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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

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Fig. 1 — Two concordant and two discordant PET images between PET90 and PET45AI In a several hepatic (oblique red arrows) and a spinal bone metastasis (vertical upward red arrows) in a female patient with breast cancer were detected on both original PET90 and denoised PET45AI. In b a concordantly negative PET. In c a low-uptake, sub-centimetric left axillary lymph node (oblique red arrows) in a patient referred for left breast cancer staging, classified indeterminate and exclusively detected on original PET90. In d an indeterminate liver focus exclusively annotated on PET45AI (vertical downward red arrows) in a male patient scanned for advanced lung cancer staging