Effective scanning protocol for optical coherence tomography and angiography using a 1.6 MHz Fourier domain mode-locked laser source

Destiny Hsu; Ji Hoon Kwon; Arman Athwal; Yusi Miao; Yifan Jian; Marinko V. Sarunic; Myeong Jin Ju

doi:10.1117/12.2578207

5 March 2021 Effective scanning protocol for optical coherence tomography and angiography using a 1.6 MHz Fourier domain mode-locked laser source

Destiny Hsu, Ji Hoon Kwon, Arman Athwal, Yusi Miao, Yifan Jian, Marinko V. Sarunic, Myeong Jin Ju

Author Affiliations +

Proceedings Volume 11630, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV; 116301L (2021) https://doi.org/10.1117/12.2578207
Event: SPIE BiOS, 2021, Online Only

Abstract

Fourier-domain mode-locked (FDML) laser sources allow OCT imaging systems with sweep rates reaching 1.6 MHz. However, physical limitations of conventional scanning systems require consideration. Resonant scanners fix imaging frequency, whereas galvanometer scanner (GS) systems require either raster scanning with large flyback that reduce usable data, or bi-directional scans that require many repeated scans. To overcome these limitations, we employed an effective 1.6 MHz stepped bi-directional scanning protocol, allowing 2 BM-scan OCT-angiography (OCTA) imaging using high-speed FDML. We present the ideal acquisition protocol and processing algorithm for optimum OCTA quality, with results demonstrating high vasculature contrast at 1.6 MHz scan rates.

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Destiny Hsu, Ji Hoon Kwon, Arman Athwal, Yusi Miao, Yifan Jian, Marinko V. Sarunic, and Myeong Jin Ju "Effective scanning protocol for optical coherence tomography and angiography using a 1.6 MHz Fourier domain mode-locked laser source", Proc. SPIE 11630, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV, 116301L (5 March 2021); https://doi.org/10.1117/12.2578207

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