MRI STaR GmbH

Gelsenkirchen, Germany

MRI STaR GmbH

Gelsenkirchen, Germany
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Kozlov M.,MR Computer GmbH | Schaefers G.,MR Computer GmbH | Schaefers G.,MRI STaR GmbH
2016 IEEE Conference on Antenna Measurements and Applications, CAMA 2016 | Year: 2016

At 64 and 127 MHz for insulated stainless steel wires with an insulation diameter of 1.46 mm, we evaluated the dependence of RF-induced power deposited at a hotspot (p) on wire and tip electrode diameters. The lead electrical length, the transfer functions obtained with 3-D electromagnetic simulations and the power deposition p significantly depended on wire diameter and substantially on tip electrode diameter. Discrepancy of results was up to 1280% at 64 MHz and up to 3200% at 127 MHz. © 2016 IEEE.


Kozlov M.,MR Computer GmbH | Schaefers G.,MR Computer GmbH | Schaefers G.,MRI STaR GmbH
2016 IEEE Conference on Antenna Measurements and Applications, CAMA 2016 | Year: 2016

At 64 and 127 MHz for eight electrode leads with an insulation diameter of 1.46 mm, we evaluated the dependence of RF-induced power (p) generated by a plane wave incident field at electrodes on: distance between leads, electrical properties of surrounding media. At both frequencies and for all investigated surrounding media three cases were observed: p remained practically unaffected due to presence of the second lead, p was reduced up to 90%, p was increased by as much as 3. © 2016 IEEE.

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