Évaluer la réponse en cancérologie : l’imagerie un outil essentiel ?

Identifying patients for whom the treatment is effective is an absolute necessity regarding the effectiveness of their care and ethics and avoiding them from losing opportunities and unnecessary adverse effects. It is also an economic necessity due to the very high cost of new treatments called “expensive molecules”, in particular immunotherapy, which poses problems of access to these treatments and constitutes a real financial challenge for health systems. In clinical routine as in research, imaging is the essential tool for deciding the success or failure of treatment, with a major medico-economic impact if we consider that these very expensive treatments are only effective in a fraction of patients and that they do not always bring a major benefit.