摘要
本文提出了无损测量生物组织血液灌注率的体表绝热法。推导出了体表绝热时生物组织内温度响应的一维解析解。采用二维生物传热模型,分析了生物组织有限厚度、体表有限绝热面积和血液灌注率分布不均匀的影响。对人体组织的血液灌注率进行了测量,实测温度响应与理论预测值吻合。由于利用的只是体表的瞬态温度信息,对生物组织不会造成损伤,也不会干扰生物组织正常的生理状态,整个测量系统也比较简单。
In this paper, a one dimension analytical solution for bio-tissue's temperature on condition that the body surface is adiabatic is derived based on Pennes' bio-heat equation. The effects of the finite thickness of bio-tissue, the finite body surface's adiabatic zone and the asymmetric distribution of the blood perfusion are discussed by using the 2D bio-heat transfer model. Because only the surface's temperature need be measured, the technology of adiabatic body surface would not cause any damage to the bio-tissue, neither would it disturb the normal state of bio-tissue, and the whole measure system are so simple too.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2003年第1期69-72,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金重点基金资助项目(No.59836240)
关键词
生物组织
血液灌注率
无损测量
体表绝热法
blood perfusion
noninvasive measurement
adiabatic surface technology
