负担得起的辐射瘤实时呼吸监测系统
Mandeep Kaur1, Hania Al-Hallaq1, Marian Axente1
1Department of Radiation Oncology, Emory University School of Medicine, Atlanta, Georgia, USA.
Journal of applied clinical medical physics
|August 31, 2025
概括
一个新的,经济高效的光学成像系统准确地监测放射治疗的呼吸运动. 这项技术提高了在放射治疗期间精确向瘤的可访问性.
科学领域:
- 医学物理
- 放射治疗技术
- 光学成像
背景情况:
- 精确的呼吸运动管理对于有效的胸部和腹部放射治疗至关重要.
- 现有的表面导向辐射疗法系统是精确的,但通常是昂贵和复杂的.
- 具有成本效益的光学成像可以改善在放射治疗中的精确呼吸监测.
研究的目的:
- 开发和评估用于放射治疗的低成本实时呼吸运动监测系统.
- 通过虚拟和临床比较来评估系统的准确性和可靠性.
- 确定使用现成的光学技术进行呼吸门的可行性.
主要方法:
- 使用深度摄像头和自定义软件开发了实时呼吸监测系统.
- 使用深度和光学数据在3D中追踪表面替代物.
- 用静态/动态幻影验证系统性能,并与临床系统进行3D跟踪比较.
主要成果:
- 该系统在静态目标和1D运动方面表现出高精度 (TSR ≤1mm>98%在560mm).
- 对于大多数测试条件,皮尔森相关性仍然很高 (> 0. 98).
- 与临床系统相比,布兰德-阿尔特曼分析显示偏差极小,一致性极窄.
结论:
- 开发的系统适用于放射治疗中的实时呼吸运动监测.
- 这种具有成本效益的解决方案可以提高精确的呼吸监测的可用性.
- 这项技术为提高辐射疗法的准确性提供了可行的替代方案.
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