AO-OCT with reference arm phase shifting for complex conjugate artifact-free imaging of in vivo retinal structures

Robert J. Zawadzki; Dae Yu Kim; Steven M. Jones; Suman Pilli; Scot S. Olivier; John S. Werner

doi:10.1117/12.873955

9 March 2011 AO-OCT with reference arm phase shifting for complex conjugate artifact-free imaging of in vivo retinal structures

Robert J. Zawadzki, Dae Yu Kim, Steven M. Jones, Suman Pilli, Scot S. Olivier, John S. Werner

Author Affiliations +

Proceedings Volume 7885, Ophthalmic Technologies XXI; 78850B (2011) https://doi.org/10.1117/12.873955
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

We summarize the performance of an AO-OCT system with reference arm phase shifting for complex conjugate artifactfree imaging of in vivo retinal structures. As a complex conjugate artifact removal (CCR) method we used a previously reported technique requiring constant phase shifts between consecutive A-scans. In our system these shifts were generated by continuous beam path-length changes from offsetting the pivot point of the scanning mirror placed in the system reference arm. In order to reconstruct the complex spectral fringe pattern we used Fourier transformation along the transverse axis and a filtering algorithm. The suppression ratio of mirror complex artifact images was assessed based on acquired in vivo CCR AO-OCT images. Finally, potential problems and limitations connected with this acquisition scheme and data processing algorithms are discussed.

Citation Download Citation

Robert J. Zawadzki, Dae Yu Kim, Steven M. Jones, Suman Pilli, Scot S. Olivier, and John S. Werner "AO-OCT with reference arm phase shifting for complex conjugate artifact-free imaging of in vivo retinal structures", Proc. SPIE 7885, Ophthalmic Technologies XXI, 78850B (9 March 2011); https://doi.org/10.1117/12.873955

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