Absolute quantification 1 Artificial intelligence 1 Clinical & internal medicine 1 Deep learning 1 Dosimetry 1 Dynamic PET 1 Harmonization Imaging biomarkers 1 Medicine 1 PET 1 PET/CT 1 Phantoms 1 Prognosis 1 Quantitative accuracy 1 Radiomics 1 Repeatability 1 SPECT 1 SPECT/CT 1 Tumor delineation 1 Tumor segmentation 1