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Theoretical invesitigation of laser treatment of ota’s nevus with external skin cooling

  • Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Q-switched lasers are effective in the treatment of Ota’ Nevus, but complications can arise after laser treatment due to high residual temperature. In this study, a four-layer skin model for Ota’s Nevus was established and a local thermodynamic non-equilibrium two-temperature model was proposed to obtain skin temperature after treatment. Skin cooling was introduced to protect the skin from thermal damage. The effects of different cooling procedures were investigated. The results show that 1064nm laser has better performance than 755nm laser for deep-buried melanosomes. Cryogen Spray Cooling (CSC) is effective only in cooling the epidermis, while continuous cold air cooling can cause a larger drop in dermal temperature, which can effectively protect the dermis. For 755nm laser, -10°C cold air cooling for 15s combining 100ms CSC can effectively protect both the epidermis and the dermis. For 1064nm laser, 100ms CSC is necessary.

Original languageEnglish
Title of host publicationInternational Conference on Computational Methods for Thermal Problems
EditorsNicola Massarotti, Perumal Nithiarasu, Pradip Dutta, C. Ranganayakulu
PublisherDalian University of Technology
Pages793-796
Number of pages4
ISBN (Print)9788874314591, 9788874318285
StatePublished - 2018
Event5th International Conference on Computational Methods for Thermal Problems, THERMACOMP 2018 - Bengaluru, India
Duration: 9 Jul 201811 Jul 2018

Publication series

NameInternational Conference on Computational Methods for Thermal Problems
Volume0
ISSN (Print)2305-5995
ISSN (Electronic)2305-6924

Conference

Conference5th International Conference on Computational Methods for Thermal Problems, THERMACOMP 2018
Country/TerritoryIndia
CityBengaluru
Period9/07/1811/07/18

Keywords

  • Laser dermatology
  • Nevus of ota
  • Skin cooling
  • Two-temperature model

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