摘要
本文提出了用于预测球形低温冷刀周围被损伤组织增长速率的一阶摄动解.模型中包括有血流和代谢热的影响,且允许生物组织的初始温度高于其相变温度.在求解过程中,冻结相和未冻结相的热容影响均被考虑.结果表明,本文所提出的一阶摄动解比Cooper解更接近实验值和数值解.
A perturbation solution of the first order is presented for predicting the rates of lesion growth in the frozen, tissue around spherical cryoprobes. In this model, the contribution of blood flow and metabolic heat generation has been included and it is not required that the tissue be initially at its phase change temperature. The heat capacity effects in both the frozen and unfrozen tissues have been considered in the process of solution. A comparison between Cooper's analytical solution and first order solution proposed indicates that the predicted rates of lesion growth using first order solution are closer to what is given by experimental data and by the numerical solution than those obtained by Cooper's analytical solution.
出处
《华中理工大学学报》
CSCD
北大核心
1989年第6期43-47,共5页
Journal of Huazhong University of Science and Technology
关键词
摄动法
冷冻
生物组织
热分析
相变
Perturbation method
Cryosurgery
Biological tissue
Thermal analysis
Phase change
Freezing
