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Abstract #3118

Magnetic wall decoupling for dipole transceiver array for MR imaging: a feasibility test

Xinqiang Yan 1,2 , Xiaoliang Zhang 3 , Long Wei 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

Dipole antenna arrays have been applied for ultrahigh field MRI to obtain better SNR gain at the deep area of human tissues. However, there is no suitable decoupling methods proposed for dipole coil arrays in MRI. In this study, we investigated the possibility and performance of magnetic wall (MW) decoupling technique in dipole array designs. A two-channel MW decoupled dipole array was designed, constructed and analyzed experimentally. Both the bench test and experimental results indicate that the MW decoupling is a promising solution to reducing the electromagnetic coupling of dipole arrays, consequently improving their performance in SNR and parallel imaging.

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