Hot Paper - Confocal laser speckle autocorrelation imaging of dynamic flow in microvasculature

Confocal laser speckle autocorrelation imaging of dynamic flow in microvasculature

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Конфокальная лазерная спекл-автокорреляционная визуализация динамического потока в микроциркуляторном русле

E Du 杜娥, Shuhao Shen, Anqi Qiu 仇安琪, Nanguang Chen 陈南光

Department of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore

https://doi.org/10.29026/oea.2022.210045

https://www.oejournal.org/article/doi/10.29026/oea.2022.210045

Opto-Electronic Advances, 28 February 2022

Abstract

Laser speckle imaging has been widely used for in-vivo visualization of blood perfusion in biological tissues. However, existing laser speckle imaging techniques suffer from limited quantification accuracy and spatial resolution. Here we report a novel design and implementation of a powerful laser speckle imaging platform to solve the two critical limitations.

The core technique of our platform is a combination of line scan confocal microscopy with laser speckle autocorrelation imaging, which is termed Line Scan Laser Speckle Autocorrelation Imaging (LS-LSAI). The technical advantages of LS-LSAI include high spatial resolution (~4.4 μm) for visualizing and quantifying blood flow in microvessels, as well as video-rate imaging speed for tracing dynamic flow.

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