Optical radiation for therapeutic heating of biological tissues

Authors

  • S. Shnaider National Technical University of Ukraine "Kyiv Polytechnic Institute", Ukraine
  • V. L. Sigal National Technical University of Ukraine "Kyiv Polytechnic Institute", Ukraine

DOI:

https://doi.org/10.1109/ICATT.1997.1235248

Abstract

To achieve successful results in diagnostics of the laser therapy all thermal processes in biological tissues during laser irradiation should be considered taking into account whole scope of thermal, optical and damage events. A Nd: YAG laser emitting at the 1064-nm wavelength is useful for heating of localized tissue area without irreversible damage and necrosis of tissue with temperatures to 50-60 °C. However, conditions of irradiation should be chosen carefully to avoid heating of normal tissue.

In our work quantitative measurements of the temperature distribution have been made for various types of laser beam profile taking into account optical properties of tissue, blood perfusion rate, applied convective cooling.

References

Welch, A.J.; van Gemert, M.J.C.; Cheong, W.F. Laser physics and thermal properties. Lasers in Cardiovascular Medicine and Surgery : Fundamentals and Techniques. Boston: Kluwer Academic, 1990 [ed. by G.S. Abela], Ch. 6.

Wyman, D.R.; Whelan, W.M.; Wilson, B.C. Interstitial laser photocoagulation: Nd:YAG optical fiber source compared to point heat source. Lasers Surg. Med., 1992, Vol. 12, p. 659-664.

Shnaider, S.; Sigal, V.; Panteleev, A. Mathematical modeling for local laser hyperthermia of biological tissues. Proc. of Int. Conf. on Transfer Processes in Biomedical Problems, 100. Minsk: A.V. Luikov Heat and Mass Transfer Institute, 1995.

Published

1997-05-24