Alternating Impedance Multi-Channel Transmission Line Resonators for High Field Magnetic Resonance Imaging

被引：0
|
作者：
Akgun, Can Eyup [1 ]
DelaBarre, Lance [1 ]
Snyder, Carl Jason [1 ]
Sohn, Sung-Min
Adriany, Gregor [1 ]
Ugurbil, Kamil [1 ]
Gopinath, Anand
Vaughan, John Thomas [1 ]
机构：
[1] Univ Minnesota, Ctr Magnet Resonance Res, Minneapolis, MN 55408 USA
来源：
2010 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (MTT) | 2010年
关键词：
Microstrip; MRI; impedance; resonators; RF coils; ARRAYS; COIL;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In high field MRI systems, microstrip transmission line elements have been successfully implemented as magnetic field generating elements in multi-channel volume coils. However, at these field strengths, short in vivo wavelengths and greater sample losses lead to RF in-homogeneities, as well as, RF inefficiencies. Optimizations of these elements are required to overcome these challenges and to perform a variety of MR applications. In this study, two different microstrip designs with varying impedance lines along the length of the coil - one producing peak magnetic field in the center and the other extending the length of usable magnetic field along the length of the coil- are investigated. Simulation and image results for 8-channel volume coils incorporating these element designs were obtained using a phantom in a 7 Tesla MRI system.
引用
收藏
页码：756 / 759
页数：4
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