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. 2018 Nov 7;2:30. doi: 10.1186/s41747-018-0064-3

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — Scatterplots of the effect of radiation dose and reconstruction on the percentage emphysema. The y-axis displays the percentage emphysema with FBP at routine dose (reference), while the x-axis displays the percentage emphysema at reduced dose with FPB (a) and with HIR (b) and MIR (c). Values below the diagonal represent an overestimation of the percentage of emphysema as compared to FBP and routine dose, while values above the diagonal represent an underestimation. FBP filtered back projection, HIR hybrid iterative reconstruction, MIR model-based iterative reconstruction