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Opt Express. 2012 Jan 30;20(3):2740-60. doi: 10.1364/OE.20.002740.

High-penetration swept source Doppler optical coherence angiography by fully numerical phase stabilization.

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  • 1Computational Optics Group, University of Tsukuba, Tsukuba, Ibaraki, Japan.


A high-penetration swept-source optical coherence tomography (HP-SS-OCT) system based on a 1-μm short cavity laser is developed. Doppler OCT processing is applied, along with a custom-made numerical phase stabilization algorithm; this process does not require additional calibration hardware. Thus, our phase stabilization method is simple and can be employed in a variety of SS-OCT systems. The bidirectional blood flow and vasculature in the deep choroid was successfully imaged via two Doppler modes that use different time intervals for Doppler processing. En face projection image of squared power of Doppler shift is compared to ICGA, and the utility of our method is verified.

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