19 March 2015 Scan-pattern and signal processing for microvasculature visualization with complex SD-OCT: tissue-motion artifacts robustness and decorrelation time - blood vessel characteristics
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Abstract
We propose a modification of OCT scanning pattern and corresponding signal processing for 3D visualizing blood microcirculation from complex-signal B-scans. We describe the scanning pattern modifications that increase the methods’ robustness to bulk tissue motion artifacts, with speed up to several cm/s. Based on these modifications, OCT-based angiography becomes more realistic under practical measurement conditions. For these scan patterns, we apply novel signal processing to separate the blood vessels with different decorrelation times, by varying of effective temporal diversity of processed signals.
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Lev A. Matveev, Vladimir Y. Zaitsev, Grigory V. Gelikonov, Alexandr L. Matveyev, Alexander A. Moiseev, Sergey Yu. Ksenofontov, Valentin M. Gelikonov, Valentin Demidov, Alex Vitkin, "Scan-pattern and signal processing for microvasculature visualization with complex SD-OCT: tissue-motion artifacts robustness and decorrelation time - blood vessel characteristics", Proc. SPIE 9448, Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics, 94481M (19 March 2015); doi: 10.1117/12.2179246; https://doi.org/10.1117/12.2179246
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