• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of brain metabolite measurement and finding of patological fingerprints using a ultra-high field MR system

Research Project

Project/Area Number 21H03806
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionKyoto University

Principal Investigator

OKADA Tomohisa  京都大学, 医学研究科, 准教授 (30321607)

Co-Investigator(Kenkyū-buntansha) 吉原 雄二郎  京都大学, 医学研究科, 助教 (00529464)
赤坂 太  京都大学, 医学研究科, 特定助教 (00883224)
澤本 伸克  京都大学, 医学研究科, 教授 (90397547)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
KeywordsMRスペクトロスコピー / 超高磁場磁気共鳴装置 / グルタミン酸 / γ-アミノ酪酸 / 巨大分子 / 精神神経疾患 / 神経変性疾患 / GABA / STEAM / 脳内代謝物質 / 超高磁場MR装置 / 病態バイオマーカー / 脳内代謝物 / 超高磁場 / 病態フィンガープリント
Outline of Research at the Start

超高磁場磁気共鳴装置を用いて、患者にも適用可能な実用的脳内化学物質マッピング計測法を研究開発する。興奮性・抑制性神経伝達物質の代表であるグルタミン酸・γ-アミノ酪酸や抗酸化物質のグルタチオンなど脳内化学物質量を診療上実用的な段階へと高める。得られた結果を多物質量の組み合わせ変化として解析するとともに、fMRIなど他のMR計測値を加えたマルチ・パラメトリック解析を実施する。
その成果を脳神経変性疾患・精神神経疾患などに適用し、病態を特徴づけるフィンガープリントを明らかにする。

Outline of Final Research Achievements

Using short-TE STEAM imaging, it has become possible to measure 10 or more neurochemicals in multiple parts of the brain within 30 minutes with an ultra-high magnetic field 7 Tesla MRI. Macromolecules that affect quantitation were measured and incorporated into the analysis model. We presented dynamic MRS that captures changes in glutamate over time due to barin activity.
Based on these achievements, we conducted joint research targeting patients with neuropsychiatric and neurodegenerative diseases. We found that patients with neurofibromatosis type I had higher levels of both glutamate and GABA in the primary visual cortex than controls. The paper is under preparation. We are also conducting joint research on other areas such as depression, schizophrenia and others.

Academic Significance and Societal Importance of the Research Achievements

従来診療MR装置でMRSにより計測可能な脳神経物質は主に5種類程度であったが、超高磁場MRI装置とshort-TE STEAM計測の組み合わせにより10種類以上の脳神経代謝物質が観察可能となった。神経伝達物質や酸化ストレスを反映する物質など多様な代謝物量変化の組み合わせから、疾患の病態を解明することが可能となった。
本研究で30分以内に4部位以上を計測可能となった。病態変化の鍵となる脳部位を含めた複数部位での計測により多様な脳神経疾患の病態解明につながるとともに、その成果を診療用MR装置へとトランスレートすることで、ビッグデータ解析による病態や治療モニタリングに資すると期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (13 results)

All 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] SRI, University of Toronto(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Quantification of Cerebral Glucose Concentrations via Detection of the <scp>H1</scp>‐α‐Glucose Peak in <scp><sup>1</sup>H MRS</scp> at 7?T2023

    • Author(s)
      Kuribayashi Hideto、Urushibata Yuta、Imai Hirohiko、Ahn Sinyeob、Seethamraju Ravi Teja、Isa Tadashi、Okada Tomohisa
    • Journal Title

      Journal of Magnetic Resonance Imaging

      Volume: 59 Issue: 2 Pages: 661-672

    • DOI

      10.1002/jmri.28834

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] GABA, glutamate and excitatory-inhibitory ratios measured using short-TE STEAM MRS at 7-Tesla: Effects of macromolecule basis sets and baseline parameters2023

    • Author(s)
      Okada Tomohisa、Kuribayashi Hideto、Urushibata Yuta、Fujimoto Koji、Akasaka Thai、Seethamraju Ravi Teja、Ahn Sinyeob、Isa Tadashi
    • Journal Title

      Heliyon

      Volume: 9 Issue: 7 Pages: e18357-e18357

    • DOI

      10.1016/j.heliyon.2023.e18357

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A pictorial review of structural neuroimaging at 7T.2022

    • Author(s)
      *Okada T, Fujimoto K, Fushimi Y, Akasaka T, Thuy DHD, Shima A, Sawamoto N, Oishi N, Zhang Z, Funaki T, Nakamoto Y, Murai T, Miyamoto S, Takahashi R, Isa T.
    • Journal Title

      Quantitative Imaging in Medicine and Surgery

      Volume: 12 Issue: 6 Pages: 3406-3435

    • DOI

      10.21037/qims-21-969

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 7T-MRI: Advantages and technical issues for neuroimaging2024

    • Author(s)
      Tomohisa Okada
    • Organizer
      Arab Health Congress 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High resolution 4D-cine MRI of pulsatile aneurysmal motion with radial acquisition at 7T2023

    • Author(s)
      Thai Akasaka, Koji Fujimoto, Martijn Cloos, Tomohisa Okada, Shinichi Urayama, Isa Tadashi.
    • Organizer
      ISMRM 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of short-TE STEAM data at 7T: Effects of a macromolecular basis set and baseline parameters on GABA, glutamate and their ratio.2023

    • Author(s)
      Tomohisa Okada, Hideto Kuribayashi, Yuta Urushibata, Thai Akasaka, Ravi Teja Seethamraju, Sinyeob Ahn, Tadashi Isa.
    • Organizer
      ISMRM 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cerebral glucose quantification using 1H short-TE STEAM spectroscopy at 7T: Influence of macromolecule signals2023

    • Author(s)
      Hideto Kuribayashi, Yuta Urushibata, Thuy Ha Duy Dinh, Hirohiko Imai, Sinyeob Ahn, Ravi Teja Seethamraju, Tadashi Isa, Tomohisa Okada
    • Organizer
      ISMRM 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of short-TE STEAM data at 7T: Effects of a macromolecular basis set and baseline parameters on GABA, glutamate and their ratio.2023

    • Author(s)
      Okada T, Kuribayashi H, Urushibata Y, Akasaka T, Seethamraju R, Ahn S, Isa T.
    • Organizer
      International Society of Magnetic Resonance in Medicine.
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cerebral glucose quantification using 1H short-TE STEAM spectroscopy at 7T: Influence of macromolecule signals2023

    • Author(s)
      Kuribayashi H, Urushibata Y, Thuy DHD, Imai H, Ahn S, Seethamraju R, Isa T, Okada T.
    • Organizer
      International Society of Magnetic Resonance in Medicine.
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Changes in neurochemicals of patients with depression observed using two MRS sequences at 7T.2022

    • Author(s)
      Tomohisa Okada, et al.
    • Organizer
      International Society for Magnetic Resonance in Medicine
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Baseline Correction of 1H MRS for Cerebral Glucose Quantification via Detecting H1-α-Glucose Peak at 7T.2022

    • Author(s)
      Hideto Kuribayashi, ..., Tomohisa Okada.
    • Organizer
      International Society for Magnetic Resonance in Medicine
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Remarks] Faculty Members > Associate Professor Jamie Near

    • URL

      https://medbio.utoronto.ca/faculty/near

    • Related Report
      2022 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi