Thermal dose optimization in a living tissue with conjugate gradient method

Abstract

Thermal dose indicates the level of thermal lesion. During a thermal therapy, desired thermal dose distribution along a tissue can be obtained by proper manipulation of heat source. In this study, the inverse heat transfer problem is applied to estimate the external heat source in a living tissue for a desired thermal dose. The inverse method is the conjugate gradient method with the adjoint problem. The inverse method is function estimation type, since there is not any information exists about the distribution form of the external heat source. The results show that the heat source is estimated precisely for the test cases discussed in this paper.