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刘学成、宁淑香(锦州市职业病防治研究所)报道:为制定X线诊断所致居民医疗照射限制原则和标准,建议把医用X线被检者分为三个类群:第一类为由于肿瘤性疾患或怀疑肿瘤并处于危重状态而进行X线检查的病人,这类人通常年龄较大,辐射的随机效应又具有相当长的潜伏期,所以应主要防止非随机效应的发生,其剂量限值应低于非随机效应的阈值,即各组织器官的剂量限值为0.5Sv·~(-1),眼晶体为0.15Sv·a~(-1)。第二类为由于非肿瘤
Liu Xuecheng, Ning Shuxiang (Institute of Occupational Disease Prevention and Treatment of Jinzhou) reported: In order to establish the principles and standards of medical radiation restriction for residents caused by X-ray diagnosis, it is suggested that the medical X-ray subjects be divided into three groups: the first category is tumor Patients with X-rays who are at risk of developing or having a debilitating disease or who are suspicious of tumors are usually older and have a considerably longer incubation period for random effects of radiation and should therefore primarily prevent non-random effects from occurring and their dose limits Should be lower than the threshold of non-random effects, that is, the dose limit of each tissue and organ is 0.5Sv · -1, the eye crystal is 0.15Sv · a -1. The second category is due to non-tumor