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斑点变异光声学显微镜用于微血动力学成像
Wei Song1, Yiyan Zhuang1, Yifan Yang1
1Nanophotonics Research Center, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China.
ACS sensors
|April 16, 2024
概括
斑点变异光声学显微镜 (SV-PAM) 提供无标签的,高分辨率的3D微血管动力学成像. 这项技术可以实时可视化血液流动和 perfusion,有助于研究诸如中风等疾病.
科学领域:
- 生物医学光学 生物医学光学
- 医疗成像医学成像
- 微循环研究 微循环研究
背景情况:
- 光声学显微镜 (PAM) 使用血红蛋白的光学吸收用于无标签的微血管成像.
- 现有的PAM方法提供了形态和功能数据,但在动态血液动力学评估中可能受到限制.
研究的目的:
- 引入光斑变异光声学显微镜 (SV-PAM),用于高分辨率的3Din vivo血液动力学成像.
- 为了利用来自移动红细胞的内在对比度,以增强微血管可视化.
主要方法:
- 在相同的横向位置获得连续的光声学B扫描.
- 从这些框架中计算斑点变异,以识别血液 perfusion 和 occlusion.
- 在体内成像微血管封闭和反在小鼠耳朵.
主要成果:
- SV-PAM成功地恢复了具有毛细血管级分辨率的3D血液动力图像.
- 血 perfusion 和 occlusion 的准确识别得到了实现,揭示了动态血流.
- 高分辨率的血液动力学成像显示了血管封闭和再输动力学.
结论:
- SV-PAM为微血管的无标签,高分辨率的3D血液动力学成像提供了内在的对比.
- 该技术可以可视化动态血液流动, perfusion 和 occlusion.
- SV-PAM显示了生物医学血液动力学研究的巨大潜力,包括中风成像.
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