扩展生物热方程以纳入加热过程中组织内部水分的蒸发。

Expanding the bioheat equation to include tissue internal water evaporation during heating.

作者信息

Yang Deshan, Converse Mark C, Mahvi David M, Webster John G

机构信息

Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706, USA.

出版信息

IEEE Trans Biomed Eng. 2007 Aug;54(8):1382-8. doi: 10.1109/TBME.2007.890740.

DOI:10.1109/TBME.2007.890740

PMID:17694858

Abstract

We propose a new method to study high temperature tissue ablation using an expanded bioheat diffusion equation. An extra term added to the bioheat equation is combined with the specific heat into an effective (temperature dependent) specific heat. It replaces the normal specific heat term in the modified bioheat equation, which can then be used at temperatures where water evaporation is expected to occur. This new equation is used to numerically simulate the microwave ablation of bovine liver and is compared to experimental ex vivo results.

摘要

我们提出了一种使用扩展的生物热扩散方程来研究高温组织消融的新方法。添加到生物热方程中的一个额外项与比热相结合，形成一个有效（与温度相关）比热。它取代了修正后的生物热方程中的常规比热项，从而可用于预计会发生水蒸发的温度条件下。这个新方程用于对牛肝的微波消融进行数值模拟，并与体外实验结果进行比较。