辐射剂量减少和图像质量评估侧侧腰椎外射的腰椎外射
Diego Nocetti1, Kathia Villalobos1, Nelson Marín2
1Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Tarapacá, Avenida 18 de septiembre N°2222, 1010069, Arica, Chile.
Heliyon
|September 8, 2023
概括
使用铜或过器优化侧腰椎X射线,可显著降低患者辐射剂量约60%左右. 这种优化保持了诊断图像质量,对于资源有限的设置是有益的.
科学领域:
- 辐射物理学 辐射物理学
- 医疗成像医学成像
背景情况:
- 数字放射学优化对于最小化患者辐射风险和最大化诊断益处至关重要.
- 暴露参数和过是实现最佳放射性结果的关键因素.
研究的目的:
- 通过调整的暴露参数和额外的过来评估侧侧腰椎投射的优化.
- 为了评估低成本过器对图像质量和辐射剂量的影响.
主要方法:
- 评估的峰值电压,管载荷和过器 (铜,,黄铜,) 在125张X射线图上.
- 使用信号与噪声比率 (SNR) 和对比与噪声比率 (CNR) 评估物理图像质量,并使用它们的优点图 (FOM).
- 用反射散射器 (ESAK) 测量入口表面空气基质,以量化辐射剂量.
主要成果:
- 铜和过器平均减少了60%的ESAK,而不会影响诊断图像质量.
- 记录了标准图像质量指标以进行比较.
- 铜和过器在研究条件下增加了辐射剂量.
结论:
- 优化腰椎投影可以降低辐射剂量,同时保持诊断图像质量.
- 低成本的铜和过器为减少剂量提供了可行的解决方案,特别是在资源有限的环境中.
- 进一步研究额外的放射性优化策略是有必要的.
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