High dynamic range optical coherence tomography angiography (HDR-OCTA)

Xiang Wei, Tristan T. Hormel, Shaohua Pi, Yukun Guo, Yifan Jian, Yali Jia

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)3560-3571
Number of pages12
JournalBiomedical Optics Express
Issue number7
StatePublished - Jul 2019

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics


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