Journal
BIOMEDICAL OPTICS EXPRESS
Volume 13, Issue 10, Pages 5212-5230Publisher
Optica Publishing Group
DOI: 10.1364/BOE.467563
Keywords
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Funding
- Core Research for Evolutional Science and Technology
- Japan Society for the Promotion of Science
- [JPMJCR2105]
- [18H01893]
- [18K09460]
- [21H01836]
- [21K09684]
- [22K04962]
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This study presents a new scanning pattern to extend the field of view (FOV) of retinal OCT imaging and achieves high sampling density and motion correction through post-processing. The technique has good agreement in three-dimensional structures obtained from both healthy volunteers and patients.
Optical coherence tomography (OCT) is a high-speed non-invasive cross-sectional imaging technique. Although its imaging speed is high, three-dimensional high-spatial-samplingdensity imaging of in vivo tissues with a wide field-of-view (FOV) is challenging. We employed convolved Lissajous and slow circular scanning patterns to extend the FOV of retinal OCT imaging with a 1-mu m, 100-kHz-sweep-rate swept-source OCT prototype system. Displacements of sampling points due to eye movements are corrected by post-processing based on a Lissajous scan. Wide FOV three-dimensional retinal imaging with high sampling density and motion correction is achieved. Three-dimensional structures obtained using repeated imaging sessions of a healthy volunteer and two patients showed good agreement. The demonstrated technique will extend the FOV of simple point-scanning OCT, such as commercial ophthalmic OCT devices, without sacrificing sampling density.
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