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. 2017 Dec 11;7:17295. doi: 10.1038/s41598-017-17543-3

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© The Author(s) 2017

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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Comparison of experimental and calculated lateral dose profiles. The upper row shows the lateral dose profiles at 1 cm-depth (left) and the depth dose curve (right) for the central minibeam of the thinner collimator (FWHM of the central peak is 696 ± 20 μm at 1 cm-depth). The lower row depicts the lateral profiles at 1 cm-depth resulting after irradiation with the wider MBRT collimator (FWHM of the central peak is 968 ± 77 μm) and with the fixed SARPP collimator (irradiation at the isocentre).