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Abstract #2177

Smart MetaBox: Metamaterial arrangement for volume-homogeneous SNR enhancement

Dennis Philipp1,2, Endri Stoja3, Simon Konstandin1, Robin Wilke1, Diego Betancourt3, Thomas Bertuch3, Juergen Jenne1,4, Reiner Umathum1,4, and Matthias Guenther1,2
1Fraunhofer MEVIS, Bremen, Germany, 2University of Bremen, Bremen, Germany, 3Fraunhofer FHR, Wachtberg, Germany, 4DKFZ, Heidelberg, Germany


A metamaterial arrangement that encloses a volume "metaBox" is shown to yield a significant and volume-homogeneous SNR enhancement in 3T MRI. Due to the integration of non-linear components, the structure self-detunes in Tx whilst being resonant in Rx. Fine-tuning capabilities are included in two different prototypes via (i) a manually trimmable capacitor and (ii) a Bluetooth-controlled digital capacitor that allows for a wireless interface. On-bench characterization as well as MRI experiments verify the functionality of the device. Thus, the metaBox is ideally suited for, e.g., imaging of extremities.

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