非侵入性光声学计算中视镜用于纵向大脑成像
Shijie Ruan1, Wei Qin1, Linyang Li1
1Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
Science advances
|February 4, 2026
概括
我们开发了一种新的光声学计算介视镜 (PACMes) 技术,用于小鼠的高分辨率,非侵入性脑成像. 这种方法克服了光学散射和声学衰减,使得长期可视化大脑血管系统.
科学领域:
- 神经成像是一种神经成像.
- 生物医学光学 生物医学光学
- 医学物理 医学物理
背景情况:
- 光声学成像为大脑形态,功能和新陈代谢提供了强大的可视化.
- 大脑中的光学散射和声学衰减限制了当前的光声成像性能.
- 非侵入性,高分辨率,纵向脑成像对于理解大脑功能和疾病至关重要.
研究的目的:
- 开发和验证一种新的光声学计算介视镜 (PACMes) 方法,用于在完整的小鼠大脑中进行非侵入性,高分辨率的脑血管的纵向可视化.
- 为了克服光学散射和声学减弱在深层大脑成像中的局限性.
- 为了使长期监测大脑血管系统的疾病研究.
主要方法:
- 使用了基于线路扫描的光声学计算介视镜 (PACMes) 技术.
- 采用近红外线 (NIR) 线,在多个角度进行扫描,以实现高效的光学激发.
- 集成了一个低频,全环超声波传感器阵列,用于敏感信号检测.
- 应用了一个复合重建算法,将过后投影和光学定位相结合,用于图像恢复.
主要成果:
- 在5个多月的时间里,通过完整的头皮和头骨,实现了对整个小鼠皮质的非侵入性纵向成像.
- 展示了13毫米的视野,空间分辨率为33微米.
- 成功地以高分辨率和灵敏度可视化大脑血管.
结论:
- PACMes方法提供了一个强大的工具,用于对未损坏的小鼠大脑血管结构进行非侵入性,高分辨率和纵向可视化.
- 这项技术解决了当前光声学脑成像技术的关键局限性,为先进的神经科学研究铺平了道路.
- 在体内研究大脑功能,发育和疾病进展方面,PACMes具有显著的潜力.
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