1. Department of Electronics Information and Bioengineering CartCasLab, Politecnico di Milano (MI) Milan Italy
2. Center for Proton Therapy Paul Scherrer Institute Villigen Switzerland
3. Centro Nazionale di Adroterapia Oncologica (CNAO) Pavia (PV) Italy
4. Univ Lyon, CREATIS, INSA‐Lyon Université Claude Bernard Lyon 1, UJM‐Saint Etienne, CNRS Inserm, CREATIS UMR5220, U1294 Lyon France