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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 4, Iss. 11 — Nov. 1, 2013
  • pp: 2362–2375

Monitoring of wound healing process of human skin after fractional laser treatments with optical coherence tomography

Meng-Tsan Tsai, Chih-Hsun Yang, Su-Chin Shen, Ya-Ju Lee, Feng-Yu Chang, and Cheng-Shin Feng  »View Author Affiliations

Biomedical Optics Express, Vol. 4, Issue 11, pp. 2362-2375 (2013)

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Fractional photothermolysis induced by non-ablative fractional lasers (NAFLs) or ablative fractional lasers (AFLs) can remodel the skin, regenerate collagen, and remove tumor tissue. However, fractional laser treatments may result in severe side effects, and multiple treatments are required to achieve the expected outcome. Thus, the treatment outcome and downtime after fractional laser treatments are key issues to determine the following treatment strategy. In this study, an optical coherence tomography (OCT) system was implemented for in vivo studies of wound healing after NAFL and AFL treatments. According to the OCT scanning results, the laser-induced photothermolysis including volatilization and coagulation could be morphologically identified. To continue monitoring the wound healing process, the treated regions were scanned with OCT at different time points, and the en-face images at various tissue depths were extracted from three-dimensional OCT images. Furthermore, to quantitatively evaluate the morphological changes at different tissue depths during wound healing, an algorithm was developed to distinguish the backscattering properties of untreated and treated tissues. The results showed that the coagulation damage induced by the NAFLs could be rapidly healed in 6 days. In contrast, the tissue volatilization induced by AFLs required a longer recovery time of 14 days. In conclusion, this study establishes the feasibility of this methodology as a means of clinically monitoring treatment outcomes and wound healing after fractional laser treatments.

© 2013 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.1870) Medical optics and biotechnology : Dermatology
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(290.1350) Scattering : Backscattering
(170.2655) Medical optics and biotechnology : Functional monitoring and imaging

ToC Category:
Dermatological Applications

Original Manuscript: July 30, 2013
Revised Manuscript: September 27, 2013
Manuscript Accepted: October 1, 2013
Published: October 7, 2013

Meng-Tsan Tsai, Chih-Hsun Yang, Su-Chin Shen, Ya-Ju Lee, Feng-Yu Chang, and Cheng-Shin Feng, "Monitoring of wound healing process of human skin after fractional laser treatments with optical coherence tomography," Biomed. Opt. Express 4, 2362-2375 (2013)

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