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Establishment of highly-optimized imaging techniques and quality control procedures for ultrahigh-field MRI

Research Project

Project/Area Number 26350471
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Social systems engineering/Safety system
Research InstitutionNational Institute of Information and Communications Technology

Principal Investigator

Ueguchi Takashi  国立研究開発法人情報通信研究機構, 脳情報通信融合研究センター脳機能解析研究室, 主任研究員 (80403070)

Co-Investigator(Kenkyū-buntansha) 山田 幸子  大阪大学, 医学部附属病院, 診療放射線技師 (40623054)
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
KeywordsMRI / 磁気共鳴 / 超高磁場 / 撮像技術 / 画質評価 / 品質管理 / 断層画像 / ファントム / 画質 / 脳 / RF磁場 / 定量評価 / 脳機能 / 定量性 / 脳活動 / 脳機能計測 / 安全性
Outline of Final Research Achievements

MRI is a tomographic technique that uses both magnetic fields and radiofrequency (RF) waves. Ultrahigh-field MRI, which uses a very strong main magnetic field such as 7 tesla, offers a benefit of high sensitivity to the signal measurements. However, the present use of ultrahigh-field MRI is often limited by technical issues, such as increased inhomogeneity of both the main magnetic field and RF fields, increased RF power deposition within subjects, changes in tissue contrast, and enhanced susceptibility to subjects' motion. Further, quality control procedures (e.g., for image quality assessment) have not been established. In this study, we investigated highly-optimized imaging techniques and quality control procedures for 7 tesla brain imaging, which is typical of current ultrahigh-field MRI.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report

Research Products

(26 results)

All 2018 2017 2016 2015 2014

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (24 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Accuracy of Dual-Energy Virtual Monochromatic CT Numbers: Comparison between the Single-Source Projection-Based and Dual-Source Image-Based Methods2018

    • Author(s)
      Ueguchi T, Ogihara R, Yamada S
    • Journal Title

      Academic Radiology

      Volume: 印刷中

    • DOI

      10.1016/j.acra.2018.02.022

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dual-energy virtual monochromatic computed tomography for improved attenuation correction in single-photon emission computed tomography in the presence of dense materials2015

    • Author(s)
      Yamada S, Ueguchi T, Shimosegawa E, Fujino K, Shimazu T, Murase K, Hatazawa J
    • Journal Title

      Open J Med Imaging

      Volume: 5 Pages: 183-193

    • DOI

      10.4236/ojmi.2015.54023

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] The impact of dynamic range-narrowing preprocessing in structural similarity (SSIM)-based image quality assessment2018

    • Author(s)
      Yamada S, Ogihara R, Ueguchi T
    • Organizer
      The 74th Annual Meeting of the Japan Society of Radiological Technology (JSRT)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Block-Interleaved Segmented EPI for voxel-wise high-resolution fMRI studies at 7T2018

    • Author(s)
      Liu G, Ueguchi T, Shah A
    • Organizer
      Joint Annual Meeting ISMRM-ESMRMB
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Distortion-Matched Anatomical Imaging Using Inversion Recovery-Prepared EPI for High-Resolution fMRI2018

    • Author(s)
      Shah A, Ueguchi T, Liu G
    • Organizer
      Organization for Human Brain Mapping (OHBM) Annual Meeting 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of small-sized dielectric pads for improved RF field homogeneity in MR imaging of the brain at 7 T2017

    • Author(s)
      Ueguchi T, Kida I, Yamada S, Liu G
    • Organizer
      The 113th Scientific Meeting of the Japan Society of Medical Physics (JSMP)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Dual-energy virtual monochromatic CT for assessing attenuation values of materials: a potential pitfall and its solution2017

    • Author(s)
      Yamada S, Kamiya T, Ogihara R, Fujino K, Shimosegawa E, Hatazawa J
    • Organizer
      The 73rd Annual Meeting of the Japan Society of Radiological Technology (JSRT)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Dual-energy CT for assessing attenuation values of phantom material for bone xSPECT/CT2016

    • Author(s)
      Yamada S, Ueguchi T, Kamiya T, Fujino K, Shimosegawa E, Hatazawa J
    • Organizer
      第56回日本核医学会学術総会
    • Place of Presentation
      名古屋国際会議場,愛知県名古屋市
    • Year and Date
      2016-11-03
    • Related Report
      2016 Research-status Report
  • [Presentation] Quantitative comparison of original versus accelerated NODDI maps of the brain2016

    • Author(s)
      Ueguchi T, Kida I, Kobayashi Y, Okada K, Kadono Y, Yamada S, Liu G
    • Organizer
      第44回日本磁気共鳴医学会大会
    • Place of Presentation
      大宮ソニックシティ,埼玉県さいたま市
    • Year and Date
      2016-09-09
    • Related Report
      2016 Research-status Report
  • [Presentation] Potential source of MRI signal change during transcranial direct current stimulation2016

    • Author(s)
      Liu G, Ueguchi T, Kida I, Okada K, Kobayashi Y
    • Organizer
      24th International Society for Magnetic Resonance in Medicine
    • Place of Presentation
      Suntec Singapore Convention & Exhibition Centre, Singapore, Singapore
    • Year and Date
      2016-05-07
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ultra-high-field MR imaging of the human brain: spatially-inhomogeneous magnetization transfer effects in multislice acquisition2016

    • Author(s)
      Ueguchi T, Kida I, Liu G
    • Organizer
      The 111th Scientific Meeting of the Japan Society of Medical Physics
    • Place of Presentation
      パシフィコ横浜,神奈川県横浜市
    • Year and Date
      2016-04-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Assessment of systematic errors in measured ADC values: a practical approach using easily-available cooling bottles2016

    • Author(s)
      Yamada S, Koyama Y, Ueguchi T
    • Organizer
      The 72nd Annual Meeting of the Japan Society of Radiological Technology
    • Place of Presentation
      パシフィコ横浜,神奈川県横浜市
    • Year and Date
      2016-04-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Ultrahigh-field MR imaging of the human brain: Advantages and technical challenges2016

    • Author(s)
      Ueguchi T
    • Organizer
      10th Anniversary International Symposium on Nanomedicine
    • Place of Presentation
      産業技術総合研究所,茨城県つくば市
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Accuracy of ADC values in diffusion-weighted MRI: a temperature-controlled phantom study2015

    • Author(s)
      Yamada S, Koyama Y, Ueguchi T, Murase K
    • Organizer
      The 110th Scientific Meeting of the Japan Society of Medical Physics
    • Place of Presentation
      北海道大学,北海道札幌市
    • Year and Date
      2015-09-19
    • Related Report
      2015 Research-status Report
  • [Presentation] マルチスライス撮像に伴うMT効果:7T脳画像での評価2015

    • Author(s)
      上口貴志,黄田育宏,松岡雄一郎,劉 国相
    • Organizer
      第43回日本磁気共鳴医学会大会
    • Place of Presentation
      東京ドームホテル,東京都文京区
    • Year and Date
      2015-09-10
    • Related Report
      2015 Research-status Report
  • [Presentation] Toward a detection of activation in visual pathway using diffusion weighted imaging by a 7T human MRI system2015

    • Author(s)
      Kida I, Ueguchi T, Matsuoka Y, Zhou K, Stemmer A
    • Organizer
      The 38th Annual Meeting of the Japan Neuroscience Society
    • Place of Presentation
      神戸コンベンションセンター,兵庫県神戸市
    • Year and Date
      2015-07-28
    • Related Report
      2015 Research-status Report
  • [Presentation] Improved T1 correction for cardiac-triggered fMRI at ultra-high field2015

    • Author(s)
      Ueguchi T, Kida I, Liu G
    • Organizer
      The 109th Scientific Meeting of the Japan Society of Medical Physics
    • Place of Presentation
      パシフィコ横浜,神奈川県横浜市
    • Year and Date
      2015-04-16
    • Related Report
      2015 Research-status Report
  • [Presentation] SSIM-based objective image quality metric for nuclear medicine imaging2015

    • Author(s)
      Yamada S, Ueguchi T, Kamiya T, Fujino K, Shimosegawa E, Murase K, Hatazawa J
    • Organizer
      The 109th Scientific Meeting of the Japan Society of Medical Physics
    • Place of Presentation
      パシフィコ横浜,神奈川県横浜市
    • Year and Date
      2015-04-16
    • Related Report
      2015 Research-status Report
  • [Presentation] Shearing distortion correction for EPI at 7T MRI2015

    • Author(s)
      Liu G, Ueguchi T, Kuribayashi H
    • Organizer
      2015 3rd International Conference on Bioinformatics and Computational Biology
    • Place of Presentation
      The Cityview Hotel Hong Kong, Hong Kong, China
    • Year and Date
      2015-03-12 – 2015-03-13
    • Related Report
      2014 Research-status Report
  • [Presentation] Perceptual image quality assessment based on SSIM index in nuclear medicine imaging2014

    • Author(s)
      Yamada S, Ueguchi T, Kamiya T, Fujino K, Shimosegawa E, Murase K, Hatazawa J
    • Organizer
      The 54th Annual Scientific Meeting of the Japanse Society of Nuclear Medicine
    • Place of Presentation
      大阪国際会議場,大阪府大阪市
    • Year and Date
      2014-11-06 – 2014-11-08
    • Related Report
      2014 Research-status Report
  • [Presentation] Feasibility of cardiac-triggered fMRI at ultra-high field: correction for the T1-related signal fluctuations2014

    • Author(s)
      Ueguchi T
    • Organizer
      電子情報通信学会情報の認知と行動研究会ワークショップ
    • Place of Presentation
      サントピア岡山総社,岡山県総社市
    • Year and Date
      2014-10-02 – 2014-10-03
    • Related Report
      2014 Research-status Report
  • [Presentation] 超高磁場心拍同期fMRI:TRの変動に対する実効フリップ角を考慮したロバストな信号強度補正2014

    • Author(s)
      上口貴志,黄田育宏,劉国相
    • Organizer
      第42回日本磁気共鳴医学会大会
    • Place of Presentation
      ホテルグランヴィア京都,京都府京都市
    • Year and Date
      2014-09-18 – 2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] Prospective motion correctionを用いた高解像度fMRI:頭部動きの検討2014

    • Author(s)
      黄田育宏,上口貴志,松岡雄一郎,劉国相,吉岡芳親,田口隆久
    • Organizer
      第42回日本磁気共鳴医学会大会
    • Place of Presentation
      ホテルグランヴィア京都,京都府京都市
    • Year and Date
      2014-09-18 – 2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] ヒト7T fMRIを用いた自然動画刺激下における高解像脳活動イメージング2014

    • Author(s)
      西本伸志,上口貴志,黄田育宏,劉国相
    • Organizer
      第42回日本磁気共鳴医学会大会
    • Place of Presentation
      ホテルグランヴィア京都,京都府京都市
    • Year and Date
      2014-09-18 – 2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] 7T MRIでのオンラインEPI歪み補正2014

    • Author(s)
      劉国相,上口貴志,栗林秀人
    • Organizer
      第42回日本磁気共鳴医学会大会
    • Place of Presentation
      ホテルグランヴィア京都,京都府京都市
    • Year and Date
      2014-09-18 – 2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] Cardiac-gating fMRI at ultra-high field: feasibility of signal intensity correction for heart-rate fluctuation.2014

    • Author(s)
      Ueguchi T, Kida I, Liu G
    • Organizer
      The 107th Scientific Meeting of Japan Society of Medical Physics
    • Place of Presentation
      パシフィコ横浜,神奈川県横浜市
    • Year and Date
      2014-04-10 – 2014-04-13
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2019-03-29  

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