用于血管生物成像的近红外二区光学成像。

Optical Imaging in the Second Near Infrared Window for Vascular Bioimaging.

机构信息

State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, 999078, China.

Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100000, China.

出版信息

Small. 2021 Oct;17(43):e2103780. doi: 10.1002/smll.202103780. Epub 2021 Oct 13.

Abstract

Optical imaging in the second near infrared region (NIR-II, 1000-1700 nm) provides higher resolution and deeper penetration depth for accurate and real-time vascular anatomy, blood dynamics, and function information, effectively contributing to the early diagnosis and curative effect assessment of vascular anomalies. Currently, NIR-II optical imaging demonstrates encouraging results including long-term monitoring of vascular injury and regeneration, real-time feedback of blood perfusion, tracking of lymphatic metastases, and imaging-guided surgery. This review summarizes the latest progresses of NIR-II optical imaging for angiography including fluorescence imaging, photoacoustic (PA) imaging, and optical coherence tomography (OCT). The development of current NIR-II fluorescence, PA, and OCT probes (i.e., single-walled carbon nanotubes, quantum dots, rare earth doped nanoparticles, noble metal-based nanostructures, organic dye-based probes, and semiconductor polymer nanoparticles), highlighting probe optimization regarding high brightness, longwave emission, and biocompatibility through chemical modification or nanotechnology, is first introduced. The application of NIR-II probes in angiography based on the classification of peripheral vascular, cerebrovascular, tumor vessel, and cardiovascular, is then reviewed. Major challenges and opportunities in the NIR-II optical imaging for vascular imaging are finally discussed.

摘要

近红外二区(NIR-II,1000-1700nm)的光学成像是一种精准、实时的血管解剖、血流动力学和功能信息的获取手段,它具有更高的分辨率和更深的穿透深度,能够有效促进血管异常的早期诊断和疗效评估。目前,NIR-II 光学成像在血管损伤和再生的长期监测、血流灌注的实时反馈、淋巴转移的跟踪以及成像引导手术等方面已经取得了令人鼓舞的成果。本文综述了 NIR-II 光学成像在血管造影中的最新进展,包括荧光成像、光声(PA)成像和光相干断层扫描(OCT)。首先介绍了当前 NIR-II 荧光、PA 和 OCT 探针(如单壁碳纳米管、量子点、稀土掺杂纳米颗粒、基于贵金属的纳米结构、基于有机染料的探针和半导体聚合物纳米颗粒)的发展,强调了通过化学修饰或纳米技术实现高亮度、长波发射和生物相容性的探针优化。然后,根据外周血管、脑血管、肿瘤血管和心血管的分类,综述了 NIR-II 探针在血管造影中的应用。最后,讨论了 NIR-II 光学血管成像的主要挑战和机遇。

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