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Establishment of optimization method of dose and image quality in infant radiography

Research Project

Project/Area Number 16K10322
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Radiation science
Research InstitutionKyushu University

Principal Investigator

Fujibuchi Toshioh  九州大学, 医学研究院, 准教授 (20375843)

Co-Investigator(Kenkyū-buntansha) 杜下 淳次  九州大学, 医学研究院, 教授 (40271473)
藪内 英剛  九州大学, 医学研究院, 教授 (70380623)
松浦 俊治  九州大学, 大学病院, 准教授 (10532856)
木下 義晶  新潟大学, 医歯学系, 准教授 (80345529)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsモンテカルロ / テトラファントム / 乳児 / 3Dプリンタ / 臓器線量 / 小児 / モンテカルロシミュレーション / X線 / 臓器吸収線量 / 線量評価 / 画質評価 / 被ばく
Outline of Final Research Achievements

X-ray examinations have become essential in medical facilities. In particular, chest radiography is a frequently performed examination, which causes patient exposure. Children have higher radiation sensitivity than adults, and it is necessary to set appropriate imaging conditions and to evaluate exposure dose at the time of examination. In this study, we developed a polygon phantom that can be output by 3D printer for children with variable system from CT volume data, and evaluated the method of evaluating organ absorbed dose by Monte Carlo simulation, and clarified the printing condition of phantom that is 3D printed out close to the real body.

Academic Significance and Societal Importance of the Research Achievements

医療施設においてX線を用いた検査は有用であるものの、被ばくすることから検査の正当性と線量の最適化が求められている。特に小児では放射線感受性が高いことから被ばくについて配慮する必要があるが、医療機関で線量や画質を検証することはファントムや線量計等高額であることからほとんどの施設では実施が困難である。そこで3Dプリンタを用いて安価で容易に画質を評価する手法を開発した。本手法はどの医療機関においても実施可能であり、質の高い放射線診療の提供につなげることができる。

Report

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

    (4 results)

All 2019 2017 2016

All Presentation (4 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] Current status of medical exposure in CT examination and patient dose management2019

    • Author(s)
      T. Fujibuchi
    • Organizer
      PITFMB-SEACOMP 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 小児胸部撮影における臓器吸収線量評価のための連続四面体ファントムの開発2017

    • Author(s)
      佐藤 直紀、藤淵 俊王、藪内 英剛
    • Organizer
      日本保健物理学会第50回研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] Development of the Computational Human Thoracic Phantom and Estimation of the Organ Absorbed Dose in the Chest Radiography Using Monte Carlo Simulation2017

    • Author(s)
      N. Sato, T. Fujibuchi, H. Yabuuchi
    • Organizer
      2017 AAPM Annual Meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Creating a computational thoracic phantom for evaluation of the organ dose using Monte Carlo simulation2016

    • Author(s)
      Naoki Sato, Toshioh Fujibuchi
    • Organizer
      32nd International Conference on Medical Physics
    • Place of Presentation
      Bangkok
    • Year and Date
      2016-12-09
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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

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