1　外照射个人剂量监测1999年全院各单位外照射个人剂量监测结果列于表1。全院接受外照射个人剂量监督的工作人员为1073人,所受年集体有效剂量当量为2.27人·Sv,年人均有效剂量当量为2.12mSv,最大个人年有效剂量当量为62.39mSv。一名工作人员所受剂量超过了年剂量限值。同位素? 1 External dose of personal dose monitoring External hospital units in 1999 the individual dose monitoring results are shown in Table 1. The hospital received 1073 external radiation personal dose supervision staff, the annual effective collective dose equivalent of 2.27 people · Sv, the annual effective effective dose equivalent of 2.12mSv, the maximum annual effective effective dose equivalent of 62.39mSv. A worker receives a dose that exceeds the annual dose limit. isotope?