A Meshfree Solver for the MEG Forward Problem

Salvatore Ganci, Guido Ala, Elisa Francomano, Michael J. Mccourt, Michael J. Mccourt, Gregory E. Fasshauer

Risultato della ricerca: Articlepeer review

20 Citazioni (Scopus)

Abstract

Noninvasive estimation of brain activity via magnetoencephalography (MEG) involves an inverse problem whose solution requires an accurate and fast forward solver. To this end, we propose the Method of Fundamental Solutions (MFS) as a meshfree alternative to the Boundary Element Method (BEM). The solution of the MEG forward problem is obtained, via the Method of ParticularSolutions (MPS), by numerically solving a boundary value problem for the electric scalar potential, derived from the quasi-stationary approximation of Maxwell’s equations. The magnetic field is then computed by the Biot-Savart law. Numerical experiments have been carried out in a realistic single-shell head geometry. The proposed solver is compared with a state-of-the-art BEM solver. A good agreement and a reduced computational load show the attractiveness of the meshfree approach.
Lingua originaleEnglish
Numero di pagine4
RivistaIEEE Transactions on Magnetics
Volume51
Stato di pubblicazionePublished - 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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