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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 16 — Jun. 1, 2003
  • pp: 3027–3037

Precision of Measurement of Tissue Optical Properties with Optical Coherence Tomography

Alexander I. Kholodnykh, Irina Y. Petrova, Kirill V. Larin, Massoud Motamedi, and Rinat O. Esenaliev  »View Author Affiliations


Applied Optics, Vol. 42, Issue 16, pp. 3027-3037 (2003)
http://dx.doi.org/10.1364/AO.42.003027


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Abstract

Accurate and noninvasive measurement of tissue optical properties can be used for biomedical diagnostics and monitoring of tissue analytes. Noninvasive measurement of tissue optical properties (total attenuation and scattering coefficients, optical thickness, etc.) can be performed with the optical coherence tomography (OCT) technique. However, speckle noise substantially deteriorates the accuracy of the measurements with this technique. We studied suppression of speckle noise for accurate measurement of backscattering signal and scattering coefficient with the OCT technique. Our results demonstrate that the precision of measurement of backscattering signals with the OCT technique can be 0.2% for homogeneously scattering media and 0.7% for skin, if spatial averaging of speckle noise is applied. This averaging allows us to achieve the precision of tissue scattering coefficient measurements of approximately ∓0.8%. This precision can be further improved by a factor of 2–3, upon optimization of OCT operating parameters.

© 2003 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(170.1470) Medical optics and biotechnology : Blood or tissue constituent monitoring
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine

Citation
Alexander I. Kholodnykh, Irina Y. Petrova, Kirill V. Larin, Massoud Motamedi, and Rinat O. Esenaliev, "Precision of Measurement of Tissue Optical Properties with Optical Coherence Tomography," Appl. Opt. 42, 3027-3037 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-16-3027

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