In the imaging of airway tissue, optical coherence tomography (OCT) provides cross-sectional images of tissue structures, shows cilia movement and mucus secretion, but does not provide sufficient contrast to differentiate individual cells. By using fast sequences of microscopic resolution OCT (mOCT) images, OCT can use small signal fluctuations to overcome lack in contrast and speckle noise. In this way, OCT visualizes airway morphology on a cellular level and allows the tracking of the dynamic behavior of immune cells, as well as mucus transport and secretion. Here, we demonstrate that mOCT, by using temporal tissue fluctuation as contrast (dynamic mOCT), provides the possibility to study physiological and pathological tissue processes in vivo.

Dynamic microscopic optical coherence tomography to visualize the morphological and functional micro-anatomy of the airways.

Micro-optical coherence tomography ({micro}OCT) improves the spatial resolution of in vivo OCT imaging by utilizing sophisticated focusing schemes and broadband illumination. This study explores the safety of coronary and trachea tissue exposure to {micro}OCT illumination. (C) 2021 The Authors

https://biorxiv.org/content/10.1101/2021.08.12.455289v1.full.pdf

Safety Assessment of Broadband Laser Exposure in μOCT

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Safety Assessment of Broadband Laser Exposure in μOCT