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Optimization of Clinical X-ray Computed Tomography Scanning Parameters for Iterative Reconstruction

Research Project

Project/Area Number 17K16455
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

Kondo Masatoshi  九州大学, 大学病院, 診療放射線技師 (10568968)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsCT / 逐次近似再構成 / 投影数 / エックス線 / ファントム / 医学放射線
Outline of Final Research Achievements

Higher view rate (large numbers of the projection) had a potential to achieve superior image noise suppression in abdominal CT with model based iterative reconstruction (new reconstruction method). This was conformed in both the phantom and clinical studies compared with 2400 and 1200 views.

Academic Significance and Societal Importance of the Research Achievements

英国を含む14か国での医療被ばくによる発がんリスクを推定し,誘発される発がん率が非常に高いとの報告がある.逐次近似再構成は,画像ノイズの極めて少ない画像を再構成できる技術として,2011年に商用化された.投影数の多い撮像パラメータを用いることで,逐次近似再構成のノイズ低減効果は向上することが明らかとなった.この知見は,今後の低線量撮影法の確立,および我が国におけるX線CTの開発に応用可能である.

Report

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

    (4 results)

All 2019 2018

All Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Presentation] Superior image noise suppression with higher view rate in abdominal CT with model based iterative reconstruction2019

    • Author(s)
      M. Kondo, A. Nishie, N. Fujita, K. Morita, Y. Sakai, K. Hioki, T. Kato;
    • Organizer
      ECR2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Superior image noise suppression with higher view rate in abdominal CT with model based iterative reconstruction: a phantom study2018

    • Author(s)
      Masatoshi Kondo
    • Organizer
      European Congress of Radiology 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Superior Image Noise Suppression with Higher View Rate in Abdominal CT with Model Based Iterative Reconstruction: A Phantom Study2018

    • Author(s)
      近藤雅敏
    • Organizer
      日本放射線技術学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] X線CTにおける逐次近似再構成に最適な撮像パラメータの検討2018

    • Author(s)
      近藤雅敏
    • Organizer
      全国国立大学放射線技師会第2回学術サミット
    • Related Report
      2017 Research-status Report
    • Invited

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

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