2016年4月
Ultralow-Field High-Tc SQUID NMR/MRI System with a 77-K Cooled Copper Flux Transformer
IEEE Transactions on Applied Superconductivity
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- 巻
- 26
- 号
- 3
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1109/TASC.2015.2512798
We propose a high-Tc superconducting quantum interference device ultralow-field magnetic resonance imaging (ULF MRI) system for food inspection. Although the ULF MRI is compact and low cost, compared with a conventional high-field MRI, the detected signal is extremely weak. Thus, a nuclear magnetic resonance (NMR) system was constructed and optimized before realizing the MRI system. The purpose of the study is to improve the signal-to-noise ratio (SNR) of the NMR signal. A copper-wound flux transformer cooled at 77 K by liquid nitrogen and LC resonance were employed and tested to improve the SNR. As a result, the measured SNR was approximately equal to 236 with LC resonance, improving by a factor of 7.8.
- リンク情報
- ID情報
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- DOI : 10.1109/TASC.2015.2512798
- ISSN : 1051-8223
- SCOPUS ID : 84962160947