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. 2018 Oct 26;8:15884. doi: 10.1038/s41598-018-33997-5

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Tomographic reconstruction results of a liver cirrhosis sample using filtered back projection of differential phase-contrast measurements. Quadrants 1 and 3 show the measurement results of geometric magnification with an effective pixel size of 28 μm. In quadrants 2 and 4 oversampling is used to achieve the same effective pixel size. The increased sharpness in the super-resolution measurement is clearly visible while details are blurred away in the geometrical magnification by the extended source profile. A PMMA rod is used for calibration and ESF evaluation in Fig. 5.