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. 2021 Jan 15;11:1598. doi: 10.1038/s41598-021-81002-3

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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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Whole-body PET images at different time points after injection of 366 MBq [¹¹C]K-2. Whole-body decay-corrected PET images obtained at different times after injection of 366 MBq [¹¹C]K-2 displayed using the same grayscale. Images were obtained at 11–17 and 83–120 min after intravenous injection of [¹¹C]K-2 in a healthy male subject. All coronal slices were summed to create the images at different time points.