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. 2021 Jun 23;11:13191. doi: 10.1038/s41598-021-92637-7

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Image noise along the z-axis obtained in the lung tissues in the chest area for image acquisitions with additional mattresses after automatic and manual phantom centering. (b) Image noise along the z-axis obtained in the soft tissues in the abdomen-pelvis area for image acquisitions with additional mattresses after automatic and manual phantom centering.