生物组织中几类热波传播特性的研究  

Study on Propagation Characteristics of Several Thermal Waves in Living Tissues.

作　　者：刘静[1,2] 卢文强 王存诚 张学学[1,2] 

机构地区：[1]清华大学热能工程系 [2]中国科技大学研究生院物理系

出　　处：《航天医学与医学工程》1997年第4期254-258,共5页Space Medicine & Medical Engineering

基　　金：国家自然科学基金

摘　　要：为探讨热波在不同边界条件下发生反射、衰减、相位突变、叠加与分解特性，考虑到热波的相位，以生物组织中的正弦波和方波为例，对不同热松弛时间下热波的传播过程进行了数值考察和分析，其结果可为将热波效应应用于活体热状态辨识及处理某些复杂的生物热问题打下一定的基础。本文还基于数值算例对一个从常规角度看来不易理解的生物热现象作出了合理解释，指出了该类效应在相关医学问题上的应用前景。To identify the thermal states of living tissues as well as for dealing with some complicated biothermal problems,the propagation of sinusoidal and square thermal wave under different thermal relaxation time are investigated numerically and theoretically concerning the phase of thermal wave in living tissue. Thus new knowledges on the thermal wave behaviors like reflection, decay, phase jumping, superposition and resolution etc. under different boundary conditions are revealed.Based on the numerical analysis, the paper also interpreted an intriguing biothermal phenomenon and pointed out some promising applications of this wave effect to the corresponding clinics problems.

关 键 词：生物传热 热波 衰减 相位转换 

分 类 号：R318.03[医药卫生—生物医学工程]