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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. S1 — Aug. 28, 2005
  • pp: S156–S158

Effects of layer structure of the skin on the measured signal by optical coherence tomography

Wanrong Gao, Maohai Hu, Qian Chen, Xin Yue, Qi Jiang, Peng Li, Jianhui Fu, Jingli Zhu, Xiaochun Yang, and Lianfa Bo  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue S1, pp. S156-S158 (2005)


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Abstract

Optical coherence tomography (OCT) is a noninvasive cross-sectional imaging modality capable of measuring tissue morphology and function with high spatial resolution. Both the amplitude and the phase of the interometric heterodyne signal can be exploited to obtain the profile of sample reflectivity related to its microstructure and the bi-directional blood flowing velocity information. The fact that the skin and human mucosa have a layer structure suggests that the backscattered signal from tissue arises from two sources. The first is the scattering particles within the tissue. The second is the Fresnel refraction on the interface between two layers. However, the analysis available only considers one aspect of the backscattering sources. In this paper, we report an analysis that is based on the combination of both the particle scattering within the tissue and the Fresnel reflection on the interfaces between two layers. The new model is more reasonable for establishing the relationship between the signal detected by OCT scanner and tissue structures.

© 2005 Chinese Optics Letters

OCIS Codes
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(230.4170) Optical devices : Multilayers

Citation
Wanrong Gao, Maohai Hu, Qian Chen, Xin Yue, Qi Jiang, Peng Li, Jianhui Fu, Jingli Zhu, Xiaochun Yang, and Lianfa Bo, "Effects of layer structure of the skin on the measured signal by optical coherence tomography," Chin. Opt. Lett. 3, S156-S158 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-S1-S156


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