Magnetic stimulation of the spine: the role of tissues and their modelling.
Title | Magnetic stimulation of the spine: the role of tissues and their modelling. |
Publication Type | Journal Article |
Year of Publication | 2010 |
Authors | Efthimiadis, K. G., Samaras T., & Polyzoidis K. S. |
Journal | Phys Med Biol |
Volume | 55 |
Issue | 9 |
Pagination | 2541-53 |
Date Published | 2010 May 7 |
ISSN | 1361-6560 |
Keywords | Electric Conductivity, Humans, Magnetic Field Therapy, Models, Biological, Reproducibility of Results, Spine, Time Factors |
Abstract | Numerical modelling of magnetic stimulation in the spine is a scarce subject in the literature, although it has been gaining clinical acceptance. In the present work we present the results from a simplified computational model of the spine. The results indicate that it is necessary to use a numerical technique for solving the problem, which takes into account tissue dispersion and both dielectric properties (conductivity and permittivity), since a difference of 14% in the induced electric fields was found when displacement currents were included. With respect to the role of tissues in stimulation efficiency, it was confirmed that water-rich tissues lead to a shielding effect of the spinal cord. However, this effect becomes smaller at the height of the intervertebral discs, resulting in an increase of the field inside the spine. |
DOI | 10.1088/0031-9155/55/9/008 |
Alternate Journal | Phys Med Biol |
PubMed ID | 20393231 |