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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
Published on: August 4, 2018
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Eye-motion-corrected optical coherence tomography angiography using Lissajous scanning.
Yiwei Chen1,2, Young-Joo Hong1,2, Shuichi Makita1,2
1Computational Optics Group, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.
Biomedical Optics Express
|March 16, 2018
Summary
A new Lissajous scanning method corrects eye motion artifacts in optical coherence tomography angiography (OCT-A) images. This technique produces accurate, motion-free en face OCT-A images of the posterior eye segment in vivo.
Area of Science:
- Ophthalmology
- Biomedical Imaging
- Optical Coherence Tomography
Background:
- Eye motion artifacts degrade the quality of en face optical coherence tomography angiography (OCT-A) images.
- Accurate imaging of the posterior segment is crucial for diagnosing and monitoring ocular diseases.
Purpose of the Study:
- To develop and validate a novel method for correcting eye motion artifacts in en face OCT-A images.
- To enable high-quality, artifact-free in vivo imaging of the posterior eye segment.
Main Methods:
- Modification of the standard Lissajous scanning pattern for OCT-A compatibility.
- Development of a corresponding software-based motion correction algorithm.
- Validation through comparison with uncorrected images, scanning laser ophthalmoscopy, and repeatability tests.
Main Results:
- The proposed method effectively corrects eye motion artifacts in en face OCT-A images.
- Motion-corrected images show improved accuracy and clarity compared to uncorrected images.
- The technique demonstrates robustness, including handling of eye blinking.
Conclusions:
- The modified Lissajous scanning method with software correction successfully eliminates eye motion artifacts in en face OCT-A.
- This approach provides accurate, motion-free in vivo imaging of the posterior eye segment.
- The method holds significant potential for enhanced ophthalmic diagnostics and research.
Keywords:
(100.0100) Image processing(170.3880) Medical and biological imaging(170.4470) Ophthalmology(170.4500) Optical coherence tomographyMore Related Videos
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