Purpose To meet the government standard basic criterion GB18871-2002 for radiation protection and safety, and to optimize the design of the shielding protection of medical linear accelerator.

• 摘要目的满足国家标准GB18871-2002电离辐射防护与辐射安全基本标准的同时，优化设计医用加速器室的辐射屏蔽防护。