Corrigendum: Radioactivity and space range of ultra-low-activity for in vivo off-line PET verification of proton and carbon ion beam-a phantom study

Affiliations

• ¹ College of Physics, Sichuan University, Chengdu, China.
• ² Shanghai Key Laboratory of Radiation Oncology, Shanghai, China.
• ³ Department of Nuclear Medicine, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai, China.
• ⁴ Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai, China.
• ⁵ Department of Radiotherapy, Shanghai Proton and Heavy Ion Center (SPHIC), Shanghai, China.