April 2011
Volume 52, Issue 14
Free
ARVO Annual Meeting Abstract  |   April 2011
Extraction of Arbitrary OCT Scan Paths from 3D Ultra High-Speed Ultra Wide-Field Swept Source OCT
Author Affiliations & Notes
  • Thomas Klein
    Faculty of Physics,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Lukas Reznicek
    Ophthalmology,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Wolfgang Wieser
    Faculty of Physics,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Christoph M. Eigenwillig
    Faculty of Physics,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Benjamin Biedermann
    Faculty of Physics,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Anselm Kampik
    Ophthalmology,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Robert Huber
    Faculty of Physics,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Aljoscha S. Neubauer
    Ophthalmology,
    Ludwig-Maximilians-University, Muenchen, Germany
  • Footnotes
    Commercial Relationships  Thomas Klein, None; Lukas Reznicek, None; Wolfgang Wieser, None; Christoph M. Eigenwillig, None; Benjamin Biedermann, None; Anselm Kampik, None; Robert Huber, None; Aljoscha S. Neubauer, None
  • Footnotes
    Support  Emmy Noether program of the German Research Foundation (DFG - HU 1006/2-1) and the European Union project FUN OCT (FP7 HEALTH, contract no. 201880)
Investigative Ophthalmology & Visual Science April 2011, Vol.52, 1328. doi:
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      Thomas Klein, Lukas Reznicek, Wolfgang Wieser, Christoph M. Eigenwillig, Benjamin Biedermann, Anselm Kampik, Robert Huber, Aljoscha S. Neubauer; Extraction of Arbitrary OCT Scan Paths from 3D Ultra High-Speed Ultra Wide-Field Swept Source OCT. Invest. Ophthalmol. Vis. Sci. 2011;52(14):1328.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract
 
Purpose:
 

To obtain custom OCT scans without the need to predefine regions of interest (ROI) in order to adequately image retinal pathologies. Custom OCT scans have been reconstructed from a single ultra high-speed ultra wide-field swept source OCT scan.

 
Methods:
 

A 1050nm swept source FDML OCT was constructed running at 685 kHz axial scan rate covering approx. 70° field of view. Imaging of 4 normal eyes was performed with the device at 1900x1900 A-scans. From the obtained high resolution 3D OCT dataset image processing with Labview was performed and clinically meaningful custom OCT scans were constructed.

 
Results:
 

From all 3D datasets custom OCT scan patterns could be constructed. Various circular scans around the optic disc, arched scans following the retinal vessels and nerve fibers and macular circles were extracted from the 3D dataset. In addition, by choosing various z-levels vitreous and choroid could be reconstructed over the posterior pole including both, macula and optic disc.

 
Conclusions:
 

Reconstructing custom OCT scans from ultra high-speed ultra wide field 3D OCT datasets is feasible. This technology removes the current need to predefine ROI because those ROI scans can be reconstructed from the densely sampled 3D dataset with high resolution in post processing.  

 
Keywords: imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound) • imaging/image analysis: non-clinical • image processing 
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