Usefulness of a lead-acrylic shield for reducing lens dose of assistant in x-ray CT examination
Usefulness of a lead-acrylic shield for reducing lens dose of assistant in x-ray CT examination
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铅丙烯酸屏蔽在减少 X 射线 CT 检查中辅助镜头剂量方面的作用
DOI：
10.1088/1361-6498/ac7919
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发表时间：
2022
影响因子：
1.5
通讯作者：
Ochi Shigehiro
中科院分区：
文献类型：
--
作者：
Ito Hajime;Matsubara Kosuke;Kobayashi Ikuo;Sakai Takayuki;Isobe Tomonori;Yanagawa Noriyuki;Ochi Shigehiro
在计算机断层扫描（CT）检查，有用的保护眼镜，以减少镜头暴露于助手已被报道。本研究旨在比较使用铅-丙烯酸保护罩和防护眼镜（0.07 mm Pb、0.5 mm Pb）辅助CT检查时的减剂量效果。对有无铅-丙烯酸屏蔽的CT检查室空气剂量分布进行了比较。结果表明，在CT门框孔处安装铅-丙烯酸屏蔽层可显著降低散射辐射量。此外，使用丙烯酸铅保护罩比使用防护眼镜时，辅助通气时助手晶状体处空气颗粒的减少率更高，头部保持时为95.7%，辅助通气时为76.1%。
In computed tomography (CT) examinations, the usefulness of protective glasses for reducing lens exposure to assistants has been reported. The present study aimed to compare the dose reduction effect for assistants with lead-acrylic shields and protective glasses (0.07 mm Pb, 0.5 mm Pb) during CT examination. The air dose distribution in a CT examination room with and without a lead-acrylic shield was compared. It was found that the amount of scattered radiation was significantly reduced by installing a lead-acrylic shield at the CT gantry aperture. Moreover, the reduction rate of air kerma at the assistant's lens was higher using the lead acrylic shield than with the protective glasses—95.7% during head holding and 76.1% during assisted ventilation.