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Proceedings Paper

Motion-free optical coherence tomography imaging of retinal disease using Lissajous scanning pattern
Author(s): Shuichi Makita; Masahiro Miura; Toshihiro Mino; Shinnosuke Azuma; Tatsuo Yamaguchi; Yoshiaki Yasuno
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Paper Abstract

Optical coherence tomography (OCT) reveals the depth-resolved structure of the posterior eye non-invasively. However, artifacts caused by involuntary eye movement is one of the largest problems. Recently, we have demonstrated a motionartifact- free, high-resolution imaging technique based on Lissajous scanning pattern and advanced motion correction algorithm. Although this method works to a certain degree, the residual artifacts are still problematic for clinical applications.

In this study, we demonstrate the improvement of motion correction for en-face OCT imaging. The OCT signals are acquired with a Lissajous scanning pattern which has been modified from a standard Lissajous scan to enable OCT angiography (OCT-A) imaging. The lateral motion is estimated from several en-face images of OCT and OCT-A by using a motion estimation algorithm. Some diseased eyes exhibit abnormal patterns in OCT en-face images. Simultaneously using these images will enhance the motion estimation and will improve the motion correction at these abnormal regions. Motion-free imaging for retinal diseases is demonstrated.

Paper Details

Date Published: 19 February 2020
PDF: 5 pages
Proc. SPIE 11218, Ophthalmic Technologies XXX, 1121804 (19 February 2020); doi: 10.1117/12.2545691
Show Author Affiliations
Shuichi Makita, Univ. of Tsukuba (Japan)
Masahiro Miura, Ibaraki Medical Ctr., Tokyo Medical Univ. (Japan)
Toshihiro Mino, Topcon Corp. (Japan)
Shinnosuke Azuma, Univ. of Tsukuba (Japan)
Topcon Corp. (Japan)
Tatsuo Yamaguchi, Topcon Corp. (Japan)
Yoshiaki Yasuno, Univ. of Tsukuba (Japan)

Published in SPIE Proceedings Vol. 11218:
Ophthalmic Technologies XXX
Fabrice Manns; Arthur Ho; Per G. Söderberg, Editor(s)

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