Numerical Study of Differential Temperature Measurement in Human Muscle Tissue using UWB Radar

This paper deals with the numerical study of the differential temperature measurement by means of ultra-wide band (UWB) radar in the muscle tissue. The temperature range of interest corresponds to the hyperthermia tumor treatment (up to 45 °C). A 1D model based on Mason graphs and a simplified sandwich structure is introduced to observe the expected usable frequency band and differential signal dependence on the temperature change. Results show a linear dependence of the received radar signals on temperature change in the human muscle phantom. We numerically proved that it is possible to detect temperature changes inside the UWB signals backscattered from the heated region.