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Fundamental Investigation of shimming by magnetic fluid for next generation MRI/NMR

Research Project

Project/Area Number 16K01403
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Medical systems
Research InstitutionHokkaido University

Principal Investigator

Noguchi So  北海道大学, 情報科学研究科, 准教授 (30314735)

Research Collaborator MIYAO Ryosuke  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsNMR / 高磁場 / 磁場補正 / 磁場均一度 / 超伝導マグネット / MRI/NMR / 磁性流体 / 核磁気共鳴 / 超高磁場 / シミング
Outline of Final Research Achievements

I have done a fundamental investigation on a shimming way for next-generation MRI/NMR magnets. Recently, magnets wound with second-generation high-temperature superconducting tape wires are developed all over the world. For example, MIT is making an NMR magnet to generate 30.5 teslas, Japan 9.4-tesla MRI magnet. However, such magnets has a problem on the screening current-induced field. It deteriorates the field homogeneity. Therefore, I have developed a simple simulation method to calculate the screening currents and the field generated by them. In addition, I have developed a accelerating method to compute the field homogeneity of magnets composed of multistacked pancake coils.

Academic Significance and Societal Importance of the Research Achievements

QOL向上を目指す医療や製薬などの場で、より高磁場なMRIやNMRの開発が求めらている。日本や米国などでその開発研究が行われている。しかし、MRIやNMRは高度な均一磁場が求められるが、第二世代高温超伝導を使用したマグネットは遮蔽電流磁場と呼ばれる不正磁場が発生する。そこで、本研究では、その遮蔽電流磁場を正確にシミュレーションすること、マグネット自体の不正磁場を高速に求めることをまず実施し、その後、その不正磁場を低減することを検討した。この成果により、次世代MRI/NMRの実現が近づいた。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (15 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results) Presentation (8 results) (of which Int'l Joint Research: 8 results)

  • [Int'l Joint Research] Massachusetts Institute of Technology/Florida State University(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] National High Magnetic Field Laboragory(米国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Assembly and Test of a 3-Nested-Coil 800-MHz REBCO Insert (H800) for the MIT 1.3 GHz LTS/HTS NMR Magnet2019

    • Author(s)
      Michael Philip C.、Park Dongkeun、Choi Yoon Hyuck、Lee Jiho、Li Yi、Bascunan Juan、Noguchi So、Hahn Seungyong、Iwasa Yukikazu
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 29 Issue: 5 Pages: 1-6

    • DOI

      10.1109/tasc.2019.2901246

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quench Analyses of the MIT 1.3-GHz LTS/HTS NMR Magnet2019

    • Author(s)
      Noguchi So、Park Dongkeun、Choi Yoonhyuch、Lee Jiho、Li Yi、Michael Philip C.、Bascunan Juan、Hahn Seungyong、Iwasa Yukikazu
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 29 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2019.2903268

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A simple screening current-induced magnetic field estimation method for REBCO pancake coils2019

    • Author(s)
      S. Noguchi, H. Ueda, S. Hahn, A. Ishiyama, Y. Iwasa
    • Journal Title

      Superconductor Science and Technology

      Volume: 32 Issue: 4 Pages: 045007-045007

    • DOI

      10.1088/1361-6668/aafe26

    • NAID

      120006820170

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Field-Shaking System to Reduce the Screening Current-Induced Field in the 800-MHz HTS Insert of the MIT 1.3-GHz LTS/HTS NMR Magnet: A Small-Model Study2018

    • Author(s)
      Lee Jiho、Park Dongkeun、Michael Philip C.、Noguchi So、Bascunan Juan、Iwasa Yuki
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 28 Issue: 3 Pages: 1-1

    • DOI

      10.1109/tasc.2018.2803801

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Fast Computation Method of Magnetic Field Homogeneity for NMR/MRI REBCO Pancake Coils2017

    • Author(s)
      Miyao Ryosuke、Igarashi Hajime、Kim SeokBeom、Noguchi So
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 27 Issue: 4 Pages: 1-4

    • DOI

      10.1109/tasc.2016.2637937

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Economical Optimization Method of Rebco Superconducting Magnets Using Game Theory2018

    • Author(s)
      So Noguchi, Vlatko Cingoski
    • Organizer
      15th International Workshop on Optimization and Inverse Problems in Electromagnetism
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Advanced Screening Current Simulation of REBCO Pancake Coils Considering REBCO Tape Thickness2018

    • Author(s)
      So Noguchi, Hiroshi Ueda, Atsushi Ishiyama
    • Organizer
      2018 Applied Superconductivity Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Assembly and Test of a 3-Nested-Coil 800-MHz REBCO Insert (H800) for the MIT 1.3 GHz LTS/HTS NMR Magnet2018

    • Author(s)
      Philip Michael, Dongkeun Park, Yoon Hyuck Choi, Jiho Lee, Yi Li, Juan Bascunan, So Noguchi, Seungyong Hahn, Yukikazu Iwasa
    • Organizer
      2018 Applied Superconductivity Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical Evaluation on Reduction Methods of Screening-current Induced Magnetic Field in REBCO Multiple Coil System for 9.4-T Whole-body MRI2018

    • Author(s)
      Keita Ito, Atsushi Ishiyama, Hiroshi Ueda, So Noguchi
    • Organizer
      2018 Applied Superconductivity Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Quench Simulation Study of the MIT 1.3-GHz LTS/HTS NMR Magnet2018

    • Author(s)
      So Noguchi, Dongkeun Park, Jiho Lee, Yoon Hyuck Choi, Yi Li, Philip Michael, Juan Bascunan, Seungyong Hahn, Yukikazu Iwasa
    • Organizer
      2018 Applied Superconductivity Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Simple Screening Current Simulation Method Using Equivalent Circuit Model for REBCO Pancake Coils2018

    • Author(s)
      So Noguchi, Dongkeun Park, Seungyong Hahn, Yukikazu Iwasa
    • Organizer
      2018 Applied Superconductivity Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An Accelerated Computation Method of Legendre Polynomial Coefficients for MRI REBCO Magnet Design2016

    • Author(s)
      So Noguchi, Ryosuke Miyao, Hajime Igarashi, Atsushi Ishiyama
    • Organizer
      The 17th Biennial Conference on Electromagnetic Field Computation
    • Place of Presentation
      Hilton Miami-Downtown (Miami, FL, USA)
    • Year and Date
      2016-11-13
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fast and Accurate Computation Method of Magnetic Field Homogeneity for NMR/MRI REBCO Pancake Coils2016

    • Author(s)
      R. Miyao, S. Noguchi, H. Igarashi
    • Organizer
      2016 Applied Superconductivity Conference
    • Place of Presentation
      Colorado Convention Center (Denver, CO, USA)
    • Year and Date
      2016-09-05
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2022-02-16  

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