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We evaluated how magnetic resonance imaging robustness depends on dual-row transmit array geometry, head size, position of a head inside the array and array tuning condition. A clear winner was not found. For overlapped arrays, different tuning conditions resulted in larger peak-to-peak variation for circular polarization excitation, but B1+ (averaged over the volume of interest) decrease was as a...
We provide recommendations for simulation-driven design and work-flow for magnetic resonance imaging RF transmit-coil arrays. To enable final decisions on array construction, accurate knowledge is needed of how the array transmit and safety measures depend on the array geometry, RF component losses, and the tuning and excitation conditions. If strong evidence is provided that array safety excitation...
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