Proceedings PaperLaser light-tissue interaction: heterogeneity effects
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This report discusses the effects of pulsed, spatially inhomogeneous deposition of laser light energy that causes local heating of microregions in the exposed biotissue. The local heating effects may be due to: (1) the quantum character of absorption; (2) spatially inhomogeneous absorptivity of the tissue; and (3) spatially inhomogeneous light intensity distribution. The discussion involves various biological organization levels: molecular chromophores, cells, and biotissues (exemplified by laser ablation). The inference drawn are that: (1) it is necessary to take account of the local heating effects in the interaction between laser light and biotissue and (2) it is potentially possible to use these effects in laser therapy (laser photothermotherapy).