Ikawa, Toshiki
Nakata, Kayo
Kishimoto, Kenji
Morishima, Toshitaka
Kanayama, Naoyuki
Morimoto, Masahiro
Konishi, Koji
Miyashiro, Isao
Funding for this research was provided by:
Japan Society for the Promotion of Science (25K19187)
Ministry of Health, Labour and Welfare (23EA1033)
Article History
Received: 14 October 2025
Accepted: 16 March 2026
First Online: 31 March 2026
Declarations
:
: Toshiki Ikawa and Naoyuki Kanayama have served as instructors and received honoraria from Varian Medical Systems. Koji Konishi has received lecture honoraria from Varian Medical Systems. All other authors declare no conflicts of interest.
: This study was approved by the ethics committee of Osaka International Cancer Institute (approval number 24196) and conducted in accordance with the Declaration of Helsinki. The ethics committee of Osaka International Cancer Institute waived the requirement for patient consent because this was a retrospective observational study using existing data without any personally identifiable information, with an opt-out opportunity provided at each participating hospital.