Development of an ultralow field MRI system for metallic implant

• Project/Area Number: 21680040
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Biomedical engineering/Biological material science
• Research Institution: The University of Tokyo
• Principal Investigator: SEKINO Masaki 東京大学, 大学院・工学系研究科, 准教授 (20401036)
• Co-Investigator(Renkei-kenkyūsha): OHSAKI Hiroyuki 東京大学, 大学院・新領域創成科学研究科 (10203754) ; UENO Shoogo 九州大学, 大学院・工学研究院 (00037988) ; IRAMINA Keiji 九州大学, 大学院・システム情報科学研究院 (20211758)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥28,210,000 (Direct Cost: ¥21,700,000、Indirect Cost: ¥6,510,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2010: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2009: ¥20,930,000 (Direct Cost: ¥16,100,000、Indirect Cost: ¥4,830,000)
• Keywords: 超伝導材料・素子 / 計測工学 / 生物・生体工学 / バイオ関連機器 / 磁気共鳴

Research Abstract

Metallic implant causes distortion of images in conventional MRI. The purpose of this study is to develop an ultralow-field MRI system which enables us to obtain images of samples with metallic implants. A magnetic shield, a liquid-helium dewar, imaging coils, and driving circuits were newly developed. The characteristics of the SQUID was evaluated theoretically and experimentally.

Research Products

• [Journal Article] Concentric slitting of a ring-shaped bulk superconductor for a reduction in circumferential inhomogeneity of the trapped magnetic field (2011)
  • Author(s): M. Sekino, H. Yasuda, A. Miyazoe, andH. Ohsaki
  • Journal Title: IEEE Transactions on Applied Superconductivity Volume: vol. 21 Pages: 1588-1591
  • Peer Reviewed
• [Journal Article] Concentric slitting of a ring-shaped bulk superconductor for a reduction in circumferential inhomogeneity of the trapped magnetic field (2011)
  • Author(s): Masaki Sekino, et al
  • Journal Title: IEEE Transactions on Applied Superconductivity Volume: 21 Pages: 1588-1591
  • Peer Reviewed
• [Journal Article] Subvoxel limits of magnetic resonance angiography: One-dimensional case (2010)
  • Author(s): M. Takeuchi, D. Kim, M . Sek i n o S . Ue n o, H . O hs a ki , and N. Iriguchi
  • Journal Title: Journal of Applied Physics Volume: vol. 107
  • Peer Reviewed
• [Journal Article] Subvoxel limits of magnetic resonance angiography : One-dimensional case (2010)
  • Author(s): Michihiro Takeuchi, et al
  • Journal Title: Journal of Applied Physics Volume: 107
  • Peer Reviewed
• [Journal Article] Subvoxel limits of magnetic resonance angiography : One-dimensional case (2010)
  • Author(s): Michihiro Takeuchi, et al.
  • Journal Title: Journal of Applied Physics 107((印刷中)掲載確定)
  • Peer Reviewed
• [Presentation] Development of a SQUID systemfor ultralow-field MRI measurement (2013)
  • Author(s): T. Woo, M. Nagase, H. Ohsaki, and M. Sekino
  • Organizer: International Symposium on AppliedElectromagnetics and Mechanics
  • Place of Presentation: Quebec, Canada
  • Year and Date: 2013-08-01
• [Presentation] MRI と光脳機能イメージング の融合が持つ可能性 (2013)
  • Author(s): 関 野正樹
  • Organizer: JST 戦略的イノベーション創出推進事業のためのワーク ショップ「脳,神経等の疾患を対象とし た安全なイメージング技術・機器開発」
  • Place of Presentation: 東京
  • Year and Date: 2013-03-25
• [Presentation] A low-Tc SQUID system for ultralow-field MRI (2013)
  • Author(s): Woo, M. Nagase, and M. Sekino
  • Organizer: Seoul National University-University of Tokyo Joint Seminar
  • Place of Presentation: Seoul, Korea
  • Year and Date: 2013-03-14
• [Presentation] 超低磁場MRI用のSQUIDシステムの基礎研究 (2013)
  • Author(s): 禹泰城,長瀬まさえ,関野正樹
  • Organizer: 電気学会マグネティックス研究会
  • Place of Presentation: 東京
  • Year and Date: 2013-02-28
• [Presentation] Taeseong Woo, Masae Nagase, Hiroyuki Ohsaki, Masaki Sekino (2013)
  • Author(s): Development of a SQUID system for ultralow-field MRI measurement
  • Organizer: International Symposium on Applied Electromagnetics and Mechanics
  • Place of Presentation: Quebec, Canada
• [Presentation] Novel superconductor configurations for MRI magnets (2011)
  • Author(s): M . Se kino , H. Ohsaki , and H. Wada
  • Organizer: 24th International Symposium on Superconductivity
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2011-10-26
• [Presentation] Novel superconductor configurations for MRI magnets (2011)
  • Author(s): Masaki Sekino, et al
  • Organizer: 24th International Symposium on Superconductivity
  • Place of Presentation: Tokyo, Japan(招待講演)
  • Year and Date: 2011-10-26
• [Presentation] Concentric slitting of a ring-shaped bulk superconductor for a reduction in circumferential inhomogeneity of the trapped magnetic field (2010)
  • Author(s): M . Sekino , H. Yasuda, and H . O hs a ki
  • Organizer: Applied Superconductivity Conference
  • Place of Presentation: Washington DC
  • Year and Date: 2010-08-04
• [Presentation] Concentric slitting of a ring-shaped bulk superconductor for a reduction in circumferential inhomogeneity of the trapped magnetic field (2010)
  • Author(s): Masaki Sekino, et al
  • Organizer: Applied Superconductivity Conference
  • Place of Presentation: Washington DC, USA
  • Year and Date: 2010-08-04
• [Presentation] MRIと光脳機能イメージングの融合が持つ可能性 (2010)
  • Author(s): 関野正樹
  • Organizer: JST戦略的イノベーション創出推進事業のためのワークショップ「脳, 神経等の疾患を対象とした安全なイメージング技術・機器開発」
  • Place of Presentation: 東京
  • Year and Date: 2010-03-25
• [Presentation] T1 and T2 effects during RF pulses in MRI sequences (2009)
  • Author(s): N. Boulant, M. Sekino , M. Cloos, A.Amadon, and M. Luong
  • Organizer: 7th Bi-Annual High Field Workshop
  • Place of Presentation: Minneapolis, USA
  • Year and Date: 2009-10-09
• [Presentation] スピンエコー法によるMR画像の定量化誤差の検討 (2009)
  • Author(s): 竹内道広,キムドンミン,関野正樹,上野照剛,大崎博之,入口紀男
  • Organizer: 第37回日本磁気共鳴医学会大会
  • Place of Presentation: 横浜
  • Year and Date: 2009-10-02
• [Presentation] 7T 装置でのパラレル送信において RF 照射中 の緩和が信号均一度に与える影響 (2009)
  • Author(s): 関野正樹 , N. Boulant, M. Luong, A.Amadon, 大崎博之, D. Le Bihan
  • Organizer: 第37回日本磁気共鳴医学会大会
  • Place of Presentation: 横浜
  • Year and Date: 2009-10-01
• [Presentation] 7T装置でのパラレル送信においてRF照射中の緩和が信号均一度に与える影響 (2009)
  • Author(s): 関野正樹, 他
  • Organizer: 第37回日本磁気共鳴医学会大会
  • Place of Presentation: 横浜
  • Year and Date: 2009-10-01
• [Presentation] 超低磁場MRI用のSQUIDシステムの基礎研究
  • Author(s): 禹泰城, 長瀬まさえ, 関野正樹
  • Organizer: 電気学会マグネティックス研究会
  • Place of Presentation: 東京, 電力中央研究所
• [Presentation] A low-Tc SQUID system for ultralow-field MRI
  • Author(s): Taeseong Woo, Masae Nagase, and Masaki Sekino
  • Organizer: Seoul National University-University of Tokyo Joint Seminar
  • Place of Presentation: Seoul, Korea
• [Remarks]
  • URL: http://www.bee.t.u-tokyo.ac.jp/index_j.html