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Couple Electromagnetic and Neuronal Dynamics Simulation of Gradient Coil Switching Induced Nerve Stimulation

Ioannis Vogiatzis Oikonomidis (Institutionen för signaler och system) ; Esra Neufeld ; Johanna Wolf ; Deepika Sharma ; Yngve Hamnerius (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Niels Kuster
Proceedings: Joint Annual Meeting ISMRM-ESMRMB 2014
SMRT 23rd Annual Meeting 10-16 May, 2014 Milan Italy p. paper 1388. (2014)
[Konferensbidrag, poster]

Nerve stimulation by rapidly switching gradient coils is a safety concern in MR. An EM and thermal simulation platform has been coupled with a neuronal dynamics modeling code, to investigate such interactions in realistic anatomical models. A locally temperature dependent variant of the SENN model, commonly employed for safety threshold assessment, has been developed. Modeling of sciatic nerve stimulation by gradient coil switching, considering the impact of RF birdcage coil induced heating, showed that the model anisotropy, the field variation along the nerve and local temperature have a relevant impact that can be studied using the coupled EM-neuron simulation platform.

Nyckelord: NMR magnetic field



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Denna post skapades 2015-01-27.
CPL Pubid: 211572

 

Institutioner (Chalmers)

Institutionen för signaler och system (1900-2017)
Institutionen för signaler och system, Biomedicinsk elektromagnetik (2006-2017)

Ämnesområden

Livsvetenskaper
Elektroteknik
Diagnostisk radiologi

Chalmers infrastruktur