Non-Invasive Measurement of Temperature Distributions During Hyperthermia Treatments using Ultrasound B-mode Images

:This paper describes a new method of non-invasive temperature measurement using ultrasound B-mode images. In the clinic, a real-time monitoring system to acquire the temperature distributions around the targeted area is necessary for effective hyperthermia treatments. We proposed the temperature measurement method by image processing techniques. The method of measuring temperature distributions was based on the thermal dependence of local change in speed of sound and thermal expansion. In this paper,we that the proposed method is useful for effective hyperthermia treatments.