Field Distribution and Coupling Investigation of an Eight-Channel RF Coil Consisting of Different Dipole Coil Elements for 7 T MRI
Field Distribution and Coupling Investigation of an Eight-Channel RF Coil Consisting of Different Dipole Coil Elements for 7 T MRI
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由不同偶极线圈元件组成的 7 T MRI 八通道射频线圈的场分布和耦合研究
DOI：
10.1109/tbme.2016.2602441
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发表时间：
2017
影响因子：
4.6
通讯作者：
A. Rennings
中科院分区：
文献类型：
--
作者：
Z. Chen;K. Solbach;D. Erni;A. Rennings
在本文中，我们研究了用于7T MRI的由不同偶极子线圈元件组成的多通道射频（RF）线圈的B1分布和耦合特性，并探讨了通过组合不同线圈元件在场分布和去耦之间实现折衷的可行性。这里考虑两种类型的偶极子元件：曲折偶极子元件，通过基于片式电容器的射频屏蔽连接，实现相邻元件之间的充分去耦；开放式曲折偶极子元件表现出更广泛的磁场分布。通过将开路偶极子元件嵌套在带有端部电容器的偶极子元件之间，与仅由带有端部电容器的元件组成的偶极子线圈相比，B1分布在场穿透深度和均匀性方面得到改善，同时，与仅由开路元件组成的偶极子线圈相比，相邻元件之间的耦合更少。所提出的方法通过全波仿真和实验结果得到验证。
In this contribution, we investigate the B1distribution and coupling characteristics of a multichannel radio frequency (RF) coil consisting of different dipole coil elements for 7 T MRI, and explore the feasibility to achieve a compromise between field distribution and decoupling by combining different coil elements. Two types of dipole elements are considered here: the meander dipole element with a chip-capacitor-based connection to the RF shield which achieves a sufficient decoupling between the neighboring elements; and the open-ended meander dipole element which exhibits a broader magnetic field distribution. By nesting the open-ended dipole elements in between the ones with end-capacitors, the B1distribution, in terms of field penetration depth and homogeneity, is improved in comparison to the dipole coil consisting only of the elements with end-capacitors, and at the same time, the adjacent elements are less coupled to each other in comparison to the dipole coil consisting only of the open-ended elements. The proposed approach is validated by both full-wave simulation and experimental results.
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影响因子：
2.5
作者：
Ugurbil, K;Adriany, G;Zhu, XH
通讯作者：
Zhu, XH
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
M. Kuwahara;S. Eiho
通讯作者：
S. Eiho
影响因子：
4.4
作者：
van den Bergen, Bob;van den Berg, Cornelis A. T.;Lagendijk, Jan J. W.
通讯作者：
Lagendijk, Jan J. W.
影响因子：
3.3
作者：
HOULT, DI;CHEN, CN;SANK, VJ
通讯作者：
SANK, VJ
基于特征模态分析的7特斯拉磁共振成像不同射频线圈元件耦合研究
DOI：
10.1109/mwsym.2014.6848473
发表时间：
2014
期刊：
2014 IEEE MTT-S International Microwave Symposium (IMS2014)
影响因子：
--
作者：
Z. Chen;K. Solbach;D. Erni;A. Rennings
通讯作者：
A. Rennings