Quadrature birdcage coil with distributed capacitors for 7.0 T magnetic resonance data acquisition of small animals
Quadrature birdcage coil with distributed capacitors for 7.0 T magnetic resonance data acquisition of small animals
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DOI：
10.1002/cmr.b.21271
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发表时间：
2014-10
影响因子：
0.9
通讯作者：
R. Stara;G. Tiberi;M. Gabrieli;G. Buonincontri;N. Fontana;A. Monorchio;M. Costagli;M. Symms;A. Retico;M. Tosetti
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文献类型：
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作者：
R. Stara;G. Tiberi;M. Gabrieli;G. Buonincontri;N. Fontana;A. Monorchio;M. Costagli;M. Symms;A. Retico;M. Tosetti
高静磁场磁共振成像（MRI）通常用于啮齿动物的临床前研究。在这种情况下，线圈损耗的最小化是强制性的，以扫描与介质中的射频波长相比较小的样本。在这项研究中，我们构建了一个射频（RF）鸟笼探头与分布电容器，正交工作，专为7.0T 1H MRI的小动物。该设计消除了对探头结构上的额外电气组件的需求，并提供了高SNR、均匀场（体模轴向平面的均匀性为93%）和9.8的线圈灵敏度。进行了小鼠成像的可行性实验，并在身体和大脑临床前成像中证明了配备所提出的线圈的7.0 T人体系统的竞争能力。© 2015威利期刊公司.概念Magn Reson部分B（Magn Reson工程）44 B：83-88，2015
High static magnetic field magnetic resonance imaging (MRI) is commonly used for preclinical studies in rodents. In this context, minimization of coil losses is mandatory to scan samples that are small compared to the radiofrequency wavelength in the medium. In this study we construct a radiofrequency (RF) birdcage probe with distributed capacitors, operating in quadrature, tailored for 7.0T 1H MRI of small animals. The design eliminates the need for extra electrical components on the probe structure and affords a high SNR, a uniform field (homogeneity of 93% in the axial plain of the phantom) and a coil sensitivity of 9.8 . Feasibility experiments of mouse imaging are conducted and the competitive capability of a 7.0 T human system equipped with the proposed coil is demonstrated in both body and brain preclinical imaging. © 2015 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 44B: 83–88, 2015