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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Cross-sectional slices of reconstructed images from 50 projection views obtained from four cases: (a) exact image; (b) the proposed algorithm; (c) cross-validation; (d) arbitrary setting; (e) CGLS. The display window is [0–0.02].