Effect of SAR average mass on correlation with temperature elevation in Japanese head model

This study investigates the correlation between temperature elevation and spatial-average SAR (specific absorption rate) in a Japanese head model due to a dipole antenna. The frequencies considered are in the range between 800 MHz and 3 GHz. Our attention focuses on the SAR average mass maximizing the correlation with local temperature elevation. Our computational results suggest that an appropriate average mass of SAR does not exist over wide frequencies, which is attributed to the frequency-dependent penetration depth of microwaves. Added to this, the heat evolved in the pinna played an important role on the correlation between spatial-average SAR and temperature elevation. Furthermore, the effect of blood perfusion rate on this correlation was confirmed to be significant, as predicted in our previous study.