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Abstract #0767

Top-Hat Dipole RF Coil with Large Field of View for 7 T Brain MR Imaging

Chang-Hyun Oh1,2,3,4, Chulhyun Lee5, Suchit Kumar3, Jun-Sik Yoon1, Ha-Kyu Jeong6, Jeong-Hee Kim2, Young-Seung Jo1,5, Jong-Min kim1, Christian Bruns7, Tim Herrmann7, Johannes Bernarding7, and Zang-Hee Cho8

1Department of Electronics and Information Technology, Korea University, Seoul, Korea, Republic of, 2Research Institute for Advanced Industrial Technology, Korea University, Sejong City, Korea, Republic of, 3Department of Biomicrosystem Technology, Korea University, Seoul, Korea, Republic of, 4ICT Convergence Technology for Health & Safety, Korea University, Sejong City, Korea, Republic of, 5Korea Basic Science Institute, Cheongju, Chungcheongbuk-do, Korea, Republic of, 6BIU Clinical Science MR, Philips Korea, Seoul, Korea, Republic of, 7Department for Biometrics und Medical Informatics, Otto-von-Guericke University, Magdeburg, Germany, 8Advanced Institutes of Convergence Technology, Seoul National University, Seoul, Korea, Republic of

In ultra-high-field brain MR imaging, the coverage for imaging with the optimized protocol is constrained not only by scan time, but also by the coil structure. Since presently available surface loop RF coils have limited field of view, it is very difficult to achieve the coverage from the top of the head to the end of the cervical vertebrae. Prior solution to this problem was to increase the number of elements. However, it increases the complexity of coil array design thus causing difficulties in construction of the coils. In this paper, an 8-channel top-hat dipole receive RF coil is proposed for the brain imaging at 7 Tesla MRI. By enabling the coil tuning with novel tuning methods for shorter RF coil lengths but still with reasonable uniformity and SNR for more imaging field of view compared with multi-element loop coils.

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