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Basic research of anti-tumor efficacy evaluation for intra-arterial injection chemotherapy using ultrasound elastography

Research Project

Project/Area Number 17K16477
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionNara Medical University

Principal Investigator

Taiji Ryosuke  奈良県立医科大学, 医学部附属病院, 研究員 (60773265)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords動注化学療法 / RCN-9腫瘍移植ラット / 造影超音波 / time intensity curve / 抗腫瘍効果判定 / time-intensity curve / VX2腫瘍移植家兎 / 超音波弾性画像 / エラストグラフィ
Outline of Final Research Achievements

To determine the best parameter to collate changes of tumor sizes in time intensity curve (TIC) of contrast-enhanced ultrasonography (CEUS) and to evaluate whether the determined parameter could predict tumor response in intravenous Irinotecan therapy and intra-arterial micellar nanoparticles incorporating SN-38 in a rat colorectal liver metastasis model.
The value k in TIC obtained by CEUS can be a sensitive parameter to predict tumor response in intravenous Irinotecan therapy and intra-arterial therapy using micellar nanoparticles in rat model. Further clinical investigation is mandatory.

Academic Significance and Societal Importance of the Research Achievements

現在、抗腫瘍効果の判定にCTやMRI、FDG-PETが用いられている。これらの検査は診断能や客観性において超音波検査より勝る。一方で超音波検査は低侵襲で廉価であることから繰り返し評価できるという側面がある。そのため超音波検査が高い客観性をもち治療早期からの評価が可能になれば、治療戦略がより良いものとなり、患者の生命予後に大きな影響を持つ。本研究では造影超音波を用いてラットの肝腫瘍を評価し、治療早期から造影超音波のパラメータの有意な変化がみられた。これより本研究成果は超音波による早期での抗腫瘍効果評価の推進に寄与することが期待できる。

Report

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

    (2 results)

All 2019

All Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] Early prediction of tumor response using contrast-enhanced ultrasonography in intra-arterial therapy by micellar nanoparticles in a rat liver tumor model2019

    • Author(s)
      太地 良佑
    • Organizer
      Society of Interventional Radiology (SIR)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of intra-arterial therapy using micellar nanoparticles incorporating SN-38 and early prediction of tumor response in a rat colorectal liver metastasis model2019

    • Author(s)
      太地 良佑
    • Organizer
      Invitational lecture at MD AndersonCancer Center
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2017-04-28   Modified: 2020-03-30  

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