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

"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 th...

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Detalles Bibliográficos
Autores principales: Mancino, Axel, Milano, Federico E., Martín-Bertuzzi, Fiorella, Yampolsky, C. G., Ritacco, Lucas E., Risk, Marcelo
Formato: Artículos de Publicaciones Periódicas acceptedVersion
Lenguaje:Español
Publicado: info
Materias:
CALIBRACION
CAMPOS MAGNETICOS
MAPEO CEREBRAL
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/3261
Aporte de:
Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-3261
record_format dspace
spelling I32-R138-123456789-32612022-12-07T13:06:34Z 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 CALIBRACION CAMPOS MAGNETICOS MAPEO CEREBRAL "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." info:eu-repo/semantics/embargoedAccess/2021-12-10 2020-12-17T19:48:24Z 2020-12-17T19:48:24Z 2020 Artículos de Publicaciones Periódicas info:eu-repo/semantics/acceptedVersion 0140-0118 http://ri.itba.edu.ar/handle/123456789/3261 es info:eu-repo/semantics/altIdentifier/doi/10.1007/s11517-020-02156-2 application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Español
topic CALIBRACION
CAMPOS MAGNETICOS
MAPEO CEREBRAL
spellingShingle CALIBRACION
CAMPOS MAGNETICOS
MAPEO CEREBRAL
Mancino, Axel
Milano, Federico E.
Martín-Bertuzzi, Fiorella
Yampolsky, C. G.
Ritacco, Lucas E.
Risk, Marcelo
Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
topic_facet CALIBRACION
CAMPOS MAGNETICOS
MAPEO CEREBRAL
description "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."
format Artículos de Publicaciones Periódicas
acceptedVersion
author Mancino, Axel
Milano, Federico E.
Martín-Bertuzzi, Fiorella
Yampolsky, C. G.
Ritacco, Lucas E.
Risk, Marcelo
author_facet Mancino, Axel
Milano, Federico E.
Martín-Bertuzzi, Fiorella
Yampolsky, C. G.
Ritacco, Lucas E.
Risk, Marcelo
author_sort Mancino, Axel
title Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
title_short Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
title_full Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
title_fullStr Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
title_full_unstemmed Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
title_sort obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
publishDate info
url http://ri.itba.edu.ar/handle/123456789/3261
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