在光学指导干预中,辐射防护窗的反射辐射 - - 需要考虑的患者剂量?
Pernilla Jonasson1, Charlotta Lundh1,2, Jens Hemmingsson2
1Department of Biomedical Engineering and Medical Physics, Sahlgrenska University Hospital, Gula Stråket 2B, Plan 0, Gothenburg SE-413 45, Sweden.
Radiation protection dosimetry
|March 13, 2026
概括
辐射防护窗通过反射微小地增加了患者的辐射剂量. 这种微小的增加是可以忽略不计的,当窗是合理的职业辐射保护在光学引导的程序.
科学领域:
- 医学物理 医学物理
- 辐射保护 辐射保护
- 生物医学工程 生物医学工程
背景情况:
- 辐射保护被用于光学引导的手术中,以保护医务人员免受散射辐射的影响.
- 人们对患者辐射剂量的潜在增加存在担忧,原因是这些窗的辐射反射.
研究的目的:
- 量化来自保护窗的患者背向散射辐射剂量.
- 评估这种反射辐射在光学引导程序中的临床意义.
主要方法:
- 热发光剂量计 (TLD) 用于测量来自三个不同的防护窗的反射辐射.
- 测量是在多甲基甲酸 (PMMA) 幻影的顶部和各种深度进行的.
- 蒙特卡洛模拟被用来从理论上量化来自材料的反射辐射.
主要成果:
- 背散辐射根据窗材料而异.
- 测量后背散射辐射小于0.001倍的初级辐射束剂量.
- 这包括来自PMMA幻影本身的反向散射.
结论:
- 护对患者辐射剂量的增加是轻微的,通常是微不足道的.
- 使用辐射防护窗是可以接受的,如果由职业辐射保护的好处证明是合理的.
- 关于窗使用的临床决定应该权衡人员安全与最小的患者剂量增加.
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