Microwave antennas for intracavitary thermal therapy

- Numerical calculations and animal experiment -

Abstract

Up to now, the authors have been studying various thin antennas for microwave thermal therapies. Especially, a coaxial-slot antenna aiming at intracavitary heating for bile duct carcinoma has been developed. In this paper, first, heating performances of the antenna are estimated by use of numerical calculations. Moreover, temperature rise around the antenna, which is inserted into the bile duct, are measured using the living swine to find a cooling effect of blood flow. As a result of the investigations, the possibility of this treatment by use of the coaxial-slot antenna could be confirmed.