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Eye-motion-corrected optical coherence tomography angiography using Lissajous scanning

By Chen Yiwei, Hong Young-Joo, Makita Shuichi, Yasuno Yoshiaki, 巻田 修一 and 安野 嘉晃

Abstract

To correct eye motion artifacts in en face optical coherence tomography angiography (OCT-A) images, a Lissajous scanning method with subsequent software-based motion correction is proposed. The standard Lissajous scanning pattern is modified to be compatible with OCT-A and a corresponding motion correction algorithm is designed. The effectiveness of our method was demonstrated by comparing en face OCT-A images with and without motion correction. The method was further validated by comparing motion-corrected images with scanning laser ophthalmoscopy images, and the repeatability of the method was evaluated using a checkerboard image. A motion-corrected en face OCT-A image from a blinking case is presented to demonstrate the ability of the method to deal with eye blinking. Results show that the method can produce accurate motion-free en face OCT-A images of the posterior segment of the eye in vivo

Publisher: 'The Optical Society'
Year: 2018
DOI identifier: 10.1364/BOE.9.001111
OAI identifier: oai:tsukuba.repo.nii.ac.jp:00046487
Provided by: Tsukuba Repository
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