Abstract #3478
Eight-channel ICE-decoupled monopole RF array for ultrahigh field human head MR imaging
Xinqiang Yan 1,2 , Long Wei 2 , Rong Xue 1 , and Xiaoliang Zhang 3
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
Traditional decoupling methods face technical challenges
in designing monopole arrays. In this study, we
investigate the possibility of using the induced current
elimination (ICE) decoupling for cylindrical shaped
monopole arrays. To evaluate the method, an
eight-channel transceiver monopole array, suitable for
human head imaging at 7T, with the ICE decoupling method
was built and comparatively investigated. Studies
demonstrated that isolation between adjacent monopole
elements was improved from -7.1 dB to better than -25 dB
by using this method. Compared with the monopole array
using no decoupling methods, the ICE-decoupled monopole
array had a higher SNR and better parallel imaging
ability.
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