Abstract #4889
A Novel Method for MRI Safe Lead Design
Volkan Acikel 1,2 and Ergin Atalar 1,2
1
Department of Electrical and Electronics
Engineering, Bilkent University, Ankara, Turkey,
2
National
Magnetic Resonance Research Center (UMRAM), Ankara,
Turkey
In this study a novel method for designing MRI safe
leads using Modified Transmission Line Method (MoTLiM)
is presented. SAR at the tip of a lead is formulated and
it is shown that by adjusting the wavenumber along the
lead SAR can be decrease significantly. A way to
increase wavenumber is multilayer wound leads. In
multilayer wound leads, resistance increases due to the
proximity effect and inductance increase due to the
number of windings. It is shown that by increasing
number of layers SAR can be decreased such that the
implant lead tip heating is no longer a significant
problem.
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