双向定量散射显微镜的使用
Kohki Horie1, Keiichiro Toda2, Takuma Nakamura2
1Department of Physics, The University of Tokyo, Tokyo, Japan.
Nature communications
|November 14, 2025
概括
双向定量散射显微镜 (BiQSM) 结合了前向和后向散射,用于无标签的成像. 这种新技术同时可视化纳米和微观细胞结构,克服了先前方法的局限性.
科学领域:
- 生物医学成像学 生物医学成像学
- 细胞动态 细胞动态
- 定量阶段显微镜的定量阶段显微镜.
背景情况:
- 定量相显微镜 (QPM) 和干涉计散射显微镜 (iSCAT) 是无标签的技术,具有互补的优缺点.
- QPM在微尺度成像方面表现出色,但在纳米尺度动态方面却处于困境.
- iSCAT对纳米级动态敏感,但在微观成像方面受到限制.
研究的目的:
- 开发一种新的成像技术,将QPM和iSCAT的功能整合起来.
- 为了使纳米和微尺度细胞组件的同时高分辨率成像.
- 推进动态生物过程的无标签监测.
主要方法:
- 引入双向定量散射显微镜 (BiQSM).
- 集成前向散射 (FS) 和后向散射 (BS) 检测.
- 使用双向照明和空间频率多重复合的离轴数字全息.
主要成果:
- BiQSM实现了时空一致性和比QPM宽14倍的动态范围.
- 能够同时对纳米和微尺度细胞结构进行成像.
- 展示了细胞内结构,小颗粒和细胞重要状态的可视化.
结论:
- BiQSM成功地弥合了QPM和iSCAT之间的差距,提供了增强的定量细胞成像.
- 该技术允许在多个尺度上对细胞组件进行全面的时空分析.
- 在研究动态生物过程和细胞健康监测方面,BiQSM具有重大潜力.
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