Institution: | 2. Department of Medical Physics, Southern Tohoku Proton Therapy Center, Koriyama, Japan;3. Department of Radiology, Takeda General Hospital, Aizuwakamatsu, Japan;4. Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, Japan;1. Northwest Medical Physics Center, Lynnwood, WA 98036, USA;2. Kaiser Permanente, Seattle, WA 98112, USA |