Abstract
In optical coherence tomography (OCT), lateral motion is determined either by speckle tracking or by multi-aperture Doppler OCT. Here we show that both methods may provide incorrect results because, outside the focal plane, nonuniform axial motion is misinterpreted as lateral motion. First, we demonstrate the existence of this artifact by means of a simulation for speckle tracking. Then the physical origin of the artifact and its mathematical relation to defocus and axial motion are explained. It is shown that speckle tracking and multi-aperture Doppler OCT are equally affected by the artifact, which has a considerable effect, even for a defocus of less than one Rayleigh length.
| Original language | English |
|---|---|
| Journal | Optics Letters |
| Volume | 44 |
| Issue number | 6 |
| Pages (from-to) | 1315-1318 |
| Number of pages | 4 |
| ISSN | 0146-9592 |
| DOIs | |
| Publication status | Published - 15.03.2019 |
Funding
Funding. Bundesministerium für Bildung und Forschung (BMBF) (13GW0043C, 13GW0043E); Deutsche Forschungsgemeinschaft (DFG) (HU 629/6-1).
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 9 Industry, Innovation, and Infrastructure
Research Areas and Centers
- Academic Focus: Biomedical Engineering
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