中国安徽省の第三次病院における放射線業務従事者の職業被曝の評価、2013年から18年の間

Assessment of Occupational Exposure of Radiation Workers At a Tertiary Hospital in Anhui Province, China, During 2013-18.

• Guoliang Zhang
• Jianmin Shen
• Pin Bao
• Ziqin Yao
• Yuan Yuan
• Shiyuan Fang

抄録

2013年から18年の間に中国の第三次病院で行われた放射線作業者の職業放射線被曝に関するデータを分析し、病院と保健行政部門の意思決定のためのアドバイスを提供した。放射線作業者の被ばく記録は合計1255件収集された。2013年から18年の間の放射線作業者の年間平均実効線量は0.4977mSvで、0～1mSvの記録が1150件（91.63％）、1～2mSvの記録が91件（7.25％）、2～5mSvの記録が10件（0.80％）、5mSvを超える記録が4件（0.32％）であった。放射線従事者の平均年間実効線量には、2015年を除く職種間で有意な差があり、病院や行政当局が核医学・介入部門の放射線従事者にもっと注意を払うべきであることが示された。平均年間実効線量は、2017年を除き、男性と女性の間で有意差はなく、その年は女性の方が男性よりも個人線量が高かった。医師、看護師、放射線技師の平均年間実効線量には、2016年と2017年を除いて有意差はなかった；その期間中、看護師の個人線量は医師や放射線技師の個人線量よりも高かった。

Data on occupational radiation exposure of radiation workers at a tertiary hospital in China during 2013-18 were analyzed to provide decision-making advice for hospitals and health administrative departments. A total of 1255 exposure records of radiation workers were collected. The average annual effective doses of radiation workers during 2013-18 was 0.4977 mSv, with 1150 (91.63%) records ranging between 0 and 1 mSv, 91 (7.25%) between 1 and 2 mSv, 10 (0.80%) between 2 and 5 mSv and 4 (0.32%) records exceeding 5 mSv. There was a significant difference in the average annual effective dose of radiation workers among different occupational categories except in 2015 indicating that hospitals and administrative authorities should pay more attention to the radiation workers in the nuclear medicine and intervention department. The average annual effective doses did not show significant differences between male and female workers except in 2017; in that year the average individual dose of female workers was higher than male workers'. There were no significant differences in the average annual effective doses among doctors, nurses and radiologic technologists except in 2016 and 2017; during that period the individual dose of nurses was higher than doctors' and radiologic technologists'.

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