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.
Original language | English (US) |
---|---|
Article number | #323355 |
Pages (from-to) | 2336-2350 |
Number of pages | 15 |
Journal | Biomedical Optics Express |
Volume | 9 |
Issue number | 5 |
DOIs | |
State | Published - May 1 2018 |
Externally published | Yes |
Keywords
- Ophthalmic optics and devices
- Ophthalmology
- Optical coherence tomography
ASJC Scopus subject areas
- Biotechnology
- Atomic and Molecular Physics, and Optics