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Abstract #4058

Feasibility study of volume RF coils constructed using coupled H-shaped dipole antennas for MR imaging at ultrahigh fields

Shasha Yue1, Zhe Wang1, Cheng Fang1, Nan Li2, Yan Hou1, Kun Zhang1, Rong Xue3,4,5, Ye Li2,6, and Xiaoliang Zhang7
1Institute of Biophysics, Chinese Academy of Sciences, Beijing, China, 2Lauterbur Imaging Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China, 3State Key Laboratory of Brain and Cognitive Science, Beijing MRI Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China, 4University of Chinese Academy of Sciences, Beijing, China, 5Beijing Institute for Brain Disorders, Beijing, China, 6Shenzhen Key Laboratory for MRI, Shenzhen, China, 7Department of Biomedical Engineering, State University of New York, Buffalo, NY, United States, Buffalo, NY, United States

The feasibility of constructing the non-array volume RF coil using the coupled dipole antennas has been explored. The electromagnetic coupling among the dipoles is relatively weak and not readily to form a volume coil unless massive and dense dipoles are employed. An H-shaped dipole is proposed as the basic resonant elements to construct the ultrahigh field volume RF coil. The simulation and imaging experiment results show that the proposed H-shaped dipoles can achieve sufficient electromagnetic coupling with a much-reduced number of dipoles and form a volume coil with a practical coil length and uniform B1 fields in an efficient way.

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