在约旦提出计算机断层扫描诊断参考水平:一个全国性的多中心分析
Abdel-Baset Bani Yaseen1,2,3, Jamie Trapp2,4, Davide Fontanarosa5,6
1School of Clinical Sciences, Faculty of Health, Queensland University of Technology, Gardens Point Campus, Brisbane, QLD, 4000, Australia.
约旦为CT扫描建立了第一个国家诊断参考水平 (DRL),以优化辐射剂量. 该研究发现剂量变化,但与国际基准相比,通常可以接受的水平.
科学领域:
- 放射学和医学成像学 医学成像学
- 辐射保护 辐射保护
- 卫生政策 卫生政策
背景情况:
- 越来越多的CT利用引发了人们对患者辐射暴露的担忧.
- 诊断参考水平 (DRL) 对于优化辐射剂量,同时保持图像质量至关重要.
- 约旦缺乏国家DRL,这可能会导致医疗机构之间显著的剂量变化.
研究的目的:
- 为约旦共同的CT检查建立第一个国家诊断参考水平 (DRL).
- 评估当前的辐射剂量水平,并确定导致约旦医院剂量变化的因素.
- 为优化辐射剂量和提高CT成像质量提供基准.
主要方法:
- 这是一项多中心的回顾性研究,涉及约旦10家医院的4310名成年患者.
- 从PACS和RIS.收集辐射剂量指标 (CTDIvol和DLP) 的数据.
- 使用中位数剂量值的75百分位数和回归分析来确定剂量预测因子,推导拟议的国家DRL.
主要成果:
- 在参与的医院中观察到CT辐射剂量的显著变化.
- 头部CT扫描显示最高的中位数剂量 (CTDIvol: 65mGy,DLP: 1572mGy·cm),而高分辨率胸部CT显示最低.
- mAs的乘积是剂量的主要预测指标;约旦CT剂量通常与国际DRL相比,L-脊柱CT是例外.
结论:
- 该研究成功地为约旦的14项常见CT检查提出了第一个国家DRL.
- 这些DRL作为剂量优化,协议标准化的关键基准,并强调需要持续的放射学家培训.
- 未来的努力应集中在将DRL开发扩展到儿科CT,并将剂量监测纳入国家质量框架.
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