Project Overview of HTS Magnet for Ultra-high-field MRI System

Taizo Tosaka, Hiroshi Miyazaki, Sadanori Iwai, Yasumi Otani, Masahiko Takahashi, Kenji Tasaki, Shunji Nomura, Tsutomu Kurusu, Hiroshi Ueda, So Noguchi, Atsushi Ishiyama, Shinichi Urayama, Hidenao Fukuyama

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    11 Citations (Scopus)

    Abstract

    A project to develop an ultra-high-field magnetic resonance imaging (MRI) system based on HTS magnets using (RE)Ba2Cu3O7 (REBCO; RE=rear earth) coils is underway. The project is supported by the Japanese Ministry of Economy, Trade and Industry and aims to establish magnet technologies for a whole-body 9.4 T MRI system. REBCO wires have high critical current density in high magnetic fields and high strength against hoop stresses, and therefore, MRI magnets using REBCO coils are expected to have cryogenic systems that are smaller, lighter, and simpler than the conventional ones. A major problem in using REBCO coils for MRI magnets is the huge irregular magnetic field generated by the screening current in REBCO tapes. Thus, the main purpose of this project is to make the influence of this screening current predictable and controllable. Fundamental technologies, including treatment of the screening currents, were studied via experiments and numerical simulations using small coils. Two types of model magnets are planned to be manufactured, and the knowledge gained in the development of the model magnets will be reflected in the magnet design of a whole-body 9.4 T MRI system.

    Original languageEnglish
    Title of host publicationPhysics Procedia
    PublisherElsevier
    Pages217-220
    Number of pages4
    Volume65
    DOIs
    Publication statusPublished - 2015
    Event27th International Symposium on Superconductivity, ISS 2014 - Tokyo, Japan
    Duration: 2014 Nov 252014 Nov 27

    Other

    Other27th International Symposium on Superconductivity, ISS 2014
    CountryJapan
    CityTokyo
    Period14/11/2514/11/27

    Keywords

    • HTS coil
    • Magnet
    • MRI
    • REBCO
    • Screening current
    • Ultra-high field

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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  • Cite this

    Tosaka, T., Miyazaki, H., Iwai, S., Otani, Y., Takahashi, M., Tasaki, K., Nomura, S., Kurusu, T., Ueda, H., Noguchi, S., Ishiyama, A., Urayama, S., & Fukuyama, H. (2015). Project Overview of HTS Magnet for Ultra-high-field MRI System. In Physics Procedia (Vol. 65, pp. 217-220). Elsevier. https://doi.org/10.1016/j.phpro.2015.05.122