随着国民经济和科学技术的飞速发展,Ｘ射线及放射性同位素在许多领域中得到了广泛的应用,而放射性物质所发射出的射线具有看不见、摸不着、危害大的特点,故操作不慎会对公众及工作人员的身体健康造成伤害,尤其是医源性辐射所占比例又较大,据报道〔1〕:医用辐射约占公众所受人工 With the rapid development of the national economy and science and technology, X-rays and radioisotopes have been widely used in many fields. However, radioactive materials emit rays that are invisible, inaccessible and harmful to the environment. Therefore, the operation is inadvertent Will cause harm to the health of the public and the staff, especially the proportion of iatrogenic radiation is larger, it is reported [1]: Medical radiation accounts for the public by the artificial