["Definition of target volume: When et how can the radiation oncologist use PET?"] / « Définition des volumes cibles : quand et comment l'oncologue radiothérapeute peut-il utiliser la TEP ? ¼.

PET/CT has become a standard examination in oncology but is probably still underused for radiotherapy planning. However, except for the clinical research data that shows the interest of this examination in considering personalized and adaptive radiotherapy, it is also important in defining target volumes. However, before using it in clinical practice, a few prerequisites are required to know the acquisition and segmentation methods. Ideally, PET/CT should become a standard examination for radiotherapy departments in the same way as planning CT and tomorrow as MRI.