R&D Project on HTS Magnets for Ultrahigh-Field MRI Systems
R&D Project on HTS Magnets for Ultrahigh-Field MRI Systems
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DOI：
10.1109/tasc.2016.2535863
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发表时间：
2016
影响因子：
1.8
通讯作者：
H. Fukuyama
中科院分区：
文献类型：
--
作者：
T. Tosaka;H. Miyazaki;S. Iwai;Y. Otani;M. Takahashi;K. Tasaki;S. Nomura;T. Kurusu;H. Ueda;S. Noguchi;A. Ishiyama;S. Urayama;H. Fukuyama
介绍了一项用于超高场（UHF）磁共振成像（MRI）系统的高温超导（HTS）磁体的研发项目，该磁体采用（RE）Ba2Cu3O7 （REBCO; RE =稀土）导线。我们的目标是用于全身成像和脑成像的9.4 t MRI系统。REBCO导线是非常有前途的UHF-MRI组件，因为REBCO导线在高磁场下具有高临界电流密度和高抗环向应力强度，这使得MRI磁体比传统磁体更小、更轻。该项目的目的是建立用于超高频磁共振成像的REBCO线圈的基本磁体技术。项目期限为三年，今年是最后一年。我们已经演示了用一个由22个REBCO煎饼线圈组成的小测试线圈产生8.27 t磁场。利用1-T模型磁铁，在直径为100 mm的球形体积（DSV）内，证明了磁场空间分布的不均匀性为百万分之数百。用1-T型磁铁也证明了每小时几百万分之一的稳定磁场。该项目的目标是在2016年3月之前实现，演示使用小型REBCO线圈产生9.4 t磁场，并演示使用具有三对分裂线圈的1.5 t磁铁在200 mm DSV中产生均匀磁场。使用1.5 t磁铁进行成像。
An R&D project on high-temperature superconducting (HTS) magnets using (RE)Ba2Cu3O7 (REBCO; RE = rare earth) wires for ultrahigh-field (UHF) magnetic resonance imaging (MRI) systems is described. Our targets are 9.4-T MRI systems for whole-body imaging and brain imaging. REBCO wires are promising components for UHF-MRI because REBCO wires have high critical current density in high magnetic fields and high strength against hoop stresses, which allows MRI magnets to be smaller and lighter than conventional ones. The aim of the project is to establish basic magnet technologies for adapting REBCO coils for UHF-MRI. The project term is three years, and this year is the final year. We have already demonstrated the generation of an 8.27-T magnetic field with a small test coil composed of 22 REBCO pancake coils. A magnetic field spatial distribution with inhomogeneity of several hundreds of parts per million within 100-mm diameter spherical volume (DSV) was demonstrated with a 1-T model magnet. A stable magnetic field of a few parts per million per hour was also demonstrated with the 1-T model magnet. The targets of the project, to be achieved by March 2016, are to demonstrate the generation of a 9.4-T field with the small REBCO coil, and to demonstrate a homogeneous magnetic field in 200-mm DSV with a 1.5-T magnet having three pairs of split coils. Imaging will be performed with the 1.5-T magnet.
影响因子：
1.8
作者：
H. Ueda;M. Fukuda;K. Hatanaka;Kenta Michitsuji;H. Karino;Tao Wang;Xudong Wang;A. Ishiyama;S. Noguchi;Y. Yanagisawa;H. Maeda
通讯作者：
H. Ueda;M. Fukuda;K. Hatanaka;Kenta Michitsuji;H. Karino;Tao Wang;Xudong Wang;A. Ishiyama;S. Noguchi;Y. Yanagisawa;H. Maeda
影响因子：
1.8
作者：
H. Ueda;A. Ishiyama;Yuta Ariya;Tao Wang;Xudong Wang;K. Agatsuma;H. Miyazaki;T. Tosaka;S. No
通讯作者：
H. Ueda;A. Ishiyama;Yuta Ariya;Tao Wang;Xudong Wang;K. Agatsuma;H. Miyazaki;T. Tosaka;S. No
回旋加速器应用高温超导线圈中屏蔽电流引起的磁场分布的时空行为
影响因子：
1.8
作者：
Ueda;H、Fukuda;M、Hatanaka;K、Ishiyama;A (以下2名)
通讯作者：
A (以下2名)