Real-Time Numerical Dosimetry of Low-Frequency Electromagnetic Fields by Using Multipoles

Abstract

Computation of the internal electric field induced in the human body by low-frequency power systems is time consuming. We compute an approximate solution in nearly-real time by using a reduced basis for the internal field. The basis is computed once (off-line) by approximating the source by multipoles, the coefficients of which can be computed for any position of the human body thanks to analytic translation and rotation formulas. The results are validated with respect of Finite Element (FEM) computation.

GPU-accelerated body-internal electric field exposure simulation using low-frequency magnetic field sampling points

“…The work by Tavernier et al (2021) declares that an “approximated solution in nearly real-time by using a reduced basis” with an error in the organs of about 5% can be achieved. However, the space in which the magnetic field is calculated must not contain electrical currents or magnetic materials.…”

A fast tool for the parametric analysis of human body exposed to LF electromagnetic fields in biomedical applications

“…The computation of the electromagnetic (EM) fields generated within the human body by an external source, which can be a system of coils [1] or a system of electrodes [2], is required by different biomedical applications. For instance, Maxwell's equations must be solved in the human body when evaluating the exposure to the EM fields produced by a magnetic resonance imaging (MRI) scanner [1,3,4]; when planning an oncological hyperthermia treatment driven by magnetic fields [5]; when studying Transcranial Magnetic Stimulation (TMS) for the treatment of neurodegenerative diseases [6,7]; or, when assessing the exposure to environmental EM fields [8,9,10,11,12,13,14,15].…”