The modelling of heating a tissue subjected to external electromagnetic field.

The boundary element method (BEM) is used to solve the coupled problem connected with the biological tissue heating. The tissue treated as a non-homogeneous domain (healthy tissue and tumor region) is subjected to external electromagnetic field. The thermal effect is produced by electrodes that touches the skin surface. External electromagnetic field generates the internal temperature field, which can be modelled by using the volumetric internal heat sources in the tissue domain (this source function constitutes one of components of the Pennes equation). In the paper, both BEM application to coupled bioheat transfer problems and numerical results of computations are theoretically considered. The successive examples show the different input data determining the electromagnetic field parameters.

[1]  E. Majchrzak,et al.  Numerical estimation of burn degree of skin tissue using the sensitivity analysis methods , 2003 .

[2]  Weizhong Dai,et al.  Optimal temperature distribution in a 3D triple-layered skin structure embedded with artery and vein vasculature and induced by electromagnetic radiation , 2007 .

[3]  Ewa Majchrzak,et al.  Sensitivity of the skin tissue on the activity of external heat sources , 2003 .

[4]  G. T. Martin,et al.  Thermal model for the local microwave hyperthermia treatment of benign prostatic hyperplasia , 1992, IEEE Transactions on Biomedical Engineering.

[5]  Denis Lemonnier,et al.  Three-dimensional modelling and optimisation of thermal fields induced in a human body during hyperthermia , 2002 .

[6]  L.X. Xu,et al.  Quantification of the 3-D electromagnetic power absorption rate in tissue during transurethral prostatic microwave thermotherapy using heat transfer model , 1998, IEEE Transactions on Biomedical Engineering.

[7]  Steven L. Jacques,et al.  Nonlinear finite-element analysis of the role of dynamic changes in blood perfusion and optical properties in laser coagulation of tissue , 1996 .

[8]  Carlos Alberto Brebbia,et al.  Boundary Elements: An Introductory Course , 1989 .

[9]  G. Hahn,et al.  Treatment of superficial human neoplasms by local hyperthermia induced by ultrasound , 1979, Cancer.

[10]  Jing Liu,et al.  Boundary information based diagnostics on the thermal states of biological bodies , 2000 .

[11]  K. Kuroda,et al.  An inverse method to optimize heating conditions in RF-capacitive hyperthermia , 1996, IEEE Transactions on Biomedical Engineering.

[12]  D. Torvi,et al.  A finite element model of skin subjected to a flash fire. , 1994, Journal of biomechanical engineering.