Calculation of Electromagnetic Energy Absorption in Prolate Spheroids by the Point Matching Method

The point matching method is used to calculate electromagnetic power absorption in tissue prolate spheroids irradiated by a plane wave. The calculation extends from the low-frequency region and well into the resonance region, but is restricted to spheroids of small eccentricity. A strong dependence of the absorption on the orientation and the polarization of the incident beam is found to occur, in agreement with previous experimental measurements on animals and phantom models.