7 March 2022Decorrelation-based localized transverse flow measurement by digital control of the lateral resolution in line-scan optical coherence tomography
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We demonstrate a novel decorrelation-based localized transverse flow measurement using a line-scan OCT system. We take advantage of the phase stability within each B-scan acquired with a line-scan OCT and digitally generate a low-resolution OCT volume. The ratio of the temporal autocorrelations of the original and low-resolution OCT signals only depends on the system resolution and the flow velocity component along the line-illuminating direction. The ratio is free from the diffusion motion of the flow particles, translation motion orthogonal to the line-illumination direction, and noise-induced distortion. The results from a glass capillary phantom experiment are highly correlated with the digital subaperture Doppler OCT ground truth.
Le Han andKostadinka Bizheva
"Decorrelation-based localized transverse flow measurement by digital control of the lateral resolution in line-scan optical coherence tomography", Proc. SPIE PC11948, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVI, PC1194804 (7 March 2022); https://doi.org/10.1117/12.2610376
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Le Han, Kostadinka Bizheva, "Decorrelation-based localized transverse flow measurement by digital control of the lateral resolution in line-scan optical coherence tomography," Proc. SPIE PC11948, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVI, PC1194804 (7 March 2022); https://doi.org/10.1117/12.2610376