确定新生儿胸部X射线的基于体重的诊断参考水平.
R Gilley1, L R David2, B Leamy3
1Medical Imaging and Radiation Therapy, University College Cork, Ireland.
Radiography (London, England : 1995)
|June 5, 2023
概括
为新生儿胸部放射 (CXR) 建立基于体重的诊断参考水平 (DRL) 对于优化新生儿重症监护室 (NICU) 辐射剂量至关重要. 这项研究成功地推导出了针对婴儿体重类别的新的DRL.
科学领域:
- 医学物理 医学物理
- 辐射科学 辐射科学
- 儿科成像学 儿科成像学
背景情况:
- 新生儿重症监护室 (NICU) 的患者需要经常进行移动胸部放射 (CXR).
- 由于新生儿的敏感性和长期健康影响的可能性,新生儿的辐射暴露引发了担忧.
- 现有的诊断参考水平 (DRL) 可能无法充分解决新生儿体重的巨大差异.
研究的目的:
- 为新生儿在NICU中接受移动CXR的新生儿建立基于体重的DRL.
- 为优化这种脆弱人群的辐射剂量提供基准.
- 为了确保诊断图像质量,同时尽量减少辐射暴露.
主要方法:
- 新生儿被分为三个体重组:<1000g,1000-2500g和>2500g.
- 在三个月内收集了90名新生儿的前性数据,记录了剂量区域产物 (DAP),千伏 (kVp) 和毫安秒 (mAs).
- 当地DRLs (LDRLs) 通过中位数DAP得出,国家DRLs建议使用第三四分位数值.
主要成果:
- 建议的LDRLs为2.7 mGycm2 (<1000 g),3.7 mGycm2 (1000-2500 g) 和6.6 mGycm2 (>2500 g) 这三种.
- 所有90名新生儿接受的辐射剂量低于11.4mGycm2.
- 82%的DAP值低于该机构之前的7.25mGycm2.2的LDRL.
结论:
- 基于体重的DLR对于管理新生儿的辐射剂量至关重要.
- 该研究建议在新生儿CXR中采用基于体重的DRL类别.
- 这些DRL作为标准化和优化新生儿放射学的基准.
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