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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 14281–14297

Flow velocity estimation by complex ambiguity free joint Spectral and Time domain Optical Coherence Tomography

Maciej Szkulmowski, Ireneusz Grulkowski, Daniel Szlag, Anna Szkulmowska, Andrzej Kowalczyk, and Maciej Wojtkowski  »View Author Affiliations


Optics Express, Vol. 17, Issue 16, pp. 14281-14297 (2009)
http://dx.doi.org/10.1364/OE.17.014281


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Abstract

We show that recently introduced joint Spectral and Time domain Optical Coherence Tomography (STdOCT) can be used for simultaneous complex ambiguity removal and functional Spectral OCT images. This permits to take advantage of higher sensitivity achievable near the zero-path delay. The technique can be used with all Spectral OCT systems that are equipped with an optical delay line (ODL) and provide oversampled scanning patterns. High sensitivity provided by STdOCT allows this technique to be used in Spectral OCT setups with acquisition speed of 100 000 lines/s. We show that different imaging ranges and velocity ranges can be achieved by switching on/off the ODL and a small modification in the processing algorithm. Additionally, the relatively small computational burden of the technique allows for fast computations in the range of less than 5 minutes for 3D data set. We present application of proposed technique to full-range two- and three-dimensional imaging. Morphological and Doppler tomograms of human retina in-vivo are shown. Finally, we identify and discuss artifacts of the technique.

© 2009 OSA

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(280.2490) Remote sensing and sensors : Flow diagnostics

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: May 22, 2009
Revised Manuscript: July 22, 2009
Manuscript Accepted: July 24, 2009
Published: July 31, 2009

Virtual Issues
Vol. 4, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Maciej Szkulmowski, Ireneusz Grulkowski, Daniel Szlag, Anna Szkulmowska, Andrzej Kowalczyk, and Maciej Wojtkowski, "Flow velocity estimation by complex ambiguity free joint Spectral and Time domain Optical Coherence Tomography," Opt. Express 17, 14281-14297 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-16-14281


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