一、引言ICRU 39针对外照射辐射防护定义了4个新防护量。按这些量定度的仪器,可用来估计外照射辐射对人体产生的有效剂量当量和皮肤剂量当量。新防护量已引起普遍重视。欧洲共同体委员会与西德物理技术研究院,在ICRU赞助下于1985年3月联合组织了在西德布朗斯威克召开的“外照射辐射防护量”讨论会,专门讨论如何实施ICRU第39号报 I. INTRODUCTION ICRU 39 defines four new levels of protection against external radiation protection. An instrument calibrated to these quantities can be used to estimate the effective dose equivalent and the dermal dose equivalent of external radiation produced by the human body. The amount of new protection has caused widespread attention. The Commission of the European Communities and the German Institute of Physical Technology, jointly sponsored by the ICRU in March 1985, organized a seminar on “Exposure to Radiation Protection” at Brindisi, West Germany, to discuss how to implement ICRU No. 39 Newspaper