Thermal Dosimetry and Temperature Measurements1
نویسنده
چکیده
A crucial ingredient of any hyperthermia procedure is the accurate measurement of achieved temperature. In this paper, we present some accuracy and resolution suggestions and address the problem of temperature measurements when elec tromagnetic energy is used as the mode of heating. In such cases, conventional metallic thermometers can cause severe errors due to reradiated fields, high internal heating, and elec tronic interference. To avoid these problems, several groups have developed either high-resistance lead thermometers or optical-fiber probes using a variety of sensors, including bire fringent and semiconductor crystals. A new noninvasive ap proach uses ultrasound-computed tomography and relies upon the change in the speed of sound versus temperature to achieve maps of internal tissue temperature.
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