title: Effective interface dynamics of laser-induced heat diffusion-limited thermal coagulation.
abstract: The general problems of describing local thermal coagulation dynamics leading to the growth of necrosis that is limited by heat diffusion to surrounding live tissue is considered. It is demonstrated that in this case the typically used distributed model for thermal coagulation is based on a self-inconsistent approach, and a more rigorously justified free boundary model is derived. This free boundary model takes into account only the general properties of thermal coagulation and so provides a self-consistent description. It is shown that the two models, nevertheless, predict practically the same dynamics of necrosis growth because this growth is insensitive to the particular properties of heat transfer in the thin layer of partially damaged tissue. Necrosis growth is also simulated numerically under various physical conditions to verify the assumptions adopted. © 1998 Society of Photo-Optical Instrumentation Engineers.
authors.forename: I A
authors.initials: IA
authors.lastname: Lubashevsky
authors.forename: A V
authors.initials: AV
authors.lastname: Priezzhev
authors.forename: V V
authors.initials: VV
authors.lastname: Gafiychuk