Abstract
We propose an innovative registration method to correct motion artifacts for wide-field optical coherence tomography angiography (OCTA) acquired by ultrahigh-speed swept-source OCT (>200 kHz A-scan rate). Considering that the number of A-scans along the fast axis is much higher than the number of positions along slow axis in the wide-field OCTA scan, a non-orthogonal scheme is introduced. Two en face angiograms in the vertical priority (2 y-fast) are divided into microsaccade-free parallel strips. A gross registration based on large vessels and a fine registration based on small vessels are sequentially applied to register parallel strips into a composite image. This technique is extended to automatically montage individual registered, motion-free angiograms into an ultrawide-field view.
Original language | English (US) |
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Article number | 263573 |
Pages (from-to) | 2823-2836 |
Number of pages | 14 |
Journal | Biomedical Optics Express |
Volume | 7 |
Issue number | 7 |
DOIs | |
State | Published - Jul 1 2016 |
ASJC Scopus subject areas
- Biotechnology
- Atomic and Molecular Physics, and Optics