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Abstract #4322

Folded four-ring double-tuned birdcage coil design

YongHyun Ha1, Chang-Hoon Choi1, and N. Jon Shah1,2

1Institute of Neuroscience and Medicine - 4, Forschungszentrum Juelich, Juelich, Germany, 2Faculty of Medicine, Department of Neurology, JARA, RWTH Aachen University, Aachen, Germany

In this work, we designed a double-tuned 1H/23Na four-ring birdcage coil with a modification that entailed folding the outer end-rings by 90 degrees to overcome the available space limitation. And 23Na SNR of the folded four-ring birdcage coil reached more than 93% of that obtained with the single-tuned birdcage coil. One benefit of folded four-ring birdcage coil compared to conventional four-ring birdcage coil is that there is no space restriction. This helps to build double-tuned coils that have a smaller diameter, leading to higher filling factors.

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