**Lioe-Fee de Geus-Oei**

Lioe-Fee de Geus-Oei (MD, PhD) is a Professor of Radiology, particularly Nuclear Medicine, at the Leiden University Medical Center (LUMC), where she is Head of the Nuclear Medicine Research Group, chairwoman of the Education Management Team, and a member of the Radiology Management Team. In addition, she is a part-time clinical Professor of Molecular Imaging, Innovation and Translation at the University of Twente and Medical Delta Professor at the LUMC and Delft University of Technology. She is also on the Executive Board of the European Organisation for Research and Treatment of Cancer (EORTC) Imaging Group in Brussels and on the Oncology and Theranostics Committee of the European Association of Nuclear Medicine (EANM) in Vienna.

#### **Floris H. P. van Velden**

Floris H. P. van Velden (PhD) is a Medical Physics Expert in Nuclear Medicine at the Radiology department of the LUMC, where he is the Head of the Medical Technology unit. He is a member of the Radiomics and Big Data Subcommittee of the EORTC Imaging Group in Brussels and a member of the Imaging Committee of the Haemato Oncology Foundation for Adults in the Netherlands (HOVON) in Amsterdam. His research currently focuses on quantification in PET/CT and SPECT/CT, and predominantly on radiomics and image reconstruction.
