Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements

Mancino, Axel; Milano, Federico E.; Martín-Bertuzzi, Fiorella; Yampolsky, C. G.; Ritacco, Lucas E.; Risk, Marcelo

Artículo de Publicación Periódica:
Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements

dc.contributor.author	Mancino, Axel
dc.contributor.author	Milano, Federico E.
dc.contributor.author	Martín-Bertuzzi, Fiorella
dc.contributor.author	Yampolsky, C. G.
dc.contributor.author	Ritacco, Lucas E.
dc.contributor.author	Risk, Marcelo
dc.date	info:eu-repo/semantics/embargoedAccess/2021-12-10
dc.date.accessioned	2020-12-17T19:48:24Z
dc.date.available	2020-12-17T19:48:24Z
dc.date.issued	2020
dc.description.abstract	"Currently, simulations of the induced currents in the brain produced by transcranial magnetic stimulation (TMS) are used to elucidate the regions reached by stimuli. However, models commonly found in the literature are too general and neglect imperfections in the windings. Aiming to predict the stimulation sites in patients requires precise modeling of the electric field (E-field), and a proper calibration to adequate to the empirical data of the particular coil employed. Furthermore, most fabricators do not provide precise information about the coil geometries, and even using X-ray images may lead to subjective interpretations. We measured the three components of the vector magnetic field induced by a TMS figure-8 coil with spatial resolutions of up to 1 mm. Starting from a computerized tomography-based coil model, we applied a multivariate optimization algorithm to automatically modify the original model and obtain one that optimally fits the measurements. Differences between models were assessed in a human brain mesh using the finite-elements method showing up to 6% variations in the E-field magnitude. Our calibrated model could increase the precision of the estimated E-field induced in the brain during TMS, enhance the accuracy of delivered stimulation during functional brain mapping, and improve dosimetry for repetitive TMS."	en
dc.identifier.issn	0140-0118
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/3261
dc.language.iso	es	es
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1007/s11517-020-02156-2
dc.subject	CALIBRACION	es
dc.subject	CAMPOS MAGNETICOS	es
dc.subject	MAPEO CEREBRAL	es
dc.title	Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Mancino, Axel. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Mancino, Axel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Mancino, Axel. Instituto de Medicina Traslacional e Ingeniería Biomédica; Argentina.
itba.description.filiation	Fil: Milano, Federico E. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Martín-Bertuzzi, Fiorella. Hospital Italiano de Buenos Aires; Argentina.
itba.description.filiation	Fil: Yampolsky, C. G. Hospital Italiano de Buenos Aires; Argentina.
itba.description.filiation	Fil: Ritacco, Lucas E. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Ritacco, Lucas E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Risk, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.