长期非侵入性FTIR检测低剂量电离辐射暴露的长期非侵入性FTIR检测
Jamie L Inman1, Yulun Wu2,3, Liang Chen4
1Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA, 94720, USA.
Scientific reports
|March 14, 2024
概括
福里埃变换红外 (FTIR) 光谱检测小鼠低剂量辐射暴露的非侵入性. 这种方法对在人口规模上快速,无试剂的生物测量学应用有希望.
科学领域:
- 生物物理学的生物物理.
- 频谱学是一种光谱学.
- 辐射生物学 辐射生物学
背景情况:
- 目前用于辐射暴露的生物剂量测量方法可能是侵入性的,缓慢的或缺乏准确性.
- 开发快速,非侵入性和准确的生物测量技术对于管理辐射事件和职业暴露至关重要.
研究的目的:
- 开发和验证使用富里埃变换红外光谱 (FTIR) 检测低剂量电离辐射暴露的非侵入性方法.
- 评估老鼠耳朵皮纳中辐射诱导的光谱变化的时间动态.
主要方法:
- 小鼠接受了各种剂量 (0.1-2 Gy) 的全身辐射.
- 福里埃变换红外光谱法 (FTIR) 用于测量耳尖角层的光谱变化随着时间的推移 (长达90天).
- 机器学习算法被用来根据FTIR光谱特征对辐射暴露进行分类.
主要成果:
- FTIR光谱学证明,在所有测试的辐射剂量和时间点中,在暴露后的90天内,具有显著的区分能力.
- 暴露后14天,分类准确度最高,特异性>0.9,敏感度为0.9.
- 光谱变化表明了DNA构造,脂质氧化和蛋白质二次结构的变化.
结论:
- 在暴露于辐射后,FTIR光谱学提供了一种敏感,非侵入性和无试剂的生物对比方法.
- 开发的管道显示了与人类相关的诊断能力和大规模人口监测的可行性.
- 这种方法在辐射检测和剂量评估方面提供了有希望的进步.
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