1 King's College London and Guy's and St. Thomas' PET Centre, School of Biomedical Engineering and Imaging Sciences, King's College London, United Kingdom; sally.barrington@kcl.ac.uk.
2 Department of Nuclear Medicine, Cochin Hospital, APHP, Paris Cité University, Paris, France; and.
3 Department of Hematology and Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, The Netherlands.