建立巴西CT检查的国家临床诊断参考水平和可实现剂量:一项前性研究
Mônica Oliveira Bernardo1, Lina Karout2, Flávio Morgado3
1Hospital Miguel Soeiro, Pontificia University Catholic of São Paulo, Brazil.
European journal of radiology
|November 17, 2023
概括
巴西CT辐射剂量显示出显著的机构差异,往往超过欧洲标准. 建立基于临床指示的诊断参考水平对于成人CT扫描中剂量优化至关重要.
科学领域:
- 医疗成像医学成像
- 放射学 放射学是一门学科.
- 辐射剂量优化 辐射剂量优化
背景情况:
- 诊断参考水平 (DRL) 和可达到剂量 (AD) 对于优化计算机断层扫描 (CT) 中的辐射暴露至关重要.
- 建立多参数,基于临床指示的DRL (DRLCI) 和ADs (ADCI) 对于成人CT检查中的辐射剂量管理至关重要.
研究的目的:
- 预期在巴西为成年CT建立基于临床指示的多参数DRL (DRLCI) 和基于临床指示的AD (ADCI).
- 在巴西医疗机构内评估各种临床指示和身体区域的辐射剂量.
主要方法:
- 这是一项前性研究,涉及巴西13个地点的4787名成年患者.
- 收集的数据包括患者人口统计学,临床指标,扫描仪参数和头部,鼻,椎,胸部和腹CT的剂量指标 (CTDIvol,DLP).
- 中位数 (AD) 和第75百分位数 (DRL) CTDIvol和DLP值为每个身体区域和临床适应症计算.
主要成果:
- 巴西的DRL通常与美国的DRL相等或低,但高于欧洲的DRL.
- 辐射剂量与身体质量指数 (BMI) (p < 0.001) 有显著差异,但在同一身体区域内的不同临床适应症之间没有显著差异 (p > 0.1).
- 与过后投影相比,代重建技术导致13种临床指示中的7种辐射剂量较高.
结论:
- 巴西DRLCI在各机构之间存在显著差异,剂量往往超过欧洲基准.
- 缺乏标准化,基于临床指示的协议,导致巴西成年CT的辐射剂量管理不足.
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