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Proceedings Article

Exposure time dependence of image quality in high-speed retinal in vivo Fourier domain OCT

[+] Author Affiliations
Robert J. Zawadzki, Sophie Laut, John S. Werner

Univ. of California/Davis (USA)

Bradley A. Bower, Mingtao Zhao, Marinko Sarunic, Joseph A. Izatt

Duke Univ. (USA)

Proc. SPIE 5688, Ophthalmic Technologies XV, 45 (May 02, 2005); doi:10.1117/12.591660
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From Conference Volume 5688

  • Ophthalmic Technologies XV
  • Fabrice Manns; Per G. Soederberg; Arthur Ho; Bruce E. Stuck; Michael Belkin
  • San Jose, CA | January 22, 2005

abstract

We built a Fourier domain optical coherence tomography (FD-OCT) system using a line scan CCD camera that allows real time data display and acquisition. This instrument is able to produce 2D B-scans as well as 3D data sets with human subjects in vivo in clinical settings. In this paper we analyze the influence of varying exposure times of the CCD detector on image quality. Sensitivity values derived from theoretical predictions have been compared with measurements (obtained with mirrors and neutral density filters placed in both interferometer arms). The results of these experiments, discussion about differences between sensitivity values, potential sources of discrepancies, and recommendations for optimal exposure times will be described in this paper. A short discussion of observed artifacts as well as possible ways to remove them is presented. The influence of relative retinal position with respect to reference mirror position will also be described.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Robert J. Zawadzki ; Bradley A. Bower ; Mingtao Zhao ; Marinko Sarunic ; Sophie Laut, et al.
"Exposure time dependence of image quality in high-speed retinal in vivo Fourier domain OCT", Proc. SPIE 5688, Ophthalmic Technologies XV, 45 (May 02, 2005); doi:10.1117/12.591660; http://dx.doi.org/10.1117/12.591660


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