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在一个大型大学医院的光学指导的儿科中央静脉导管安置程序中确定典型的剂量值

Georgia A A Alves¹, Rochelle Lykawka², Thatiane A Pianoschi³

¹Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil; Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil.

Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB)

|January 30, 2026

概括

本研究确定了巴西儿科光学引导中心静脉导管 (CVC FGI) 放置的典型剂量值 (TVD). 这些发现对于优化辐射剂量和提高儿科放射学患者安全至关重要.

科学领域:

放射学放射学是一门学科.
医学物理医学物理
儿科成像学儿科成像学

背景情况:

诊断参考水平 (DRL) 在医学成像中对辐射剂量优化至关重要,特别是在儿科手术中.
确定典型剂量值 (TVD) 是建立本地或国家DRL的基本步骤.
光学引导的中央静脉导管 (CVC FGI) 放置是一种常见的儿科干预程序,在此过程中,辐射剂量监测至关重要.

研究的目的:

介绍巴西儿科患者的光学引导中央静脉导管 (CVC FGI) 放置典型剂量值 (TVD) 的首次评估.
提供可以在巴西背景下为CVC FGI程序建立DRL的数据.
为促进儿童放射学中剂量优化的国际努力做出贡献.

主要方法:

在一家大型大学医院进行了816名 (按体重) 和832名 (按年龄) 儿科患者的回顾性分析,这些儿科患者在2017年至2024年期间接受了CVC FGI手术.
使用六个移动手术C臂装置 (四个图像强化器,两个平板探测器) 进行了手术.
典型剂量值 (TVD) 是根据ICRP 135指导方针,根据年龄和体重分层的kerma-area产物 (Pka) 的中位数 (Q2) 计算出来的. 斯皮尔曼相关性评估了Pka,体重和年龄之间的关联.

主要成果:

按重量 (kg) 分层的Pka (Gy cm2) 的典型剂量值 (TVD) 是:<5 (0.044),5<15 (0.080),15<30 (0.143),30<50 (0.189) 和50<80 (0.370).
按年龄 (年) 分层的TVDs是:<1 (0.067),1<5 (0.088),5<10 (0.170),10<15 (0.312) 和≥15 (0.279).
在Pka和体重 (ρ=0.29) 和Pka和年龄 (ρ=0.27) 之间观察到弱但具有统计学意义的相关性,体重是主要预测因素.

结论:

光学指导干预的典型剂量值 (TVD),特别是使用外科C臂的干预,作为重要的质量指标.
这项研究为巴西对儿科CVC FGI手术实施DRL提供了必要的数据.
这些发现支持在儿科放射学实践中对剂量优化和提高患者安全的努力.

关键词:

通过中央静脉导管导管.诊断参考水平是指诊断参考水平.光学指导的程序光学指导的程序儿科干预放射学儿科干预放射学辐射剂量辐射剂量辐射剂量

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