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Abstract #1306

Evaluation of ICE and capacitive decoupling methods using in 8-channel loop array coils at 7T

Xinqiang Yan 1,2 , Xiaoliang Zhang 3,4 , Chuangxin Ma 2 , Long Wei 2 , and Rong Xue 1

1 State Key Laboratory of Brain and Cognitive Science, Beijing MRI Center for Brain Research, Insititute 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, San Francisco, California, United States, 4 UCSF/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco, California, United States

In this study, two eight-channel transmit/receive volume-type loop array coils were built for human head imaging at 7T by using the ICE decoupling method and capacitive decoupling method, respectively. We have conducted research on comparison between these arrays in terms of S-parameter matrix, SNR and parallel imaging capability. Compared with the capacitively decoupled array, the ICE-decoupled array has better isolation between adjacent coil elements, higher SNR at periphery area and better parallel imaging capability. Additionally, ICE decoupling method is more robust that decoupling loops do not need to be retuned for different loads.

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