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. 2017 Mar 8;7:44143. doi: 10.1038/srep44143

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This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Slices at the central level of the 3-D images reconstructed by (a) mono-energy imaging just above the K-edge of I, (b) mono-energy imaging just below the K-edge, (c) subtracting the image in (b) from the image in (a), and (d) dual-energy imaging.