نتایج جستجو برای: collective effective dose
تعداد نتایج: 1008302 فیلتر نتایج به سال:
The collective effective dose to the population from all x-ray examinations in Finland in 2005 was estimated. The numbers of x-ray examinations were collected by a questionnaire to the health care units (response rate 100 %). The effective doses in plain radiography were calculated using a Monte Carlo based program (PCXMC), as average values for selected health care units. For computed tomograp...
The paper presents the results of mapping stray radiation fields in three different radiotherapy treatment rooms equipped with three different Co-60 machines. Based on the distribution of the ambient dose equivalent rate, the effective dose to the personnel under various scenarios has been assessed with regard to their movement and position in the room during the preparation of the machine and ...
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Medical radiation exposure of the U.S. population has not been systematically evaluated for almost 25 y. In 1982, the per capita dose was estimated to be 0.54 mSv and the collective dose 124,000 person-Sv. The preliminary estimates of the NCRP Scientific Committee 6-2 medical subgroup are that, in 2006, the per capita dose from medical exposure (not including dental or radiotherapy) had increas...
Due to the improvement of production technology and the adjustment of energy structure, as well as the town-ownership and private-ownership coal mines (TPCM) were closed or merged by national policy, the number of underground miner has changed comparing with 2004 in China, so collective dose and normalization collective dose in different type of coal mine should be changed at the same time. In ...
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