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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 4 — Apr. 1, 2014

Analysis of cross-sectional image filters for evaluating nonaveraged optical microangiography images

Roberto Reif, Siavash Yousefi, Woo June Choi, and Ruikang K. Wang  »View Author Affiliations


Applied Optics, Vol. 53, Issue 5, pp. 806-815 (2014)
http://dx.doi.org/10.1364/AO.53.000806


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Abstract

Optical microangiography (OMAG) is a method that enables the noninvasive extraction of blood vessels within biological tissues. OMAG B-frames are prone to noise; therefore, techniques such as B-frame averaging have been applied to reduce these effects. A drawback of this method is that the total acquisition time and amount of data collected are increased; hence, the data are susceptible to motion artifacts and decorrelation. In this paper we propose using an image filter on a nonaveraged OMAG B-frame to reduce its noise. Consequently, B-frames comparable to the averaged OMAG B-frame are obtained, while reducing the total acquisition and processing time. The method is tested with two different systems, a high-resolution spectral domain and a relatively low-resolution swept-source optical coherence tomography system. It is demonstrated that the weighted average filter produces the lowest B-frame error; however, all filters produce comparable results when quantifying the en face projection view image.

© 2014 Optical Society of America

OCIS Codes
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.6900) Medical optics and biotechnology : Three-dimensional microscopy
(170.6930) Medical optics and biotechnology : Tissue

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: October 7, 2013
Manuscript Accepted: December 20, 2013
Published: February 4, 2014

Virtual Issues
Vol. 9, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Roberto Reif, Siavash Yousefi, Woo June Choi, and Ruikang K. Wang, "Analysis of cross-sectional image filters for evaluating nonaveraged optical microangiography images," Appl. Opt. 53, 806-815 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-53-5-806

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