Zhang Chi, Zhang Delong, Cheng Ji-Xin
Weldon School of Biomedical Engineering and Department of Chemistry, Purdue University, West Lafayette, Indiana 47907; email:
Annu Rev Biomed Eng. 2015;17:415-45. doi: 10.1146/annurev-bioeng-071114-040554. Epub 2015 Oct 22.
Advancements in coherent Raman scattering (CRS) microscopy have enabled label-free visualization and analysis of functional, endogenous biomolecules in living systems. When compared with spontaneous Raman microscopy, a key advantage of CRS microscopy is the dramatic improvement in imaging speed, which gives rise to real-time vibrational imaging of live biological samples. Using molecular vibrational signatures, recently developed hyperspectral CRS microscopy has improved the readout of chemical information available from CRS images. In this article, we review recent achievements in CRS microscopy, focusing on the theory of the CRS signal-to-noise ratio, imaging speed, technical developments, and applications of CRS imaging in bioscience and clinical settings. In addition, we present possible future directions that the use of this technology may take.
相干拉曼散射(CRS)显微镜技术的进步使得在活体系统中对功能性内源性生物分子进行无标记可视化和分析成为可能。与自发拉曼显微镜相比,CRS显微镜的一个关键优势是成像速度显著提高,从而实现了对活生物样品的实时振动成像。利用分子振动特征,最近开发的高光谱CRS显微镜改进了从CRS图像中获取化学信息的读出。在本文中,我们回顾了CRS显微镜的最新成果,重点关注CRS信噪比理论、成像速度、技术发展以及CRS成像在生物科学和临床环境中的应用。此外,我们还提出了该技术未来可能的发展方向。