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大FOV 3D定位显微镜通过空间变异的点扩散函数生成
Dafei Xiao1, Reut Kedem Orange1, Nadav Opatovski1
1Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel.
Science advances
|March 8, 2024
概括
我们开发了PPG3D,这是一种快速而准确的方法,用于在局部化显微镜 (LM) 中表征微观点扩散函数 (PSF). 这种技术可以在较大的视野 (FOV) 上改善超高分辨率成像.
科学领域:
- 光学显微镜是一种光学显微镜.
- 超高分辨率成像成像技术
- 生物物理学的生物物理.
背景情况:
- 精确的点扩散函数 (PSF) 描述对于高性能局部化显微镜 (LM) 非常重要.
- 传统的LM通常假定空间不变的PSF,这限制了大视野 (FOV) 成像中的性能.
- 对空间变异的PSF进行核算对于先进的LM应用来说至关重要.
研究的目的:
- 引入基于主要组件分析的准确和快速的现场依赖的3D PSF生成器和定位器 (PPG3D).
- 为了使3D单分子定位显微镜 (SMLM) 在大型FOV上实现高准确度超分辨率成像.
主要方法:
- 开发PPG3D,这是一种使用主要组件分析来生成PSF的新算法.
- 通过模拟和实验3D SMLM成像进行验证.
- 与现有的变速PSF发电机进行比较.
主要成果:
- PPG3D在细胞结构 (线粒体,微管) 的超高分辨率成像中表现出有效性,在大型FOV上具有高保真度.
- 与标准变速变量PSF发电机相比,精度提高了三倍.
- 在基于图像平面的插值模式下,PPG3D的速度大约是现有的PSF生成器的100倍.
结论:
- 在3D SMLM中,PPG3D为处理空间变异的PSF提供了准确和高效的解决方案.
- PPG3D的用户友好性和速度表明它在SMLM和其他成像模式中具有广泛的适用性.
- 这种方法增强了局部化显微镜用于大规模生物成像的能力.
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