In response to Liu et al

Affiliations

• ¹ Department of Radiation Oncology, Hyogo Ion Beam Medical Center Kobe Proton Center, Japan; Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan.
• ² QST Hospital, Quantum Medical Science Directorate, National Institute for Quantum and Radiological Sciences and Technology, Inage, Japan.
• ³ Department of Radiation Oncology, Japanese Red Cross Maebashi Hospital, Maebashi, Japan.
• ⁴ Ion Beam Therapy Center, SAGA-HIMAT Foundation, Tosu, Japan.
• ⁵ Gunma University Heavy Ion Medical Center, Maebashi, Japan.
• ⁶ Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Japan.
• ⁷ Department of Radiation Oncology, Yamagata University, Faculty of Medicine, Japan.
• ⁸ National Institute of Radiological Sciences, Quantum Medical Science Directorate, National Institute for Quantum and Radiological Sciences and Technology, Inage, Japan.
• ⁹ Ion-beam Radiation Oncology Center, Kanagawa Cancer Center, Yokohama, Japan. Electronic address: tkamadakcch2@gmail.com.