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

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

Eye Center

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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.

Original language	English (US)
Title of host publication	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	7885
DOIs	https://doi.org/10.1117/12.873955
State	Published - 2011
Event	Ophthalmic Technologies XXI - San Francisco, CA, United States Duration: Jan 22 2011 → Jan 24 2011

Other

Other	Ophthalmic Technologies XXI
Country/Territory	United States
City	San Francisco, CA
Period	1/22/11 → 1/24/11

Keywords

aberration compensation
adaptive optics
complex conjugate artifact
imaging systems
medical optics instrumentation
ophthalmology
optical coherence tomography

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Biomaterials
Radiology Nuclear Medicine and imaging

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10.1117/12.873955

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AO-OCT with reference arm phase shifting for complex conjugate artifact-free imaging of in vivo retinal structures. / Zawadzki, Robert J.; Kim, Dae Yu; Jones, Steven M.; Pilli, Suman; Olivier, Scot S.; Werner, John S.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7885 2011. 78850B.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zawadzki, RJ, Kim, DY, Jones, SM, Pilli, S, Olivier, SS & Werner, JS 2011, AO-OCT with reference arm phase shifting for complex conjugate artifact-free imaging of in vivo retinal structures. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 7885, 78850B, Ophthalmic Technologies XXI, San Francisco, CA, United States, 1/22/11. https://doi.org/10.1117/12.873955

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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.",

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AU - Olivier, Scot S.

AU - Werner, John S.

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N2 - 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.

AB - 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.

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KW - adaptive optics

KW - complex conjugate artifact

KW - imaging systems

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KW - optical coherence tomography

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

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Keywords

ASJC Scopus subject areas

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