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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 14, Iss. 6 — Jun. 1, 1997
  • pp: 1231–1242

Model of optical coherence tomography of heterogeneous tissue

J. M. Schmitt and A. Knüttel  »View Author Affiliations


JOSA A, Vol. 14, Issue 6, pp. 1231-1242 (1997)
http://dx.doi.org/10.1364/JOSAA.14.001231


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Abstract

A comprehensive model of optical coherence tomography (OCT) is described that includes the interference effects that produce speckle in images of dense heterogeneous tissue. It is based on the extended Huygens–Fresnel formulation of beam propagation in a turbulent atmosphere, adapted to the analysis of OCT. Incorporated in the model is a fractal description of the size distribution of scatterers in tissue. We demonstrate its application in the simulation of images of tissue volumes containing high-contrast targets embedded in a mixture of two sizes of particles. The simulated images show the degradation of image quality caused by speckle noise, along with the benefits of employing a light source with a short coherence time and an objective lens with a high numerical aperture. Based on model results, an estimate of the maximum probing depth is given in terms of the design variables of an OCT scanner and the optical properties of the tissue.

© 1997 Optical Society of America

History
Original Manuscript: September 4, 1996
Revised Manuscript: December 5, 1996
Manuscript Accepted: December 5, 1996
Published: June 1, 1997

Citation
J. M. Schmitt and A. Knüttel, "Model of optical coherence tomography of heterogeneous tissue," J. Opt. Soc. Am. A 14, 1231-1242 (1997)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-14-6-1231

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