Effective bidirectional scanning pattern for optical coherence tomography angiography

Biomedical Optics Express
Myeong Jin JuYifan Jian

Abstract

We demonstrate the utility of a novel scanning method for optical coherence tomography angiography (OCTA). Although raster scanning is commonly used for OCTA imaging, a bidirectional approach would lessen the distortion caused by galvanometer-based scanners as sources continue to increase sweep rates. As shown, a unidirectional raster scan approach has a lower effective scanning time than bidirectional approaches; however, a strictly bidirectional approach causes contrast variation along the B-scan direction due to the non-uniform time interval between B-scans. Therefore, a stepped bidirectional approach is introduced and successfully applied to retinal imaging in normal controls and in a pathological subject with diabetic retinopathy.

References

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Citations

Mar 27, 2019·Therapeutic Advances in Ophthalmology·Petteri TeikariDan Milea
Oct 6, 2020·Biomedical Optics Express·Acner CaminoYifan Jian
Aug 28, 2019·Biomedical Optics Express·Qi FangBrendan F Kennedy
Dec 20, 2019·Biomedical Optics Express·Xiang WeiYali Jia
Jul 31, 2019·Biomedical Optics Express·Xiang WeiYali Jia
Jun 6, 2020·Biomedical Optics Express·Chaoliang ChenVictor X D Yang
Feb 2, 2021·Translational Vision Science & Technology·Paula K YuDao-Yi Yu
Jul 6, 2021·Biomedical Optics Express·Shuibin NiYifan Jian

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