Modelling of induced electric fields based on incompletely known magnetic fields

Ilkka Laakso*, Valerio De Santis, Silvano Cruciani, Tommaso Campi, Mauro Feliziani

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

Determining the induced electric fields in the human body is a fundamental problem in bioelectromagnetics that is important for both evaluation of safety of electromagnetic fields and medical applications. However, existing techniques for numerical modelling of induced electric fields require detailed information about the sources of the magnetic field, which may be unknown or difficult to model in realistic scenarios. Here, we show how induced electric fields can accurately be determined in the case where the magnetic fields are known only approximately, e.g. based on field measurements. The robustness of our approach is shown in numerical simulations for both idealized and realistic scenarios featuring a personalized MRI-based head model. The approach allows for modelling of the induced electric fields in biological bodies directly based on real-world magnetic field measurements.

Original languageEnglish
Pages (from-to)6567-6578
Number of pages12
JournalPhysics in Medicine and Biology
Volume62
Issue number16
DOIs
Publication statusPublished - 28 Jul 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • finite-element method
  • human exposure
  • induced electric field
  • transcranial magnetic stimulation
  • vector potential

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