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Examination of usefulness and standardization of effective transverse relaxation rate as an imaging biomarker

Research Project

Project/Area Number 17K10404
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Radiation science
Research InstitutionOsaka University

Principal Investigator

Onishi Hiromitsu  大阪大学, 医学系研究科, 准教授 (20452435)

Co-Investigator(Kenkyū-buntansha) 堀 雅敏  神戸大学, 医学研究科, 特命教授 (00346206)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsイメージングバイオマーカー / 磁気共鳴画像 / 実効横緩和率 / R2*値 / 肝 / 鉄含有量 / 核磁気共鳴画像(MRI) / 鉄 / 肝臓
Outline of Final Research Achievements

At magnetic resonance imaging (MRI), there is an imaging method called Confounder-Corrected Chemical Shift-Encoded MR Imaging as a technique for accurately quantifying fat components. Using this imaging data, data on the effective transverse relaxation rate (R2* value) of the tissue can also be obtained. The effective transverse relaxation rate (R2* value) is known to correlate very well with iron deposition in tissues. In this study, we determined the normal reference value of the effective transverse relaxation rate (R2* value) of the liver in healthy adults, and clarified the correlation with gender and age.

Academic Significance and Societal Importance of the Research Achievements

鉄の過剰蓄積は健康に害を及ぼすことがわかっており、体内の鉄を正確に把握することは重要である。磁気共鳴画像(MRI)における実効横緩和率(R2*値)は組織における鉄沈着の評価に非常に優れている。しかしながら、それを医療に応用するためにはまずその正常基準値を求める必要がある。本研究課題で求められた正常基準値を用いることで実効横緩和率(R2*値)による体内の鉄の臨床的な評価が可能となる。このことは関連する疾患の適切な診断および治療方針の決定につながるものと考えられる。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results)

  • [Journal Article] Bayesian U-Netを用いた造影CTからの腹部臓器の自動抽出における不確実性の有用性の検証2020

    • Author(s)
      政木 勇人、大竹 義人、スーフィー・マーゼン、堀 雅敏、大西 裕満、富山 憲幸、佐藤 嘉伸
    • Journal Title

      日本医用画像工学会大会予稿集

      Volume: 39 Pages: 595-601

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Educational Lecture 30, Gastrointestinal Radiology 3, Diagnostic Imaging of Metabolic and Storage Diseases of the Liver (Fatty Liver Diseases, Iron Overload Diseases, Glycogen Storage Diseases, Wilson’s Disease, and So on, also Including NASH)2020

    • Author(s)
      大西 裕満
    • Organizer
      第79回日本医学放射線学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] CT画像から腹部臓器領域の自動抽出のための大規模データベース構築に向けた不確実性の推定に基づくアクティブラーニングの検証2020

    • Author(s)
      政木 勇人, 大竹 義人, スーフィー・マーゼン, 堀 雅敏, 大西 裕満, 富山 憲幸, 佐藤 嘉伸
    • Organizer
      日本医用画像工学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] びまん性肝疾患の画像診断2019

    • Author(s)
      大西 裕満
    • Organizer
      第47回北大阪放射線ミーティング
    • Related Report
      2019 Research-status Report
  • [Presentation] Quantification of Liver Iron Using MR Imaging Techniques2018

    • Author(s)
      Hiromitsu Onishi
    • Organizer
      第6回最先端放射線医学セミナー
    • Related Report
      2017 Research-status Report
  • [Presentation] Educational Lecture 13: Gastrointestinal Radiology 2: 1. Metabolic Liver Disorders: Fatty Liver Disease, Iron Overload Disease, Glycogen Storage Disease2017

    • Author(s)
      Hiromitsu Onishi
    • Organizer
      第76回日本医学放射線学会総会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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