通过光纤捆束进行多次曝光斑点成像
Logan Parker1, Shaun A Englemann1, Alankrit Tomar1
1The University of Texas at Austin, Department of Biomedical Engineering, Austin, Texas, United States.
Journal of biomedical optics
|October 27, 2025
概括
多次曝光斑点成像 (MESI) 现在可以通过光纤捆进行,使在具有挑战性的环境中进行血液流量测量. 这种技术的准确性与传统的自由空间MESI相美,扩大了其临床应用.
科学领域:
- 生物医学光学 生物医学光学
- 医学成像医学成像
- 血液动力学 血液动力学
背景情况:
- 多次曝光光斑成像 (MESI) 是一种无标签的光学技术,用于可视化和量化血液流动.
- 精确的输液测量对于手术指导,治疗监测和疾病诊断至关重要.
研究的目的:
- 为了证明使用光纤捆绑用于MESI的可行性.
- 与自由空间MESI相比,评估光纤捆绑MESI的准确性.
- 探索在内镜或狭窄空间等领域的应用.
主要方法:
- 从流幻影和*in vivo*小鼠皮层同时获取MESI数据,使用自由空间和光纤捆绑设置.
- 使用皮尔森相关系数 (R2) 进行测量的比较.
主要成果:
- 纤维捆绑和自由空间MESI之间的高相关性 (R2>0.99) 在广泛的流速 (1-100μL/分钟) 的流量幻象中.
- 对于在小鼠皮质血管和脑膜中*in vivo*的测量有强烈的共识 (R2=0.970).
- 在中风建模过程中观察到的显著相关性 (R2 > 0.90).
结论:
- 纤维捆 MESI 是一种可行且准确的血液流量测量方法.
- 这种技术的性能与自由空间MESI相提并论.
- 它扩大了MESI的潜在应用,特别是在微创手术和具有挑战性的解剖位置.
相关概念视频
Confocal Fluorescence Microscopy
20.0K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
20.0K
Imaging Biological Samples with Optical Microscopy
8.8K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
8.8K
Super-resolution Fluorescence Microscopy
12.2K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
12.2K


