使用偏振增强的光声学来感知奇拉分子的深层组织
Swathi Padmanabhan1, Jaya Prakash1
1Department of Instrumentation and Applied Physics, Indian Institute of Science, Bengaluru 560012, India.
Science advances
|March 19, 2025
概括
光声极化增强的光学旋转传感器 (PAPEORS) 能够检测到3.5毫米的深层组织性分子. 这种新的方法克服了光散射的局限性,提高了体内传感能力.
科学领域:
- 生物光子学 生物光子学
- 化学传感器 化学传感器
- 医学诊断 医学诊断 医学诊断
背景情况:
- 状分子传感对于各种应用至关重要,包括诊断和药物开发.
- 传统的方法,如极度测量,由于光散射,仅限于浅深 (1毫米).
- 近红外II (NIR-II) 窗口为光学传感提供更深的组织透.
研究的目的:
- 开发一种新的光声学传感技术,用于深层组织性分子检测.
- 为了克服现有的状传感方法的深度限制.
- 为了建立光声信号和深处的性分子度之间的相关性.
主要方法:
- 开发了一种光声极化增强光学旋转传感 (PAPEORS) 系统.
- 使用近红外II (NIR-II) 窗口进行增强的组织透.
- 从光声信号测量光学旋转,以量化奇拉分子.
- 使用葡萄糖溶液,纳普洛森,血清样本和ex vivo肉组织进行验证.
主要成果:
- 在生物组织中,PAPEORS系统实现了高达3.5毫米深度的奇拉感应.
- 在血清样本中,葡萄糖的检测极限为80 mg/dl.
- 成功地将光声信号与奇拉分子度相关联.
- 展示了体内应用和系统小型化的潜力.
结论:
- 在NIR-II窗口中的光声学传感是一种可行的方法,用于深层组织性分子检测.
- 在现有的浅深探测技术上,PAPEORS提供了显著的进步.
- 开发的系统显示了对非侵入性 in vivo 性感应和诊断的前景.
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