-value theorem of integration Iterative reconstruction method Physics model for X-ray attenuation |
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