通过散射介质将高分辨率成像集成到一次性微内镜中,通过投射二维斑点阵列
Shimon Elkabetz1,2, Oran Herman2, Amihai Meiri2
1Faculty of Engineering, Bar Ilan University, 5290002, Ramat Gan, Israel.
Scientific reports
|November 13, 2023
概括
这项研究引入了一种新的微内镜,用于通过血液等散射介质进行高分辨率成像. 它使用可调节的激光阵列和全息检测来增强医疗内镜程序.
科学领域:
- 生物医学光学 生物医学光学
- 医学成像技术 医学成像技术
背景情况:
- 通过散射介质 (如血液) 进行成像,在医学内镜中提出了重大挑战.
- 现有的内镜技术往往缺乏详细地表可视化所需的分辨率.
研究的目的:
- 开发一种用于一次性微内镜的高分辨率成像技术,能够穿透分散的生物组织.
- 集成可调节的激光照明系统和全息检测以实现高级可视化.
主要方法:
- 在微内镜的照明通道内使用光纤激光来投射可调节的光点.
- 将时间激光调制转换为空间光分布,用于点阵列生成.
- 采用反射光的全息记录来提取电场并重建图像.
- 应用本地化显微镜算法与扫描点阵列用于高分辨率成像.
主要成果:
- 演示了在散射介质背后生成和控制一个空间阵列的照明点的原理.
- 成功重建了位于散射介质后面的物体的高分辨率图像.
- 通过理论分析和实验证据验证了提出的概念.
结论:
- 开发的微内镜系统为医疗内镜手术中的高分辨率成像提供了一个有前途的方法.
- 可调节激光照明和全息检测的整合克服了通过分散组织成像的局限性.
- 这项技术有可能在各种内镜应用中显著提高诊断能力.
相关概念视频
01:22Overview of Microscopy Techniques
10.4K
The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
10.4K
01:37Super-resolution Fluorescence Microscopy
7.0K
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...
7.0K