RADIAL STRUCTURE OF THE TEMPERATURE FIELD
IN BIOLOGICAL TISSUE UNDER IRRADIATION
BY A LASER BEAM

V. V. Barun and A. P. Ivanov

UDC 536.33

Using the previously developed method, we have obtained 
analytically the Green function in the time and radial coordinates 
for the problem on medium heating under external irradiation. On this 
basis, the radial structure of the temperature field in the biological 
tissue has been investigated. The influence of the radial diffusion 
of light on the thermal conditions of the tissue has been estimated, 
and it has been shown that at fairly large times after irradiation 
such diffusion can be neglected. Examples of radial and depth temperature 
distributions at various optical parameters of the tissue are given.

B. I. Stepanov Institute of Physics, National Academy 
of Sciences of Belarus, 68 Nezalezhnasti Ave., 220072, Minsk. Belarus. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 78, No. 4, pp. 
82-86, July-August, 2005. Original article submitted July 
29, 2004.