Temperature Performance of A Scanned Microwave Hyperthermia System in Clinical Use

Abstract

An assessment of the clinical performance of a scanned microwave hyperthermia system is described. The system uses a computer controlled robot mechanism to scan a purpose-built microwave antenna over the treatment site following a pre-calculated trajectory. This provides control over local power deposition and enables uniform temperature profiles to be produced covering large surface areas. Temperature data recorded during a hyperthermia treatment sessions indicate that improved thermal uniformity can be achieved throughout the treatment volume compared with the performance of a static applicator. A typical patient treatment is described where a minimum temperature of 43°C was maintained during the active treatment period of 60 minutes with no excessive heating or patient discomfort.