无接触光纤探测器用于拉曼光谱的临床应用
Sean Fitzgerald1,2, Eric Marple3, Jay Werkhaven4
1Vanderbilt Biophotonics Center, Nashville, Tennessee, USA.
Applied spectroscopy
|July 30, 2025
概括
带有微型镜头的新拉曼光谱 (RS) 探针改善了非接触式组织分析. 这种新的设计增强了临床应用的信号强度和空间精度.
科学领域:
- 生物医学光学 生物医学光学
- 频谱学是一种光谱学.
- 医疗器械 医疗器械
背景情况:
- 临床拉曼光谱 (RS) 通常使用光纤探针进行直接组织接触.
- 传统的非接触式RS探头面临着收集效率和空间精度降低的挑战.
- 现有的探头在穿越狭窄的体腔和与医疗仪器集成方面受到限制.
研究的目的:
- 开发一种新型的RS探头,有效地非接触收集指纹 (FP) 和高波数 (HW) 拉曼光谱.
- 在非接触式RS分析中提高空间精度和信号采集效率.
- 评估不同镜片材料对光谱质量的影响,用于体内组织分析.
主要方法:
- 使用随机光传播模拟来预测性能改进.
- 带微型镜头的新型RS探头使用各种材料 (化,石英,蓝宝石,化) 设计和制造.
- 进行了体内组织分析,以比较信号质量和空间选择性与传统探针.
主要成果:
- 新型探测器在非接触式操作期间显示信号强度增加了90%,空间选择性提高了四倍.
- 结晶透镜被发现最好地保护FP和HW区域的组织中的弱拉曼信号.
- 对传统的RS探头进行了性能验证,显示了显著的改进.
结论:
- 开发的无接触式RS探头与微型镜头设计显著提高光谱收集效率和空间精度.
- 在双区域分析中,晶体镜头是保持拉曼信号质量的最佳选择,尽管材料选择取决于特定的光谱需求.
- 该原型采用广场摄像头,为非接触式组织检查提供了临床兼容的解决方案.
相关概念视频
01:26Raman Spectroscopy Instrumentation: Overview
532
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
532
01:20Raman Spectroscopy: Overview
602
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
602