Localized hyperthermia by means of a paired-coil configuration: Calculation of current distributions in cubical model

A method of localized hyperthermia of deep tissues by means of paired-coil arrays is proposed. The basic idea is to concentrate induced eddy currents in the vicinity of target tumors locally by paired coils positioned outside the body. Two coaxial pairs of coils are positioned on the surface of the body in parallel with each other in such a manner that the magnetic fields pass through the body in opposite directions around the target focus. To demonstrate the effectiveness of the method, spatial distributions of induced eddy currents are obtained in a cubical model by a finite element method.