1. Department of Radiation Oncology Gustave Roussy Cancer Campus Villejuif France
2. Université Paris Sud Kremlin‐Bicêtre France
3. Department of Head and Neck Oncology Gustave Roussy Cancer Campus Villejuif France
4. INSERM1030 Molecular Radiotherapy Villejuif France
5. Department of Radiology Gustave Roussy Cancer Campus Villejuif France