title: Detailed 3D models of the induced electric field of transcranial magnetic stimulation coils.
abstract: Previous models neglected contributions from current elements spanning the full geometric extent of wires in transcranial magnetic stimulation (TMS) coils. A detailed account of TMS coil wiring geometry is shown to provide significant improvements in the accuracy of electric field (E-field) models. Modeling E-field dependence based on the TMS coil's wire width, height, shape and number of turns clearly improved the fit of calculated-to-measured E-fields near the coil body. Detailed E-field models were accurate up to the surface of the coil body (within 0.5% of measured) where simple models were often inadequate (up to 32% different from measured).
authors.affiliation: Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
authors.forename: F S
authors.initials: FS
authors.lastname: Salinas
authors.forename: J L
authors.initials: JL
authors.lastname: Lancaster
authors.forename: P T
authors.initials: PT
authors.lastname: Fox
mesh_terms: D004574:Electromagnetic Fields; D006801:Humans; D021621:Imaging, Three-Dimensional; D008280:Magnetics; D008954:Models, Biological; D050781:Transcranial Magnetic Stimulation