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• W2154280873 abstract "A new iterative maximum-likelihood reconstruction algorithm for X-ray computed tomography is presented. The algorithm prevents beam hardening artifacts by incorporating a polychromatic acquisition model. The continuous spectrum of the X-ray tube is modeled as a number of discrete energies. The energy dependence of the attenuation is taken into account by decomposing the linear attenuation coefficient into a photoelectric component and a Compton scatter component. The relative weight of these components is constrained based on prior material assumptions. Excellent results are obtained for simulations and for phantom measurements. Beam-hardening artifacts are effectively eliminated. The relation with existing algorithms is discussed. The results confirm that improving the acquisition model assumed by the reconstruction algorithm results in reduced artifacts. Preliminary results indicate that metal artifact reduction is a very promising application for this new algorithm." @default.
• W2154280873 created "2016-06-24" @default.
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• W2154280873 date "2001-01-01" @default.
• W2154280873 modified "2023-10-01" @default.
• W2154280873 title "An iterative maximum-likelihood polychromatic algorithm for CT" @default.
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• W2154280873 doi "https://doi.org/10.1109/42.959297" @default.
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