深度体积超高分辨率成像在厚厚的生物标本与稀疏扫描SIM扫描
Sha An1,2,3, Xuhong Guo1,2,3, Zhongxia Cai1,2,3
1School of Physics, Xidian University, Xi'an, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 23, 2026
概括
稀疏扫描SIM (SS-SIM) 能够在厚厚的生物样本中进行深度超分辨率成像. 这种先进的显微镜技术克服了分散的限制,使密集组织和生物体的体积可视化更加清晰.
科学领域:
- 生物光子学和先进的显微镜技术.
- 开发用于生物研究的新型成像模式.
背景情况:
- 高分辨率光显微镜在深厚的样本中面临挑战,原因是光散射和有限的透率.
- 结构化照明显微镜 (SIM) 提供超高分辨率,但对散射敏感,阻碍了体积成像.
- 现有的方法在复杂的生物环境中难以进行深度成像.
研究的目的:
- 开发一种超高分辨率显微镜技术,用于在厚厚的活体样本中进行深度成像.
- 克服传统SIM在易散的生物样本中的局限性.
- 为了实现高对比度,密集的生物结构的体积可视化.
主要方法:
- 引入稀疏扫描SIM (SS-SIM),集成快速激光扫描与像素定位强度调制和sCMOS检测.
- 利用单光子或双光子激发来实现多功能深度成像应用.
- 实施浸水目标,以达到高达300/600微米的成像深度.
主要成果:
- SS-SIM实现了大约150nm的空间分辨率.
- 在成像深度内的广场显微镜上保持了1.6/1.7倍 (侧向/轴向) 的分辨率增强.
- 成功实现了密集生物样本的体积可视化,包括厚组织,有机体和小生物.
结论:
- SS-SIM提供了一种强大而简单的方法,用于深度超分辨率成像.
- 这种技术显著扩大了SIM对具有挑战性的生物样本的适用性.
- 在复杂的生物环境中,SS-SIM提供了用于高对比度体积成像的实用解决方案.
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