Articles techniques et présentations

The purpose of this paper is to illustrate the microwave coagulation therapy (MCT) that can be used mainly for the treatment of hepatocellular carcinoma. In this treatment invasive technique are used in which thin microwave coaxial antenna is inserted into the tumor and the microwave energy heats up the tumor to produce the coagulated region including the cancer cells. We have to heat the cancer cells up to at least 60°C above which the cells are coagulated. It is very difficult to estimate the properties of a certain antenna shape, due to complicated relationship between the geometry of the antenna & the electromagnetic fields. To evaluate the performance of any antenna, computer simulations based on various numerical techniques are used. Finite Element Method is an efficient technique used for performing analysis of complex structures allowing the flexibility in changing the shape of the antenna. This method consists of representing a given domain, however complex it may be by geometrically over which the approximation functions can be systematically derived. The Finite Element Method not only overcomes the shortcomings of the traditional analytical and numerical methods but it also endowed with the features of an effective computational technique. FEM models can provide users with quick, accurate solutions to multiple systems of differential equations.