设备技术对光学指导的胃肠道手术中基准水平的影响
1Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA.
概括
在胃肠道内镜检查期间,光镜设备之间的辐射剂量有显著差异. 在这些程序中,建议基于技术的诊断参考水平用于剂量优化.
科学领域:
- 医疗成像医学成像
- 放射学 放射学是一门学科.
- 胃肠病学 胃肠病学
背景情况:
- 光学指导的胃肠内镜程序是常见的.
- 辐射剂量因使用的设备而有很大差异.
- 建立基准水平对于剂量优化至关重要.
研究的目的:
- 评估光镜设备技术对辐射剂量指标的影响.
- 为了确定基准点空气克尔玛 (Ka,r),空气克尔玛面积产物 (PKA) 和光镜时间的基准水平.
- 为了研究不同胃肠道内镜手术的剂量变化.
主要方法:
- 追溯分析了9459个光学指导的胃肠内镜手术.
- 包括来自三个不同的光系统的数据:欧米茄CS-50 e-View,GE精密500D和西门子Cios Alpha.
- 对四种手术类型的辐射剂量指标 (Ka,r,PKA,光镜时间) 的分析.
主要成果:
- 在设备类型之间观察到中位数Ka,r (高达8.5:1比) 和PKA (高达2.7:1比) 的显著差异.
- 光镜时间在分析系统中显示出较少的变化 (高达1.1:1比).
- 对于Ka,r,PKA和光镜时间的中位数和第75个百分点,为每个手术类型和设备建立了中位数和75个百分点.
结论:
- 光镜设备技术是影响胃肠内镜中辐射剂量的主要因素.
- 当前的剂量变化需要考虑特定技术的诊断参考水平.
- 该研究提供了用于剂量优化和不同成像系统之间的比较的基准数据.
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