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Abstract #0746

Effect of Coaxial Feed Cables on the Performance of Loop & Dipole Arrays at Ultra High Frequencies

Myung Kyun Woo1, Lance DelaBarre1, Russell Lagore1, Andrea Grant1, Steve Jungst1, Yigitcan Eryaman1, Kamil Ugurbil1, and Gregor Adriany1
1Center for Magnetic Resonance Research, Minneapolis, MN, United States

We designed and built three elliptically arranged 8- and 16-channel transceiver dipole and loop arrays for the human head applications and evaluated the influence of coaxial feed cables on the overall array performance. The influence of coaxial feed cables was evaluated in simulation and compared against actual built arrays in terms of B1+ and SAR efficiency. For all three arrays we consistently observed ~30 % performance reduction compared to the “ideal” coil with no coaxial cables.

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