An Impedance Method to Calculate Currents Induced in Biological Bodies Exposed to Quasi-Static Electromagnetic Fields

We have developed a method of modeling biological bodies with an impedance network which is useful in finding induced currents and heating patterns resulting from exposure to VLF, LF, and MF electromagnetic radiation. The method is extremely fast as compared with the method of moments, and this allows the solution of problems involving 104-105 cells inside the body. The approach does not require individual cells in the body to be regularly shaped, and thus allows accurate modeling of very thin layers, such as the skin, as well as very irregular geometries. Solutions are presented for a parallelepiped model of approximate man dimensions and for a two-dimensional (2-D) cross section of the human torso.