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Abstract #3521

An investigation of coupling and loading effects for adaptive coil design

Barbara Dornberger1, Markus Vester1, Robert Rehner1, Michael Zenge2, Riccardo Lattanzi3, and Graham Wiggins3

1Siemens Healthcare GmbH, Erlangen, Germany, 2Siemens Medical Solutions USA, Inc., Malvern, PA, United States, 3Department of Radiology, New York University School of Medicine, Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, New York, NY, United States

This abstract examines the feasibility of an adaptive coil design to overcome the disadvantage of poorly loaded and non-fitting local coils. The coil adjusts to the circumference of e.g. a knee by changing the overlap between coil elements. Through bench measurements and simulation we investigated the tradeoff between maintaining optimal coil loading and signal-to-noise ratio (SNR) losses due to coupling. Broadband matching was considered to reduce SNR degradation. Although results show that an adaptive coil can minimize coil losses, the non-ideal overlap of this design leads to a larger SNR degradation than the coil losses of a non-perfect fitting coil.

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