在计算机断层扫描检查期间,助理的透镜曝光和剂量信息之间的关系
Hajime Ito1,2, Kosuke Matsubara3, Ikuo Kobayashi4
1Department of Radiology, Eastern Chiba Medical Center, 3-6-2, Okayamadai, Togane, Chiba 283-8686, Japan.
概括
在诊断CT扫描期间,辅助眼镜辐射暴露与剂量长度产品 (DLP) 有关. 具体的任务,比如具体的任务.
科学领域:
- 辐射保护 辐射保护
- 医学物理 医学物理
- 职业健康 职业健康 职业健康
背景情况:
- 国际辐射保护委员会制定了职业眼镜镜片剂量极限 (年平均20mSv,年最大50mSv).
- 有限的数据存在于诊断计算机断层扫描 (CT) 期间的辅助眼镜暴露及其与剂量参数的相关性.
研究的目的:
- 在诊断CT扫描期间测量辅助眼镜曝光.
- 调查辅助镜片剂量与各种参数之间的关联,包括辅助类型和剂量长度产品 (DLP).
主要方法:
- 使用光学刺激的发光剂量计来测量助理的透镜曝光.
- 记录了辅助类型 (通风,头部持有,身体持有,手臂举起),扫描时间,mAs,扫描长度和DLP.
- 使用克鲁斯卡尔-瓦利斯测试对这些参数进行了透镜位置的空气基马分析.
主要成果:
- 不同的辅助类型之间在镜头位置上的空气基马没有显著差异 (p<0.05).
- 辅助镜片剂量与DLP相关,根据辅助类型和距离CT门架的距离,相关性强度各不相同.
- "抬起患者的手臂"和"头部持有"与"辅助呼吸"和"身体持有"相比,由于桌子的运动较少,与DLP有更强的相关性.
结论:
- 在CT辅助期间,透镜剂量与DLP的相关性最强.
- 涉及较少桌子运动的辅助类型 ("举起患者的手臂","头部持有") 显示出更强的相关性,突出了职业辐射暴露中近距离和运动的重要性.
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