Calculation of EM power deposition for operator exposure to RF induction heaters

Calculations are presented for electromagnetic power deposition (specific absorption rates, or SARs) in an anatomically realistic model of the human torso for spatially varying leakage magnetic fields due to a 450 kHz RF induction heater. A previously described impedance method that neglects the effects of the operator´s body on the source, because of weak coupling, is used for the calculations. SARs on the order of a few μW/Kg are found for magnetic fields on the order of 1.8 A/m at the central plane of the model. This implies that fairly low SARs result from leakage magnetic fields on the order of 1-20 A/m that are typical of RF induction heaters