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Abstract #0628

A Four Channel Transmit Receive "Loopole" Array for Spine Imaging at 7.0 Tesla

Karthik Lakshmanan 1,2 , Martijn Cloos 1,2 , Ryan Brown 1,2 , Timothy Shepherd 3,4 , and Graham C Wiggins 1,2

1 The Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, Newyork, NY, United States, 2 The Center for Advanced Imaging Innovation and Research (CAI2R),Department of Radiology, New York University School of Medicine, Newyork, NY, United States, 3 Radiology, NYU Langone Medical Center, NY, United States, 4 The Center for Advanced Imaging Innovation and Research (CAI2R),Department of Radiology, New York University School of Medicine, NY, United States

A loop coil with a highly non-uniform current distribution can capture loop like and dipole like fields. This loopole element provides the opportunity to tailor both the orientation and the intensity of its asymmetric current to achieve improved B1+ efficiency or SNR. In this work the feasibility of using loopole elements as building blocks to create transceiver arrays is explored. A novel split four-element loopole array with two anterior and two posterior elements was modeled and constructed. The array was used to image the human spine at 7.0T. The loopole array exhibited substantial performance improvements over published spine array designs.

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