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. 2021 Nov 14;8:79. doi: 10.1186/s40658-021-00424-0

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© The Author(s) 2021

Open AccessThis 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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Fig. 2 — Representative results of the automatic brain extractor. a, b In both of the “torso”, PET covering up to mid-thigh and “total-body” PET covering whole heights of body the extractor successfully located the brain. c The extractor was also capable of identifying brain when the artifact caused by radiopharmaceutical injection was projected to the brain at the MIP image. d When the brain volume was not fully included, the extractor classified the image as “not containing entire brain”