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. 2022 May 20;49(11):3750–3760. doi: 10.1007/s00259-022-05800-1

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© The Author(s) 2022

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. 3 — Concordant lesions A 77-year-old man (78 kg; BMI 24 kg/m²) with multifocal lymphadenopathy of unknown origin. MIP views (a) and axial PET slices (b) of [¹⁸F]FDG PET90, PET45, and PET45AI. Detection of small left suprahilar lymphadenopathy in all PET series (vertical arrows in b) with respective standard SUL_max of 1.8 (PET90), 2.3 (PET45), and 1.7 g/ml (PET45AI). Nonetheless, PET45 images are noisier than PET90 or PET45AI images, particularly in the liver