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Abstract #1808

Hybrid monopole/loop coil array for human head parallel MR imaging at 7T

Xinqiang Yan 1,2 , Xiaoliang Zhang 3 , Long Wei 2 , Yuqian Liu 2 , and Rong Xue 1

1 State Key Laboratory of Brain and Cognitive Science, Beijing MRI Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, Beijing, China, 2 Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, Beijing, China, 3 Department of Radiology and Biomedical Imaging, University of California San Francisco and UCSF/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco, California, United States

In this study, a hybrid monopole/loop technique which could combine the advantages of loop arrays and monopole arrays was proposed. To investigate this technique, a hybrid transceiver coil array containing 4 monopole channels and 4 loop channels was developed for human head imaging at 7T. Compared with the monopole-only and loop-only arrays, the proposed hybrid array has higher SNR and better parallel imaging performance. With increased independent transmit channels, the hybrid array promises additional degrees of freedom for the RF shimming and parallel transmission (pTx), which might be advantageous to provide more homogeneous transmit fields.

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