An Evaluation of Radio Frequency Induced Power Deposition of Coaxial Leads with an Implant Model
Mikhail Kozlov1,2 and Gregor Schaefers1,3
1MR:comp GmbH, Gelsenkirchen, Germany, 2Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, 3Magnetic Resonance Institute for Safety, Technology and Research GmbH, Gelsenkirchen, Germany
We performed 3-D electromagnetic simulations of coaxial
leads and numerically obtained the lead models to evaluate power deposition
and the voltage induced at
the lead proximal end with the lead models. No correlation between peak volume loss density and deposited powers
at the tip and the ring was observed.
In some cases deposited power at the ring exceeded deposited power at the tip. However further extensive simulations of
induced heating behavior should be done before
final conclusions regarding coax lead design preferences are made.
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