High dynamic range blood flow evaluation in the retina with spectrally extended line field OCTA

Si Chen; Chen Hsin Sun; Xin Ge; Xi Chen; Shiliang Lou; Kan Lin; Yukun Wang; Linbo Liu

doi:10.1117/12.2649617

17 March 2023 High dynamic range blood flow evaluation in the retina with spectrally extended line field OCTA

Si Chen, Chen Hsin Sun, Xin Ge, Xi Chen, Shiliang Lou, Kan Lin, Yukun Wang, Linbo Liu

Proceedings Volume PC12360, Ophthalmic Technologies XXXIII; PC1236004 (2023) https://doi.org/10.1117/12.2649617
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

We have developed a novel scanning protocol based on Spectrally Extended Line Field OCTA (SELF-OCTA) to realize 4 interscan times ranging from 0.54 ms to 5.4 ms without increasing A-scan repetitions at the same position. Based on the linear model, we further developed signal processing methods to realize high dynamic range blood flow map by concatenating the dynamic range of 3 interscan time: 0.54 ms, 1.35 ms and 2.70 ms. The differential OCTA signals provided by different interscan times help with flow dynamic range extension and blood flow evaluation.

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Citation Download Citation

Si Chen, Chen Hsin Sun, Xin Ge, Xi Chen, Shiliang Lou, Kan Lin, Yukun Wang, and Linbo Liu "High dynamic range blood flow evaluation in the retina with spectrally extended line field OCTA", Proc. SPIE PC12360, Ophthalmic Technologies XXXIII, PC1236004 (17 March 2023); https://doi.org/10.1117/12.2649617

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KEYWORDS

Blood circulation

High dynamic range imaging

Retina

Angiography

Functional imaging

Optical coherence tomography

Pathology

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