HIGH SPATIAL RESOLUTION ANALYSIS OF ELECTRIC CURRENTS INDUCED IN MAN BY ELF MAGNETIC FIELDS

摘要

This paper presents the formulation of the impedance network method that allows computation of the arbitrary injection currents on the boundary of a selected sub-region for an analysis of induced electric current distributions inside the human body exposed to extremely low frequency magnetic fields. The obtained formulation provides a high resolution modeling of a local region of interest without using an excessively large number of computational cells. The iterative equations for outer and inner nodes are derived in detail. Solutions for a double-layered sphere are then calculated to verify the derived equations. The errors involved in the calculation are also examined. To illustrate the method, its application to computations of the induced currents in the human head is described. [Vol. 9, No. 2 (1994), pp 127-134]