In vitro measurements of temperature-dependent specific heat of liver tissue

被引：46
|
作者：
Haemmerich, D
dos Santos, I
Schutt, DJ
Webster, JG
Mahvi, DM
机构：
[1] Med Univ S Carolina, Childrens Hosp, Dept Pediat, Charleston, SC 29425 USA
[2] Univ Brasilia, Dept Elect Engn, BR-70910900 Brasilia, DF, Brazil
[3] Univ Wisconsin, Dept Biomed Engn, Madison, WI USA
[4] Univ Wisconsin, Dept Surg, Madison, WI USA
来源：
MEDICAL ENGINEERING & PHYSICS | 2006年 / 28卷 / 02期
关键词：
specific heat temperature dependence; thermal tissue properties; tumor ablation; specific heat; liver tissue;
D O I：
10.1016/j.medengphy.2005.04.020
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We measured the specific heat of liver tissue in vitro by uniformly heating liver samples between two electrodes. We insulated the samples by expanded polystyrene, and corrected for heat loss and water loss. The specific heat of the liver is temperature-dependent, and increases by 17% at 83.5 degrees C (p < 0.05), compared to temperatures below 65 degrees C. The average specific heat was 3411 J kg(-1) K-1 at 25 degrees C, and 4187 J kg(-1) K-1 83.5 degrees C. Water loss from the samples was significant above 70 degrees C, with similar to 20% of reduction in sample mass at 90 degrees C. (c) 2005 IPEM. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：194 / 197
页数：4
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