FMag - Fast Computation of Static Magnetic Field Perturbation due to Inhomogeneous Media
Timchenko V, Neufeld A, Boag A, Letrou C
Tel Aviv University
A novel computational scheme (FMag) is proposed for fast evaluation of the magnetic field, Bo, perturbation due to varying magnetic permeabilities of the biological tissues. The computational task is formulated as an integral equation for the perturbation of the magnetic field relative to the externally impressed field, where the magnetic permeability variation serves as a source term. Solution of the integral equation is evaluated in just one iteration comprising FFT-accelerated convolution of the source term with the Greens function. The proposed technique is compared with analytic solution and commercial software.