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Theoretical analysis of magnetic wall decoupling method for radiative antenna arrays in ultrahigh magnetic field MRI
Yan XQ(燕新强); Yan; X.; Z. Xie; J. O. Pedersen and X. Zhang
2015
发表期刊Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
卷号45期号:4页码:183-190
通讯作者燕新强
摘要Radiative antenna techniques, e.g., dipole and monopole, have been proposed for radiofrequency (RF) coil array designs in ultrahigh field MRI to obtain stronger B-1 field and higher signal-to-noise ratio (SNR) gain in the areas deep inside human head or body. It is known that element decoupling performance is crucial to SNR and parallel imaging ability of array coil and has been a challenging issue in radiative antenna array designs for MR imaging. Magnetic wall or induced current elimination (ICE) technique has proven to be a simple and effective way of achieving sufficient decoupling for radiative array coils experimentally. In this study, this decoupling technique for radiative coil array was analyzed theoretically and verified by a simulation study. The decoupling conditions were derived and obtained from the theory. By applying the predicated decoupling conditions, the isolation of two radiative elements could be improved from about -8 dB to better than -35 dB. The decoupling performance has also been validated by current distribution along the radiative elements and magnetic field profiles in a water phantom. (c) 2015 Wiley Periodicals, Inc.
文章类型Article
关键词monopole dipole RF coil array magnetic wall ICE decouple simulation ultrahigh field MRI
学科领域Chemistry; Instruments & Instrumentation; Physics; Spectroscopy
DOI10.1002/cmr.b.21312
收录类别SCI
WOS类目Chemistry, Physical ; Instruments & Instrumentation ; Physics, Atomic, Molecular & Chemical ; Spectroscopy
WOS记录号WOS:000363764500003
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/229037
专题核技术应用研究中心
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Yan XQ,Yan,X.,et al. Theoretical analysis of magnetic wall decoupling method for radiative antenna arrays in ultrahigh magnetic field MRI[J]. Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering,2015,45(4):183-190.
APA 燕新强,Yan,X.,Z. Xie,&J. O. Pedersen and X. Zhang.(2015).Theoretical analysis of magnetic wall decoupling method for radiative antenna arrays in ultrahigh magnetic field MRI.Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering,45(4),183-190.
MLA 燕新强,et al."Theoretical analysis of magnetic wall decoupling method for radiative antenna arrays in ultrahigh magnetic field MRI".Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering 45.4(2015):183-190.
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