视频速率的两光子微内镜使用第二波共振光纤扫描.
Kai Zhang1,2, Guillaume Ducourthial1, Taresh Sharan1,2,3
1Department of Physics, Northeastern University, Boston, MA 02115, USA.
Biomedical optics express
|November 18, 2024
概括
我们开发了一个紧的,手持式的两光子微内镜,能够以视频速率成像. 这种先进的纤维扫描技术最大限度地减少了运动工件,以清晰地可视化组织.
科学领域:
- 生物医学光学 生物医学光学
- 显微镜工程 显微镜工程
- 医学成像技术 医学成像技术
背景情况:
- 传统的微内镜经常受到运动器件的影响,限制了实时体内成像.
- 现有的纤维扫描技术在率上有局限性,阻碍了动态组织观察.
研究的目的:
- 开发一种高率,手持式两光子微内镜,用于无人工物组织成像.
- 增强光纤扫描方法,以提高成像速度而不会影响分辨率.
主要方法:
- 设计了一种2.5毫米共振纤维扫描的两光子微内镜,配有一个30毫米刚性探针.
- 为了实现视频速率成像 (20 Hz),实施了更高阶波扫描技术.
- 用3D打印的支架来实现光纤扫描仪的经济高效和稳定制造.
主要成果:
- 微内镜实现了20 Hz的率,比以前的设计快得多.
- 保持视野 (~125微米) 和光学分辨率 (1.2微米横向,10.9微米轴向).
- 证明了高稳定性 (在84小时内漂移<0.3微米) 与具有成本效益的3D打印组件.
结论:
- 开发的微内镜能够实时,手持成像组织的减少运动文物.
- 这项技术使多光子微内镜在体内应用中取得了进展.
- 使用更高阶波扫描和3D打印为高性能微内镜提供了实用解决方案.
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