Abstract
Hyperthermia treatment is one of the physical treatments of cancer. It is based on the clinical fact that the cancer cells are weaker than normal tissue cells in the temperature range of 42-43 degrees Celsius. We have proposed the resonant cavity applicator for non-invasive hyperthermia treatments. In our previous study, we have already confirmed that the effectiveness of this applicator. However this applicator does not have the monitoring system to detect the location and size of a heated object and to measure the temperature distribution inside a human body. To overcome this problem, we proposed an ultrasound monitoring system using a diagnostic ultrasound imaging system. In this paper, we present a basic study of measuring temperature inside a human body using the diagnostic ultrasound imaging system. First, the method of measuring temperature was presented. Second, the experimental devices were presented. Third, the results of heating experiments and measured temperature from ultrasound images were presented. From these results, it was confirmed that the proposed monitoring system was useful for effective hyperthermia treatments.
