1Cancer Center, Peking University Third Hospital, Beijing, China; Department of Radiation Oncology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory for Interdisciplinary Research in Gastrointestinal Oncology, Peking University Third Hospital, Beijing, China.
2Collaborative Innovation Department of Radiotherapy Business Unit, Shanghai United Imaging Healthcare Co., Ltd., Shanghai, China.
3Department of Oncology, Chengyang People's Hospital, Qingdao, China.
4Cancer Center, Peking University Third Hospital, Beijing, China; Department of Radiation Oncology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory for Interdisciplinary Research in Gastrointestinal Oncology, Peking University Third Hospital, Beijing, China. Electronic address: pengran@bjmu.edu.cn.
5Department of Radiation Oncology, Peking University Third Hospital, Beijing, China. Electronic address: junjiewang_edu@sina.cn.
6Cancer Center, Peking University Third Hospital, Beijing, China; Department of Radiation Oncology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory for Interdisciplinary Research in Gastrointestinal Oncology, Peking University Third Hospital, Beijing, China. Electronic address: wanghaobysy@bjmu.edu.cn.