Improvement of the dual-heat-flux method for deep body temperature measurement based on a finite element model.

Based on finite element method, this study was dedicated to improve the performance of the newly proposed dual-heat-flux method (DHF) for noninvasive deep body temperature (DBT) measurement. This study focused mainly on the dimensions, e.g., the height and radius, of the probe of DHF to improve its performance, in terms of the measurement depth beneath the skin. This paper was also engaged in confirmation of the improved probe's performance on a physiological significant temperature range, 35 to 40 °C. The results showed that a probe with lower in height and larger in radius would have better performance. It suggests that we should reduce the height of the probe to half of the original and keep the radius unchanged for a better performance.