DISTRIBUTION OF HEATING POTENTIAL IN AN ECCENTRIC SPHERES MODEL OF A CRANIAL STRUCTURE Available to Purchase

We determine the electromagnetic (EM) field in a layered eccentric spheres model of the human head. The model allows for eccentricity between the inner and the outer sets of the concentric spherical layers that simulate brain and skull. Excitation is provided by an incident plane EM wave or by a nearby dipole. The induced EM field is determined through a compact formulation based on indirect mode matching. Numerical results are presented for models adapted to adult and infant heads. Interest is in the RF/microwave absorption characteristics of the head. Conditions for hot spot occurence are investigated too. Applications include EM hyperthermia and cellular phone side‐effects.