Finite-Element Analysis of Temperature Increase in Vascularized Biological Tissues Exposed to RF Sources

Author

De Santis, V. ; Feliziani, M. ; Maradei, F. ; Buccella, C.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of L´´Aquila, L´´Aquila

Volume

45

Issue

3

fYear

2009

fDate

3/1/2009 12:00:00 AM

Firstpage

1682

Lastpage

1685

Abstract

A new model of numerical dosimetry is proposed for RF exposure. First, the specific absorption rate (SAR) is computed. Then, the heat transfer governed by the bio-heat equation with convection term is numerically solved by a finite-element method (FEM) procedure considering the discrete vascular model of the perfused tissue. By some manipulations of the FEM equations and by generating an adequate FEM mesh, it is possible to solve the thermal convection in the blood vessels considering a one-dimensional domain embedded in the fully three-dimensional domain where only the thermal diffusion is analyzed.

Keywords

biological effects of radiation; biological tissues; biothermics; dosimetry; finite element analysis; heat transfer; RF sources; bioheat equation; finite element analysis; heat transfer; numerical dosimetry; specific absorption rate; temperature increase; vascularized biological tissues; Bio-heat equation; discrete vascular model; finite-element method (FEM); numerical dosimetry;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2012781

Filename

4787478