INFLUENCE OF OPTICAL AND THERMOPHYSICAL
CHARACTERISTICS OF BIOLOGICAL TISSUE ON
ITS THERMAL CONDITIONS UNDER LASER IRRADIATION

V. V. Barun and A. P. Ivanov

UDC 536.33

On the basis of the developed analytical method of solving 
the heat conduction equation in a multicomponent biological tissue, 
its thermal conditions under laser irradiation have been investigated. 
Quantitative data on the temperature fields under a wide variation 
of the optical and thermophysical parameters in the tissue in the 
400-700-nm range of wavelengths are given. The steady-state regime 
of the field in the tissue at various depths has been investigated. 
Estimates of the possible use of the time dependence of temperature 
under tissue cooling to solve the inverse problem <197> determine 
the heat-conductivity coefficient, the parameter of heat exchange 
with the medium, and the depth attenuation coefficient of light - 
are given.

B. I. Stepanov Institute of Physics, National Academy of Sciences 
of Belarus, 68 F. Skorina Ave., Minsk, 220072, Belarus. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 78, No. 3, pp. 15-21, 
May-June, 2005. Original article submitted March 29, 2004.