Microtesla NMR and high resolution MR imaging using high-Tc SQUIDs

Shu-Hsien Liao, Hsien Hsien Chen, Yu Shan Deng, Ming Wei Wang, K. L. Chen, C. W. Liu, C. I. Liu, Hong-Chang Yang, Herng-Er Horng, Jen-Je Chieh, Shieh-Yueh Yang

研究成果: 雜誌貢獻文章

5 引文 斯高帕斯(Scopus)

摘要

In this work, we set up a low-cost high-T\rm c SQUID-based low-field nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) system without \mu-metal. In order to reduce the surrounding noise, we built the shielded box and shielded cylinder made out of aluminum. For NMR and MRI measurements, we apply the gradient compensation field to cancel the field inhomogeneity in our lab to obtain a narrow linewidth NMR spectrum of 0.8 Hz from a 10-ml water specimen. In the absence of chemical shifts, the J-couplings of trimethyl phosphate and trifluoroethanol are demonstrated in trials of the proposed scheme. Furthermore, the 2-D images of water specimen and mini tomato with high-image resolution of better than 2 mm are obtained by using our low-field MRI system. Our high-T\rm c SQUID-based low-field MRI system promises a low-cost and high imaging quality in microtesla magnetic fields.

原文英語
文章編號6401170
期刊IEEE Transactions on Applied Superconductivity
23
發行號3
DOIs
出版狀態已發佈 - 2013 二月 18

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Liao, S-H., Chen, H. H., Deng, Y. S., Wang, M. W., Chen, K. L., Liu, C. W., Liu, C. I., Yang, H-C., Horng, H-E., Chieh, J-J., & Yang, S-Y. (2013). Microtesla NMR and high resolution MR imaging using high-Tc SQUIDs. IEEE Transactions on Applied Superconductivity, 23(3), [6401170]. https://doi.org/10.1109/TASC.2013.2237732