Numerical method for axial motion artifact correction in retinal spectral-domain optical coherence tomography

Abstract

A numerical method that compensates image distortions caused by random fluctuations of the distance to an object in spectral-domain optical coherence tomography (SD OCT) has been proposed and verified experimentally. The proposed method is based on the analysis of the phase shifts between adjacent scans that are caused by micrometer-scale displacements and the subsequent compensation for the displacements through phase-frequency correction in the spectral space. The efficiency of the method is demonstrated in model experiments with harmonic and random movements of a scattering object as well as during in vivo imaging of the retina of the human eye.

Keywords

optical coherence tomography (OCT) / motion artifact correction / retinal imaging / numerical method

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Acknowledgements

This work was supported by the State task for IAP RAS (project No. 0035-2019-0013) in part of method development by the Russian scientific foundation (project No. 17-15-01507) in part of model experiments and setup creating, the Russian Federal target program (project 14.610.21.0014 unique No. RFMEFI61017X0014) in part of retinal imaging experiments.

The authors report no conflict of interest.

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