1. Key Laboratory of OptoElectronic Science and Technology for Medicine Ministry of Education Fujian Provincial Key Laboratory for Photonics Technology Fujian Normal University Fuzhou Fujian 350001 China
2. College of Physics and Electronic Information Engineering Minjiang University Fuzhou Fujian 350001 China
3. Department of Radiation Oncology, Clinical Oncology School of Fujian Medical University Fujian Cancer Hospital Fuzhou Fujian 350001 China
4. Department of Radiation Oncology Shanghai Proton and Heavy Ion Center Fudan University Cancer Hospital Shanghai 201321 China