1. Masaru Takagi, Director, Proton Therapy Center, Sapporo Teishinkai Hospital 2. Education background: 2010: Ph.D., Division of Radiology, Sapporo Medical University, Hokkaido, Japan; 2002: M.D., Sapporo Medical University, Hokkaido, Japan. 3. Work experience: 2022-present: Clinical Professor, Sapporo Medical University; 2021-present: Director, Proton Therapy Center, Sapporo Teishinkai Hospital; 2015-2021: Chief, Proton Therapy Center, Sapporo Teishinkai Hospital; 2015-2021: Associate Clinical Professor, Sapporo Medical University; 2012-2015: Chief, Department of Radiology, Hyogo Ion Beam Medical Center, Hyogo, Japan; 2002-2012: Residents and research associate, Sapporo Medical University. 4. Current and previous research interests: - Radiation biology: radiation sensitizer; - Proton and carbon ion therapy: prostate cancer, H&N, and HCC. 5. Memberships in professional societies and awards: - The Japan Radiological Society (JRS); - The Japanese Society for Therapeutic Radiology and Oncology (JASTRO); - The American Society for Radiation Oncology (ASTRO); - The European Society for Radiotherapy and Oncology (ESTRO); - 2011: Award for Excellent Research Paper at the 70th Annual Meeting of the Japan Radiological Society.