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Proceedings Paper

Monte Carlo simulation of converging laser beams propagating in skin tissue phantoms
Author(s): Ke Dong; Zhi Song; Jun Q. Lu; Xin-Hua Hu
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Paper Abstract

Numerical simulations have been performed to investigate the light distribution in strongly scattering tissues for collimated laser beams. However, very little is known for the propagation of converging laser beams with large cone angles for the lack of efficient algorithms to deal with the difficult boundary conditions. Furthermore, the important effect of surface roughness on the light distribution inside the skin tissues has not been studied. We developed a new Monte Carlo method to simulate the distribution of photon density of converging laser beams propagating in skin tissue phantoms. This method can be used to obtain directly the photon density distribution in the framework of radiative transfer theory. We calculated the steady-state distributions of the photon density and found several important features that are uniquely related to the propagation of the converging beams in skin tissues. We also conducted preliminary study on the effect of roughness of skin surface on the light distribution inside the skin tissue with the new Monte Carlo method.

Paper Details

Date Published: 22 June 1999
PDF: 7 pages
Proc. SPIE 3590, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems IX, (22 June 1999); doi: 10.1117/12.350948
Show Author Affiliations
Ke Dong, East Carolina Univ. (United States)
Zhi Song, Nankai Univ. (United States)
Jun Q. Lu, East Carolina Univ. (United States)
Xin-Hua Hu, East Carolina Univ. (United States)


Published in SPIE Proceedings Vol. 3590:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems IX
Kenton W. Gregory; R. Rox Anderson; David S. Robinson; Reza S. Malek; Lou Reinisch; Darryl J. Bornhop; Kenneth Eugene Bartels; Hans-Dieter Reidenbach; Lloyd P. Tate; C. Gaelyn Garrett; Eugene A. Trowers; Aaron P. Perlmutter; Kenneth Eugene Bartels; Lawrence S. Bass; Darryl J. Bornhop; C. Gaelyn Garrett; Kenton W. Gregory; Nikiforos Kollias; Harvey Lui; Reza S. Malek; Aaron P. Perlmutter; Hans-Dieter Reidenbach; Lou Reinisch; David S. Robinson; Lloyd P. Tate; Eugene A. Trowers, Editor(s)

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