使用单光子雪崩二极管探测器实时检测单片氧气信号
Arran Sykes1, Lisa Saalbach1, Sam Benson2
1Institute of Photonics and Quantum Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom.
Biomedical optics express
|August 14, 2025
概括
一个新的检测系统可以在光动力学治疗 (PDT) 期间实时监测单片氧 (O) 生产. 这一进步允许立即调整轻量剂量,提高患病组织的治疗疗效.
科学领域:
- 生物医学工程 生物医学工程
- 摄影化学的使用.
- 医学物理 医学物理
背景情况:
- 单片氧 (O2) 是光动力学疗法 (PDT) 中的关键细胞毒剂.
- 有效的PDT需要精确控制单片氧生产.
- 目前的方法可能缺乏实时监控和调整的速度.
研究的目的:
- 开发一种高度光敏的系统,用于实时检测单片氧光.
- 为了快速量化光敏感反应中的单片氧动态.
- 为了促进立即反,以优化PDT治疗参数.
主要方法:
- 使用单光子雪崩二极管 (SPAD) 探测器.
- 使用了与时间相关的单光子计数 (TCPSC) 技术.
- 研究了从有机二二二醇光敏剂中单片氧的产生.
主要成果:
- 实现了单片氧发光信号的实时检测.
- 提取单个氧气动态,采集时间短至1秒.
- 证明了该系统用于检测光敏感单片氧的灵敏度.
结论:
- 开发的基于SPAD的系统可以快速实时检测单片氧气.
- 短的获取时间是可行的监测单片氧生产.
- 这项技术有可能通过允许实时调整光剂量以改善治疗结果来增强临床PDT.
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