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タイトル: | Project Overview of HTS Magnet for Ultra-high-field MRI System |
著者: | Tosaka, Taizo Miyazaki, Hiroshi Iwai, Sadanori Otani, Yasumi Takahashi, Masahiko Tasaki, Kenji Nomura, Shunji Kurusu, Tsutomu Ueda, Hiroshi Noguchi, So Ishiyama, Atsushi Urayama, Shinichi Fukuyama, Hidenao |
著者名の別形: | 福山, 秀直 |
キーワード: | MRI Magnet Ultra-high field REBCO HTS coil Screening current |
発行日: | 2015 |
出版者: | Elsevier |
誌名: | Physics Procedia |
巻: | 65 |
開始ページ: | 217 |
終了ページ: | 220 |
抄録: | 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. |
記述: | Proceedings of the 27th International Symposium on Superconductivity (ISS 2014) November 25-27, 2014, Tokyo, Japan |
著作権等: | © 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
URI: | http://hdl.handle.net/2433/215136 |
DOI(出版社版): | 10.1016/j.phpro.2015.05.122 |
出現コレクション: | 学術雑誌掲載論文等 |
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