Core Viewpoint - The international standard for radiation protection in medical proton accelerators has been officially released, addressing the need for unified safety regulations in proton therapy centers globally [1] Group 1: Standard Development - The standard was led by China with contributions from experts from nine countries including the USA, France, Canada, and Switzerland [1] - The standard aims to provide a coordinated framework for radiation safety in proton therapy centers, which has been lacking internationally [1] Group 2: Proton Therapy Overview - Proton therapy is recognized as one of the most advanced techniques for tumor radiation treatment, offering precise targeting and fewer side effects, making it a new choice for cancer treatment worldwide [1] - According to the Particle Therapy Co-Operative Group (PTCOG), over 120 proton therapy centers have been established globally [1] Group 3: Challenges Addressed - The absence of standardized safety regulations has led to high costs for shielding walls and structures in proton therapy systems, increased radiation safety risks, and limitations on global promotion [1] - The new standard provides various empirical formulas and calculation methods to unify and standardize the design of shielding for proton therapy centers, addressing key issues such as walls, maze design, penetrations, and sky scatter [1]