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吸收分子作为光学清除剂提高光声显微镜的分辨率和灵敏度

Tianxiang Zuo, Chao Tao, Xiaojun Liu

|April 1, 2025

概括

食品颜料塔特拉可以增强光声显微镜 (PAM) 的成像效果. 这项研究表明,tartrazine可以提高分辨率和强度,使微血管在体内更深入,更清晰地可视化.

科学领域:

生物医学光学生物医学光学
医疗成像医学成像
摄影声学显微镜的使用

背景情况:

光声显微镜 (PAM) 提供了高分辨率和灵敏度,但受到组织中光散射的限制.
现有的光学清除剂 (OCAs) 往往涉及有毒物质或组织损伤,限制其在体内使用.
食品颜料塔特拉显示出具有良好的生物安全性的光学清除潜力,但其适用于PAM的适用性尚不清楚.

研究的目的:

为了研究tartrazine作为光学清除剂的效果,用于光声显微镜.
为了确定tartrazine是否可以增强PAM成像深度,分辨率和强度.
评估在体内PAM成像中使用tartrazine的可行性.

主要方法:

实验使用不同度的tartrazine溶液进行.
活体组织样本使用PAM与或没有tartrazine进行成像.
在未损坏头皮和头骨的小鼠体内脑部成像使用PAM与tartrazine进行.

主要成果:

青素溶液显著改善了PAM性能,提高了分辨率和成像强度.
活体实验显示3.5倍的分辨率改善和4.5倍的强度增加与0.6Mtartrazine.
在体内成像显示强度增加约4倍,并通过完整的头皮和头骨可视化大脑微血管结构.

结论:

尽管青素具有吸收特性,但在适当的度下,它有效地提高了PAM的性能.
塔特拉可以进行更深,更高分辨率的PAM成像,克服散射限制.
这项研究验证了tartrazine作为一种安全有效的药物,可以改善生物组织的体内PAM成像.

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