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Clinical application of noise reduction method applicable by shifting reconstruction phase

Research Project

Project/Area Number 16K19819
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionNational Cardiovascular Center Research Institute (2017-2018)
Kobe University (2016)

Principal Investigator

Nishii Tatsuya  国立研究開発法人国立循環器病研究センター, 病院, 医師 (20749345)

Research Collaborator Kono Atsushi  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsノイズ低減 / CT / 心臓CT / 放射線 / 医療画像
Outline of Final Research Achievements

The present study using clinical images has shown that our proposed noise-reduction method is compatible with image quality improvement with substantial noise reduction and security of quantitative parameters obtained from the CT examination. Further, we could maintain the image quality as well as the radiation dose reduction and the contrast agent amount reduction using this noise-reduction method. However, there is a limitation in this noise-reduction method that a sufficient effect can not be obtained in terms of heart rate and arrhythmia at the time of CT examination.

Academic Significance and Societal Importance of the Research Achievements

CT画像における新たなノイズ低減法である本手法が実際の臨床画像に対して利用可能を検証した本研究より、検査時の心拍数や不整脈という点において一部制約があるという課題が明らかになり、その一方で、臨床画像においても強力なノイズ低減による画質向上を可能にしつつ、CT検査から得られる定量的なパラメータである計測値や狭窄度も担保されることが示された。また撮影に必要となる被ばく量および使用する造影剤量を減少しても、本法による画質維持によって、これまでの画像と同様に得られることが示され、CT検査の低侵襲化に繋がる点は本研究の社会的に重要な知見である。

Report

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

    (3 results)

All 2019 2017

All Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Intensified Imaging of the Septal Branch in Coronary CT Angiography with the Four-dimensional Noise Reduction2019

    • Author(s)
      Tatsuya Nishii, Satoshi Higuchi, Atsushi K Kono, Yasuhiro Hamatani, Hideaki Kanzaki , Chisato Izumi , Tetsuya Fukuda
    • Organizer
      The 13th Congress of the Asian Society of Cardiovascular Imaging
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Basal Ring Area Measurement in the Prospective Electrocardiogram-Triggered High-Pitch Double-Spiral Scan: Comparisons with Retrospective Single Spiral Scan2017

    • Author(s)
      Tatsuya Nishii, Takayoshi Toba, Shumpei Mori, Natsuko Tahara, Yu Izawa, Shinsuke Shimoyama, Yoshiaki Watanabe, Atsushi K Kono, Satoru Takahashi, Kazuro Sugimura
    • Organizer
      The 11th Congress of Asian Society of Cardiovascular Imaging
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 二管球CTを用いた心臓CTに対する「位相差画像」を用いた四次元ノイズ低減法の最適化2017

    • Author(s)
      西井達矢 下山真介、渡邊慶明、河野淳、末廣瑛里奈、関谷俊範、高橋哲、杉村和朗
    • Organizer
      心臓血管放射線研究会
    • Place of Presentation
      ホテルグリンパーク津(三重県津市)
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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