更新希腊计算机断层扫描的国家诊断参考水平:优化患者保护方面的挑战
George Simantirakis1, Costas J Hourdakis1, Maria Kalathaki1
1Greek Atomic Energy Commission, P.O. Box 60092, 153 10, Agia Paraskevi, Athens, Greece.
European journal of radiology
|March 20, 2024
概括
希腊对成年人CT扫描的诊断参考水平 (DRL) 进行了修订,显示了适度的剂量减少. 由于CT使用量增加和患者安全技术不断发展,持续优化至关重要.
科学领域:
- 医疗成像医学成像
- 辐射物理学 辐射物理学
- 辐射保护 辐射保护
背景情况:
- 计算机断层扫描 (CT) 的使用在全球范围内正在增加.
- 诊断参考水平 (DRL) 对于优化患者的辐射剂量至关重要.
- 定期修订DRL是必要的,以反映技术进步和使用模式.
研究的目的:
- 修订希腊成人CT检查的国家诊断参考水平 (DRL).
- 建立新的CT检查的DRL,包括部,椎,盆骨-部,冠状动脉 (Ca) 评分和心脏计算机断层扫描血管学 (CCTA).
- 评估当前的剂量测量实践,并确定需要优化的领域.
主要方法:
- 一项国家调查从120个医疗机构的127个CT扫描仪收集了剂量计数据 (CTDIvol和扫描DLP) (2019-2022).
- 数据占全国CT扫描仪的25%,确保了地理和技术的多样性.
- 对7项现有检查进行了修订,并为5项新检查制定了DRL.
主要成果:
- 与最初的DLR相比,修订后的DLR显示CTDIvol平均下降15%,扫描DLP平均下降7%.
- 与其他国家研究中发现的结果相比,观察到的剂量减少是适度的.
- 在不同扫描仪中发现了剂量测量值和扫描长度的显著差异,突出显示了标准化的必要性.
结论:
- 希腊正式通过的修订后的DRL旨在优化CT成像中的患者辐射剂量.
- 像代重建 (IR) 这样的先进技术显示了剂量降低的潜力,但统一的实施仍然是一个挑战.
- 鉴于CT利用率不断上升和技术进化,不断努力优化至关重要.
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