Abstract #2659

Structure Adjustment of Surface Dipole Antenna Elements for Body Imaging at 7 Tesla MRI

Suchit Kumar¹, Young-Seung Jo^2,3, Jeong-Hee Kim⁴, Chulhyun Lee³, and Chang-Hyun Oh^1,2,3,4,5

¹Department of Biomicrosystem Technology, Korea University, Seoul, Korea, Republic of, ²Department of Electronics and Information Technology, Korea University, Seoul, Korea, Republic of, ³Korea Basic Science Institute, Cheongju, Chungcheongbuk-do, Korea, Republic of, ⁴Research Institute for Advanced Industrial Technology, Korea University, Sejong City, Korea, Republic of, ⁵ICT Convergence Technology for Health & Safety, Korea University, Sejong City, Korea, Republic of

In ultra-high-field magnetic resonance imaging (UHF-MRI), body imaging suffers from B1 inhomogeneity due to relatively short wavelength. A range of new radio frequency (RF) coil designs has been proposed to overcome this problem. As previously reported, dipole antenna had been proposed to address this B1+ inhomogeneity problem for body imaging. In this paper, structural adjustment of dipole antenna has been tried for parallel transmission to improve overall B1+ homogeneity. Surface dipole antennas with several structures are tried and compared with our top-hat dipole antenna array reported previously. Also, static RF shimming was employed to evaluate the B1 uniformity.

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