Cross-scanning optical coherence tomography angiography for eye motion correction

Hyung Jin Kim, Byeong Joo Song, Youngwoon Choi, Beop Min Kim

Research output: Contribution to journalArticle

Abstract

We propose a cross-scanning optical coherence tomography (CS-OCT) system to correct eye motion artifacts in OCT angiography images. This system employs a dual-illumination configuration with two orthogonally polarized beams, each of which simultaneously perform raster scanning in perpendicular direction with each other over the same area. In the reference arm, a polarization delay unit is used to acquire the two orthogonally polarized interferograms with a single photo detector by introducing different optical delay lines. The two cross-scanned volume data are affected by the same eye motion but in two orthogonal directions. We developed a motion correction algorithm, which removes artifacts in the slow axis of each angiogram using the other and merges them through a nonrigid registration algorithm. In this manner, we obtained a motion-corrected angiogram within a single volume scanning time without additional eye-tracking devices.

Original languageEnglish
Article numbere202000170
JournalJournal of Biophotonics
Volume13
Issue number9
DOIs
Publication statusPublished - 2020 Sep 1

Keywords

  • motion correction
  • motion-corrected angiogram
  • optical coherence tomography
  • optical coherence tomography angiography

ASJC Scopus subject areas

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

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