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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 5, Iss. 1 — Jan. 1, 2014
  • pp: 322–337

Depth-resolved model-based reconstruction of attenuation coefficients in optical coherence tomography

K. A. Vermeer, J. Mo, J. J. A. Weda, H. G. Lemij, and J. F. de Boer  »View Author Affiliations


Biomedical Optics Express, Vol. 5, Issue 1, pp. 322-337 (2014)
http://dx.doi.org/10.1364/BOE.5.000322


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Abstract

We present a method, based on a single scattering model, to calculate the attenuation coefficient of each pixel in optical coherence tomography (OCT) depth profiles. Numerical simulations were used to determine the model’s response to different depths and attenuation coefficients. Experiments were performed on uniform and layered phantoms with varying attenuation coefficients. They were measured by a 1300 nm OCT system and their attenuation coefficients were evaluated by our proposed method and by fitting the OCT slope as the gold standard. Both methods showed largely consistent results for the uniform phantoms. On the layered phantom, only our proposed method accurately estimated the attenuation coefficients. For all phantoms, the proposed method largely reduced the variability of the estimated attenuation coefficients. The method was illustrated on an in-vivo retinal OCT scan, effectively removing common imaging artifacts such as shadowing. By providing localized, per-pixel attenuation coefficients, this method enables tissue characterization based on attenuation coefficient estimates from OCT data.

© 2013 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6935) Medical optics and biotechnology : Tissue characterization
(110.3010) Imaging systems : Image reconstruction techniques
(110.3200) Imaging systems : Inverse scattering

ToC Category:
Optical Coherence Tomography

History
Original Manuscript: October 18, 2013
Revised Manuscript: December 6, 2013
Manuscript Accepted: December 12, 2013
Published: December 23, 2013

Citation
K. A. Vermeer, J. Mo, J. J. A. Weda, H. G. Lemij, and J. F. de Boer, "Depth-resolved model-based reconstruction of attenuation coefficients in optical coherence tomography," Biomed. Opt. Express 5, 322-337 (2014)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-5-1-322


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