Open AccessHigh dynamic range optical coherence tomography angiography (HDR-OCTA)
Author(s) -
Xiang Wei,
Tristan T. Hormel,
Shaohua Pi,
Yukun Guo,
Yifan Jian,
Yali Jia
Publication year - 2019
Publication title -
biomedical optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.10.003560
Subject(s) - optical coherence tomography , optical coherence tomography angiography , high dynamic range , optics , angiography , diffuse optical imaging , dynamic range , tomography , computer science , radiology , medical physics , medicine , physics
The dynamic range of current optical coherence tomography (OCT) angiography (OCTA) images is limited by the fixed scanning intervals. High speed OCT devices introduce the possibility of extending the flow signal dynamic range. In this study, we created a novel scanning pattern for achieving high dynamic range (HDR)-OCTA with a superior scanning efficiency. We implemented a bidirectional, interleaved scanning pattern that is sensitive to different flow speeds by adjustable adjacent inter-scan time intervals. We found that an improved flow dynamic range can be achieved by generating 3 different B-scan time intervals using 3 repetitions.