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Thermal time constants of (a–c) skin (τ in Equation (9)) and (d–f) brain (τ + τD in Equation (9)) in human models for each peak SAR averaged over 10-g tissue. The distances between the skin surface and the dipole antenna d were set to (a,d) 5, (b,e) 15, and (c,f) 25 mm. Each point represents the average value and error bar showing the standard deviation (n = 4). For comparison, the temperature elevation of rat brain tissue was also plotted at the 5-mm distance.
