Development of Ultra Low Field Nuclear Magnetic Resonance Imaging System Using HTS rf SQUID
Development of Ultra Low Field Nuclear Magnetic Resonance Imaging System Using HTS rf SQUID
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DOI：
10.1007/s10948-010-0876-8
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发表时间：
2011
影响因子：
1.8
通讯作者：
O. Snigirev;M. Hayashi;S. Fukumoto;Y. Hatsukade;Y. Katsu;S. Tanaka
中科院分区：
文献类型：
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作者：
O. Snigirev;M. Hayashi;S. Fukumoto;Y. Hatsukade;Y. Katsu;S. Tanaka
利用高温超导rf SQUID和室温线圈，构建并研究了一种超低场核磁共振成像系统。测量场Bm为44.8 μT，极化场Bp为36.8 mT，记录了1h的自由感应衰减信号；在∂BZ/∂z和∂BZ/∂y梯度为0.8 μT/m的情况下，我们可以获得一个简单水幻影的准二维4像素图像。
We constructed and studied an ultra low-field nuclear magnetic resonance imaging system using a HTS rf SQUID and room-temperature coils. We recorded the free induction decay signals of1H by employing a measuring field,Bm, of 44.8 μT and a polarizing field,Bp, of 36.8 mT; in the presence of∂BZ/∂zand∂BZ/∂ygradients of the order of 0.8 μT/m, we were able to obtain a quasi two-dimensional 4-pixels image of a simple water phantom.