Extended axial imaging range, widefield swept source optical coherence tomography angiography

Gangjun Liu, Jianlong Yang, Jie Wang, Yan Li, Pengxiao Zang, Jia Yali, David Huang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We developed a high-speed, swept source OCT system for widefield OCT angiography (OCTA) imaging. The system has an extended axial imaging range of 6.6mm. An electrical lens is used for fast, automatic focusing. The recently developed split-spectrum amplitude and phase-gradient angiography allow high-resolution OCTA imaging with only two B-scan repetitions. An improved post-processing algorithm effectively removed trigger jitter artifacts and reduced noise in the flow signal. We demonstrated high contrast 3mm×3mm OCTA image with 400×400 pixels acquired in 3seconds and high-definition 8mm×6mm and 12mm×6mm OCTA images with 850×400 pixels obtained in 4seconds. A widefield 8mm×11mm OCTA image is produced by montaging two 8mm×6mm scans. An ultra-widefield (with a maximum of 22mm along both vertical and horizontal directions) capillary-resolution OCTA image is obtained by montaging six 12mm×6mm scans.

Original languageEnglish (US)
JournalJournal of Biophotonics
DOIs
StateAccepted/In press - 2017

Fingerprint

Angiography
angiography
Optical tomography
Optical Coherence Tomography
tomography
Imaging techniques
Pixels
pixels
Jitter
Artifacts
Lenses
Noise
artifacts
repetition
actuators
lenses
high speed
vibration
gradients
high resolution

Keywords

  • Optical coherence tomography
  • Optical coherence tomography angiography
  • Widefield imaging.

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Extended axial imaging range, widefield swept source optical coherence tomography angiography. / Liu, Gangjun; Yang, Jianlong; Wang, Jie; Li, Yan; Zang, Pengxiao; Yali, Jia; Huang, David.

In: Journal of Biophotonics, 2017.

Research output: Contribution to journalArticle

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AU - Huang, David

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