摘要
考虑生物组织的热物性非均匀性 ,建立激光与生物组织热相互作用的多层结构模型 ,探讨无相变时生物组织中的热量传递规律。通过Laplace变换得出两层结构模型中组织温度分布的精确解 ,考察生物组织表面的温度变化规律 ,由此预测组织达到气化所需的时间和热损伤区域的大小。研究表明 。
Considering the heterogeneous thermal properties of living tissues, a multilayer heat transfer model for laser tissue thermal interaction is presented in this paper. A closed form analytical solution to the temperature transients within two tissue layers is obtained using the Laplace integral transform method. Heat transfer behaviors inside the tissues before evaporation were investigated. The critical time required to vaporize the surface tissue and the thermal damage depth are numerically predicted. Study shows that there is evident difference in temperature predictions between the uniform model and the heterogeneous one.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2002年第5期465-470,共6页
Chinese Journal of Lasers
基金
国家自然科学基金
清华大学机械工程学院基础研究基金资助
中国科学院百人计划合作项目。
关键词
激光
生物组织
热相互作用
多层结构模型
laser medicine, biotissue, thermal interaction, heat transfer, heterogeneous thermal properties, multiplayer model, apparent conductivity
