无损重构生物体温度场和内热源场的简化边界元途径

生物体温度场的无损重构是生物医学传热学研究中的一个构其重要而困难的课题。本文针对生物体内部血液灌注率场和代谢率场未知但要无损重构温度场的问题，尝试给出一种只需利用体表温度就可确定内部温度场和热源场的简化边界元技术，并以人体上臂为例进行了相应的生构。方法对编制可供实用的二、三维动态无损温软件有一定的参考价值。

A Simplified Boundary Element Method for Noninvasive Reconstruction of Spatial Field of Temperature and Inner Heat Source in Biological Bodies

Noninvasive reconstruction of temperature field in biological bodies is a very im-portant and difficult problem in Biomedical Heat Transfer.The application of beundary ele-ment methed(BEM)for the calculation of inner temperature in biological bodies with com-plex shape was discussed and a simplified apprcach for simultaneous and noninvasive recon-struction of temperature field and the nonhomogeneous heat source without needing to know the spatial field of blood perfusion rate and metabolic rate was proposed in this paper. With this methed,when surface temperature at any Iocation of a biological body is recorded,the respective heat flux at that location on the surface can be obtained and then used to recon-struct the various parameters mentioned ahove.Since surface temperature can be measured with infrared thermometer,there is no perturbation to the bioloical body by the measure-ment itself,the reconstructed temperature is reliable.he spatial field of temperature in hu-man body,s forearm was calculated as an example in the paper. It has laid certain foundation for compiling the 2 and 3 dimensional software for noninvasive monitoring biological theies,transient temperature field.