激光照射有血流散热组织的一维瞬态温度分布函数研究  

The research on the one-dimensional functions of instantaneous temperature in biological tissue with bloodstream cooling radiated by laser

作　　者：田晓明[1] 

机构地区：[1]广东医学院物理学教研室,广东湛江524023

出　　处：《应用激光》2003年第6期363-365,356,共4页Applied Laser

摘　　要：研究激光热源在有血流散热的生物组织中形成的一维瞬态温度分布函数 ,适合于组织温度在热凝之前的传热过程。本文采用数学物理方程的定解求法解一维热传导偏微分方程 ,讨论结果的物理意义。结果表明 :当 μ >αh 时 ,激光热源在一维生物组织空间引起的温升一般随时间呈指数形式增大 ;而随与激光照射处的距离呈指数形式减少 ;当 μ <αh 时 ,组织空间任意点处的温升虽然随时间增大 ,但最终将趋于恒定值。The research was made on the one-dimensional functions of instantaneous temperature at time-space caused by laser heat source in biological tissue with bloodstream cooling. The functions are suitable for the procedure of heat transfer without coagulation. In this paper, the mathematical physics method had been used to find solution of the bias differentiating equations of one-dimensional heat transfer. The physics signification of the results was discussed. The consequence shows that the temperature rise in biological tissue caused by laser thermal source will raise to the power of time and decrease to the power of the distance from laser irradiating area in case of μ>α h . If μ<α h, though the temperature rise raise as time goes on, it will tend toward a constant value at the last.

关 键 词：激光照射 血流散热 生物组织 一维瞬态温度分布函数 热凝 

分 类 号：Q682[生物学—生物物理学]