ICRP(国际放射防护委员会)发表的1990年建议书的新补充将引起现行放射防护法规的变化,也可能对核医学的工作方法产生一定影响.建议书中除了在实践方面有一些修订外,在基本概念和定义方面也有一些重要变化:用术语“确定性”(deterministic)代替“非随机性”来描述只发生在某一阈值之上的一种辐射效应,其严重性随剂量而增加,其危害通过细胞的死亡和器官功能的丧失反 New additions to the 1990 Recommendations issued by the International Commission on Radiological Protection (ICRP) will lead to changes in existing radiological regulations and may also have an impact on the working methods of nuclear medicine. In addition to some practical changes in the Recommendations, There are also some important changes in the basic concepts and definitions: Terminology “deterministic ” instead of “non-random ” describes a radiation effect that occurs only above a certain threshold, the severity of which varies with dose While increasing its harm through the death of cells and the loss of organ function