Three-dimensional displacement retrieval in optical coherence elastography

Balázs Dura-Kovács; Andrea Mazzolani; Jakub Zálešák; Jiayue Li; Matt Hepburn; Brendan Kennedy; Peter R. T. Munro

doi:10.1117/12.3005628

13 March 2024 Three-dimensional displacement retrieval in optical coherence elastography

Balázs Dura-Kovács, Andrea Mazzolani, Jakub Zálešák, Jiayue Li, Matt Hepburn, Brendan Kennedy, Peter R. T. Munro

Proceedings Volume PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII; PC1283028 (2024) https://doi.org/10.1117/12.3005628
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Strain retrieval from maps of displacement due to mechanical loading is central to optical coherence elastography. However, displacement data is usually highly oscillatory since it is derived from the phase difference between OCT images. Oscillations limit sensitivity and signal to noise ratio of retrieved strain. We present a novel strain retrieval method which determines the unique spectral domain transformation and transverse displacement compensation that maps the unloaded A-scan to the loaded A-scan, exactly, for regions of constant strain. Our novel method of strain retrieval has a higher sensitivity and signal to noise ratio than existing approaches.

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Citation Download Citation

Balázs Dura-Kovács, Andrea Mazzolani, Jakub Zálešák, Jiayue Li, Matt Hepburn, Brendan Kennedy, and Peter R. T. Munro "Three-dimensional displacement retrieval in optical coherence elastography", Proc. SPIE PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII, PC1283028 (13 March 2024); https://doi.org/10.1117/12.3005628

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