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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 13 — Jul. 1, 2008
  • pp: 1425–1427

Phase-resolved Doppler optical coherence tomography—limitations and improvements

Anna Szkulmowska, Maciej Szkulmowski, Andrzej Kowalczyk, and Maciej Wojtkowski  »View Author Affiliations


Optics Letters, Vol. 33, Issue 13, pp. 1425-1427 (2008)
http://dx.doi.org/10.1364/OL.33.001425


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Abstract

We describe how the simple phase difference averaging causes a systematic bias in the velocity estimation obtained by phase-resolved Fourier domain optical coherence tomography (FdOCT). The magnitude of this bias depends on the signal-to-noise ratio as well as proximity of the measured velocity to the limits of the velocity range. We demonstrate the proper way of data processing, which enables obtaining velocity values free of this error. We validate the improved technique by measurements of flow velocity in glass capillaries, in human retinal vessels, and we compare the results with those obtained by standard phase-resolved FdOCT.

© 2008 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(110.4153) Imaging systems : Motion estimation and optical flow

ToC Category:
Imaging Systems

History
Original Manuscript: February 21, 2008
Revised Manuscript: May 17, 2008
Manuscript Accepted: May 19, 2008
Published: June 20, 2008

Virtual Issues
Vol. 3, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Anna Szkulmowska, Maciej Szkulmowski, Andrzej Kowalczyk, and Maciej Wojtkowski, "Phase-resolved Doppler optical coherence tomography—limitations and improvements," Opt. Lett. 33, 1425-1427 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-13-1425


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