Combined use of transcranial magnetic stimulation and metal electrode implants: a theoretical assessment of safety considerations
Identifieur interne : 001326 ( Main/Exploration ); précédent : 001325; suivant : 001327Combined use of transcranial magnetic stimulation and metal electrode implants: a theoretical assessment of safety considerations
Auteurs : Laleh Golestanirad [Canada, Suisse] ; Hossein Rouhani [Canada] ; Behzad Elahi [Canada] ; Kamal Shahim [Suisse] ; Robert Chen [Canada] ; Juan R. Mosig [Suisse] ; Claudio Pollo [Suisse] ; Simon J. Graham [Canada]Source :
- Physics in Medicine and Biology [ 0031-9155 ] ; 2012-12-07.
Abstract
This paper provides a theoretical assessment of the safety considerations encountered in the simultaneous use of transcranial magnetic stimulation (TMS) and neurological interventions involving implanted metallic electrodes, such as electrocorticography. Metal implants are subject to magnetic forces due to fast alternating magnetic fields produced by the TMS coil. The question of whether the mechanical movement of the implants leads to irreversible damage of brain tissue is addressed by an electromagnetic simulation which quantifies the magnitude of imposed magnetic forces. The assessment is followed by a careful mechanical analysis determining the maximum tolerable force which does not cause irreversible tissue damage. Results of this investigation provide useful information on the range of TMS stimulator output powers which can be safely used in patients having metallic implants. It is shown that conventional TMS applications can be considered safe when applied on patients with typical electrode implants as the induced stress in the brain tissue remains well below the limit of tissue damage.
Url:
DOI: 10.1088/0031-9155/57/23/7813
Affiliations:
- Canada, Suisse
- Canton de Berne, Canton de Vaud, Ontario
- Berne, Lausanne, Toronto
- Université de Toronto
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Metal implants are subject to magnetic forces due to fast alternating magnetic fields produced by the TMS coil. The question of whether the mechanical movement of the implants leads to irreversible damage of brain tissue is addressed by an electromagnetic simulation which quantifies the magnitude of imposed magnetic forces. The assessment is followed by a careful mechanical analysis determining the maximum tolerable force which does not cause irreversible tissue damage. Results of this investigation provide useful information on the range of TMS stimulator output powers which can be safely used in patients having metallic implants. It is shown that conventional TMS applications can be considered safe when applied on patients with typical electrode implants as the induced stress in the brain tissue remains well below the limit of tissue damage.</div></front></TEI><affiliations><list><country><li>Canada</li><li>Suisse</li></country><region><li>Canton de Berne</li><li>Canton de Vaud</li><li>Ontario</li></region><settlement><li>Berne</li><li>Lausanne</li><li>Toronto</li></settlement><orgName><li>Université de Toronto</li></orgName></list><tree><country name="Canada"><region name="Ontario"><name sortKey="Golestanirad, Laleh" sort="Golestanirad, Laleh" uniqKey="Golestanirad L" first="Laleh" last="Golestanirad">Laleh Golestanirad</name></region><name sortKey="Chen, Robert" sort="Chen, Robert" uniqKey="Chen R" first="Robert" last="Chen">Robert Chen</name><name sortKey="Elahi, Behzad" sort="Elahi, Behzad" uniqKey="Elahi B" first="Behzad" last="Elahi">Behzad Elahi</name><name sortKey="Graham, Simon J" sort="Graham, Simon J" uniqKey="Graham S" first="Simon J" last="Graham">Simon J. Graham</name><name sortKey="Rouhani, Hossein" sort="Rouhani, Hossein" uniqKey="Rouhani H" first="Hossein" last="Rouhani">Hossein Rouhani</name></country><country name="Suisse"><region name="Canton de Vaud"><name sortKey="Golestanirad, Laleh" sort="Golestanirad, Laleh" uniqKey="Golestanirad L" first="Laleh" last="Golestanirad">Laleh Golestanirad</name></region><name sortKey="Mosig, Juan R" sort="Mosig, Juan R" uniqKey="Mosig J" first="Juan R" last="Mosig">Juan R. Mosig</name><name sortKey="Pollo, Claudio" sort="Pollo, Claudio" uniqKey="Pollo C" first="Claudio" last="Pollo">Claudio Pollo</name><name sortKey="Shahim, Kamal" sort="Shahim, Kamal" uniqKey="Shahim K" first="Kamal" last="Shahim">Kamal Shahim</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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