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Contrast enhancement simulator for MRI using circulation model

Research Project

Project/Area Number 16K19822
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionHiroshima University

Principal Investigator

Toru Higaki  広島大学, 医歯薬保健学研究科(医), 共同研究講座准教授 (80611334)

Research Collaborator AWAI Kazuo  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsガドリニウム造影 / MRI / コンピュータシミュレーション / ガドリニウム造影MRI / 循環シミュレーション / ガドリニウム造影剤 / 造影シミュレーション / 時間濃度曲線 / 造影剤 / 放射線診断学
Outline of Final Research Achievements

By implementing a whole-body circulation model, I developed software that simulates the contrast effect of contrast-enhanced MRI. Whole body contrast agent distribution concentration was calculated by physical simulation. By scanning the contrast agent samples diluted with human blood, the conversion table of contrast agent concentration and MR signal intensity was created. As a result of comparing the data of the contrast enhancement of the patient who actually conducted the contrast MR examination with the data of the contrast enhancement obtained by simulation under the same conditions, it was confirmed that the simulation could be performed with high accuracy. In experiments in which the contrast agent injection rate was changed, it was found that the contrast enhancement was compared between the iodine contrast agent (CT) and the gadolinium contrast agent (MR), and that the behavior was significantly different.

Academic Significance and Societal Importance of the Research Achievements

造影剤を利用したComputed Tomography: CT検査や,Magnetic Resonance: MR検査は,画像上で臓器や病変のコントラストを高めることから,広く臨床で実施されている.造影剤の注入方法は検査目的や患者の条件によって最適化する必要があるが、このような検討は造影CTに対して主に行われてきた。本研究により開発したMR造影シミュレーションソフトウェアを用いることで、MRのガドリニウム造影剤の振る舞いやそこから得られる造影効果を明らかにすることが可能となる。患者ごとに最適な造影法を究明できることから、疾患の診断能を高めるなどの効果が期待される。

Report

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

    (11 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 5 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Contrast enhancement optimizerがもたらす造影プロトコルの個別化2019

    • Author(s)
      檜垣徹、粟井和夫
    • Journal Title

      株式会社根本杏林堂・技術開発リーフレット

      Volume: -

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Minimizing individual variations in arterial enhancement on coronary CT angiographs using “contrast enhancement optimizer”: a prospective randomized single-center study2018

    • Author(s)
      Matsumoto Yoriaki、Higaki Toru、Masuda Takanori、Sato Tomoyasu、Nakamura Yuko、Tatsugami Fuminari、Awai Kazuo
    • Journal Title

      European Radiology

      Volume: Epub Issue: 6 Pages: 2998-3005

    • DOI

      10.1007/s00330-018-5823-2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Contrast enhancement optimizerがもたらす造影プロトコルの個別化2019

    • Author(s)
      檜垣徹
    • Organizer
      第78回日本医学放射線学会総会ランチョンセミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Development a software which assists radiologists to determine optimal contrast material administration protocol at CT: Validation study using a computer simulation.2018

    • Author(s)
      Higaki T, Matsumoto Y , Masuda T, Nakamura Y, Tatsugami F, Awai K.
    • Organizer
      RSNA 2018 - Radiological Society of North America Annual Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 循環動態シミュレータを用いたヨード・Gd造影の最適化2018

    • Author(s)
      檜垣徹
    • Organizer
      第77回日本医学放射線学会総会ランチョンセミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] コンピュータシミュレーションによるGd造影剤の体内動態解析2017

    • Author(s)
      檜垣徹
    • Organizer
      第45回日本核磁気共鳴医学会大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Essential Knowledge About Gadolinium Contrast Agents on Magnetic Resonance Imaging to Plan Optimal Contrast Enhancement Protocols: Graphic Demonstration Using a Computer Simulation.2017

    • Author(s)
      Toru Higaki, Yuko Nakamura, Fuminari Tatsugami, Yukiko Honda, Yuji Akiyama, Kazuo Awai.
    • Organizer
      RSNA (Radiological Society of North America) 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Essential Knowledge About Gadolinium Contrast Agents on Magnetic Resonance Imaging to Plan Optimal Contrast Enhancement Protocols: Graphic Demonstration Using a Computer Simulation.2017

    • Author(s)
      Toru Higaki
    • Organizer
      造影剤を語る会 in Chicago
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Contrast material injection protocols at coronary CT angiorapraphy with short injection duration can yield sufficient arterial enhancement in wide range of cardiac output value: computer simulation study.2016

    • Author(s)
      Higaki T, Nakaura T, Kidoh M, Yuki H, Yamashita Y, Awai K, et al.
    • Organizer
      RSNA2016.
    • Place of Presentation
      Chicago, USA
    • Year and Date
      2016-11-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] MR造影剤の体内動態と造影効果2016

    • Author(s)
      檜垣徹
    • Organizer
      AIMS abdominal imaging
    • Place of Presentation
      東京.
    • Year and Date
      2016-11-05
    • Related Report
      2016 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] シミュレータ、該シミュレータを備える注入装置又は撮像システム、及びシミュレーションプログラム.2018

    • Inventor(s)
      檜垣徹,中村優子,粟井和夫,根本茂,他
    • Industrial Property Rights Holder
      檜垣徹,中村優子,粟井和夫,根本茂,他
    • Industrial Property Rights Type
      特許
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report

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Published: 2016-04-21   Modified: 2021-01-27  

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