Abstract #1861
MR safety investigation of RF heating of a generic wire-shaped device immersed to a human body simulating medium at 63.58 MHz (1.5 T MRI-equivalent)
Mahdi Abbasi 1,2 , Gregor Schaefers 1 , Amin Douiri 1 , and Daniel Erni 2
1
MR:comp GmbH, Gelsenkirchen, NRW, Germany,
2
General
and Theoretical Electrical Engineering (ATE), University
of Duisburg-Essen, Duisburg, NRW, Germany
The quantitative analysis of induced E-field due to
presence of medical catheter implants during MRI become
particularly critical if the implant is only semi
immersed into the human body where a part remains
outside. As examples, deep brain electrodes are partly
immersed into the brain and various EEG and ECG
electrodes as zero immersing configurations. As the
result of the numerical simulations, SAR distribution in
the surroundings of the tip of the generic implants is
obtained for 3 configurations under test: partly
immersed insulated/uninsulated and fully immersed
uninsulated generic implant. Temperature measurements
are done for all worst case lengths and two adjacent
lengths in an in-house 64 MHz RF laboratory system.
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