Improved representation of retinal data acquired with volumetric Fd-OCT: Co-registration, visualization and reconstruction of a large field of view

Robert Zawadzki, Alfred R. Fuller, Stacey S. Choi, David F. Wiley, Bernd Hamann, John S Werner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

Advances in Fourier-domain optical coherence tomography (Fd-OCT) permit visualization of three-dimensional morphology of in-vivo retinal structures in a way that promises to revolutionize clinical and experimental imaging of the retina. The relevance of these advances will be further increased by the recent introduction of several commercial Fd-OCT instruments that can be used in clinical practice. However, due to some inherent limitations of current Fd-OCT technology (e.g., lack of spectroscopic information, inability to measure fluorescent signals), it is important to co-register Fd-OCT data with images obtained by other clinical imaging modalities such as fundus cameras and fluorescence angiography to create a more complete interpretation and representation of structures imaged. The co-registration between different imaging platforms becomes even more important if small retinal changes are monitored for early detection and treatment. Despite advances in volume acquisition speed with FD-OCT, eye/head motion artifacts can be still seen on acquired data. Additionally high-sampling density, large fleld-of-view (FOV) Fd-OCT volumes may also be needed for comparison with conventional imaging. In standard Fd-OCT systems, higher sampling density and larger imaging FOV (with constant sampling densities) lead to longer acquisition time which further increases eye/head motion artifacts. To overcome those problems, we tested 3D stitching of multiple, smaller retinal volumes which can be acquired in a less time (reduction of motion artifacts) and/or when stitched create a larger FOV representation of the retina. Custom visualization software that makes possible manual co-registration and simultaneous visualization of volumetric Fd-OCT data sets is described. Volumetric visualizations of healthy retinas with corresponding fundus pictures are presented followed by examples of retinal volumes of high sampling density that are created from multiple "standard" Fd-OCT volumes.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6844
DOIs
StatePublished - 2008
EventOphthalmic Technologies XVIII - San Jose, CA, United States
Duration: Jan 19 2008Jan 21 2008

Other

OtherOphthalmic Technologies XVIII
CountryUnited States
CitySan Jose, CA
Period1/19/081/21/08

Keywords

  • (110.4500) optical coherence tomography
  • (120.3890) medical optics instrumentation
  • (170.0110) imaging system
  • (170.4470) ophthalmology

ASJC Scopus subject areas

  • Engineering(all)

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    Zawadzki, R., Fuller, A. R., Choi, S. S., Wiley, D. F., Hamann, B., & Werner, J. S. (2008). Improved representation of retinal data acquired with volumetric Fd-OCT: Co-registration, visualization and reconstruction of a large field of view. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 6844). [68440C] https://doi.org/10.1117/12.764070