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. 2018 Apr 26;8:6608. doi: 10.1038/s41598-018-25075-7

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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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Schematic laboratory GBPC-CT set-up. Subfigure (A) shows the standard Talbot-Lau configuration using three gratings with grating lines in parallel to the tomographic axis. Subfigure (B) visualizes the tilted grating setup with a rotation of the grating line orientation by α = 45° with respect to the optical axis. The sample is indicated by the cylinder centered around the tomographic axis. G₀ is the source grating, G₁ the phase grating, and G₂ the analyzer grating. The X-ray source and the detector are not shown in this figure.