Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
- Mancino, Axel Victor Andrés
- Milano, Federico Edgardo
- Bertuzzi, F. Martin
- Yampolsky, C. G.
- Ritacco, Lucas
- Risk, Marcelo
DOIAbstract
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 resolut...
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