一个贝叶斯模型来计算二态发射器的数量在一个衍射有限的斑点
Alexander Hillsley1, Johannes Stein2,3, Paul W Tillberg1
1HHMI Janelia Research Campus, Ashburn, Virginia 20147, United States.
Nano letters
|April 4, 2025
概括
这项研究引入了一种使用可微分隐性马尔科夫模型计数光发射器的新方法,提高了精度,并使显微镜中的可计数范围翻了一番. 该模型还通过分析眼动力学来帮助优化实验条件.
科学领域:
- 生物物理学的生物物理.
- 光学显微镜的使用方法
- 计算生物学 计算生物学
背景情况:
- 在超分辨率显微镜中,精确计数光标记子单元至关重要.
- 目前的方法在射极限以下的独立闪的发射器的重叠信号上扎.
研究的目的:
- 开发一种新的计算模型,从组合的强度信号中准确推断光发射器的数量.
- 改进现有的最先进的方法,在具有挑战性的显微镜场景中计算子单位.
主要方法:
- 一个完全可微分的隐藏马尔科夫模型被开发出来,同时模拟光物理和闪动力学.
- 该模型估计了排放者总数的后向分布.
- 性能与当前最先进的计数技术进行了验证.
主要成果:
- 与现有方法相比,拟议的模型在排放量计数方面表现出更高的准确性.
- 该模型将可计数子单位的范围扩大了两倍.
- 闪动力学被证明显著影响计数能力,为实验设计提供了洞察力.
结论:
- 开发的隐藏马尔科夫模型为显微镜中量化光发射器提供了更强大,更准确的方法.
- 这种方法提高了研究纳米结构的能力,并优化实验参数,以改善成像结果.
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