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Challenge to platinum imaging on single source dual energy CT

Research Project

Project/Area Number 15K19762
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionAsahikawa Medical College

Principal Investigator

Sasaki Tomoaki  旭川医科大学, 医学部, 講師 (60586874)

Project Period (FY) 2015-04-01 – 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 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsDual energy CT / プラチナ製剤 / 拡散強調像 / 脊索腫 / 脈絡叢腫瘍 / 見かけの拡散係数 / シスプラチン
Outline of Final Research Achievements

Platinum, the atomic number 78, is a major component of a chemotherapy medication, such as cisplatin. Dual energy CT uses two different types of energy to estimate the component of the target, which might have a potential to detect a platinum in the tissue. In a vitro experiment, the lower voltage reconstruction images can show the higher density. And the highest concentration’s sample was detected as the highest density. However, even the highest concentration’s sample, which was not permitted to inject to human subjects, had only slight changes on CT images. It was not enough to detect in vivo.

Academic Significance and Societal Importance of the Research Achievements

核磁気共鳴画像における比較的稀な脳腫瘍である脈絡叢腫瘍と脊椎腫瘍の一つである脊索腫について、腫瘍の細胞密度を反映するとされる拡散強調画像の特に予後予測における役割について評価した。
脈絡叢腫瘍は良性から悪性までの3グループに再分類されている。拡散強調画像で腫瘍全体を評価すると、良性は細胞密度が低く、悪性度が上がるにつれて細胞密度が低くなることが示された。
脊索腫は低悪性度の脊椎腫瘍で、場所からも全摘出が難しく、再発を繰り返す腫瘍の一つである。今回、再発を繰り返すことと、経過で再発腫瘍の細胞密度が低くなっていく可能性が示された。また腫瘍の細胞密度が低いことが予後不良の一因子である可能性が示された。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (11 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 4 results)

  • [Int'l Joint Research] University of Iowa(米国)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Roles of the apparent diffusion coefficient and tumor volume in predicting tumor grade in patients with choroid plexus tumors.2018

    • Author(s)
      Sasaki T, Kim J, Moritani T, et al.
    • Journal Title

      Neuroradiology

      Volume: 60 Issue: 5 Pages: 479-486

    • DOI

      10.1007/s00234-018-2008-2

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of the Apparent Diffusion Coefficient as a Predictor of Tumor Progression in Patients with Chordoma2018

    • Author(s)
      Sasaki T.、Moritani T.、Belay A.、Capizzano A.A.、Sato S.P.、Sato Y.、Kirby P.、Ishitoya S.、Oya A.、Toda M.、Takahashi K.
    • Journal Title

      American Journal of Neuroradiology

      Volume: 39 Issue: 7 Pages: 1316-1321

    • DOI

      10.3174/ajnr.a5664

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of the Apparent Diffusion Coefficient as a Predictor of Tumor Progression in Patients with Chordoma2018

    • Author(s)
      Sasaki T, Moritani T, Belay A, et al.
    • Journal Title

      American Journal of Neuroradiology

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 脊索腫の典型、非典型画像所見および予後因子について2019

    • Author(s)
      佐々木智章
    • Organizer
      第78回日本医学放射線学会総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ADC値は術後脊索 腫の腫瘍増殖能の予測できるか?2018

    • Author(s)
      Sasaki T, Moritani T, Belay A, et al.
    • Organizer
      第46回日本磁気共鳴医学界大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Typical and Atypical Imaging Findings of Chordomas with Pathologic Correlation2017

    • Author(s)
      T Sasaki, T Moritani, T Sato, A Capizzano, J Hodgson, U Shafique, Y Sato, A Oya, M Toda, P Kirby
    • Organizer
      ASNR 55th Annual Meeting
    • Place of Presentation
      Long Beach, California
    • Year and Date
      2017-04-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Typical and Atypical MR Imaging Findings of Choroid Plexus Tumors with Genetics and Pathologic Correlation2017

    • Author(s)
      T Sasaki, T Moritani, T Sato, A Capizzano, Y Sato, I Elhelf, J Guan, A Oya, M Toda, P Kirby
    • Organizer
      ASNR 55th Annual Meeting
    • Place of Presentation
      Long Beach, California
    • Year and Date
      2017-04-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Imaging, Pathology and Molecular Biology of Pediatric Intra-Axial Brain Tumors2017

    • Author(s)
      T Sasaki, T Moritani, T Sato, A Capizzano, Y Sato, P Kirby, M Sato
    • Organizer
      ASNR 55th Annual Meeting
    • Place of Presentation
      Long Beach, California
    • Year and Date
      2017-04-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] The role of apparent diffusion coefficient in patients with choroid plexus tumors2017

    • Author(s)
      T Sasaki, J Kim, T Moritani et al.
    • Organizer
      RSNA 2017, 103rd Scientific Assembly and Annual Meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] DECTにおけるPt描出に向けての基礎的検討2016

    • Author(s)
      佐々木智章
    • Organizer
      第134回日本医学放射線学会北日本地方会
    • Place of Presentation
      札幌市
    • Year and Date
      2016-06-18
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2022-02-16  

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