1. Department of Electronics, Information and Bioengineering Politecnico di Milano Milan Italy
2. Medical Physics Unit National Center for Oncological Hadrontherapy (Fondazione CNAO) Pavia Italy
3. Clinical Department National Center for Oncological Hadrontherapy (Fondazione CNAO) Pavia Italy
4. Clinical Bioengineering Unit National Center for Oncological Hadrontherapy (Fondazione CNAO) Pavia Italy
5. Radiology Unit National Center for Oncological Hadrontherapy (Fondazione CNAO) Pavia Italy