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Development of quality control system for digital mammographic x-ray units to aim reduction of patient dose

Research Project

Project/Area Number 17590452
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Medical sociology
Research InstitutionOsaka University

Principal Investigator

MATSUMOTO Masato  Osaka University, Graduate School of Medicine, Associate Professor, 医学系研究科, 助教授 (50149944)

Co-Investigator(Kenkyū-buntansha) OGATA Yuji  Osaka University, Graduate School of Medicine, Assistant, 医学系研究科, 助手 (60281127)
MAEDA Koji  Hiroshima International University, Dep.Of Clinical Radiology, Assistant, 保健医療学部, 助手 (20330706)
KUBOTA Hideaki  Suzuka Univ.of Medical Science, Dep.Of Medical Engineering, Associate Professor, 医用工学部, 助教授 (30234496)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2006: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2005: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsDigital mammographic x-ray unit / Spectral measurement system / Carbon or acrylic resin scatterer / Digital characteristic curve / Modulation Transfer Function (MTF) / Wiener spectrum / C-D phantom image / Quality control system / ディジタルマンモグラフィシス / CDMAMファントム / 平均乳腺線量 / ディジタル画像の物理特性 / 被曝線量 / 検出能
Research Abstract

The analysis of x-ray spectra is important for quality assurance (QA) and quality control (QC) of radiographic systems. The aim of this study is to measure the digital mammographic x-ray spectra under clinical conditions using a high-resolution Schottky, CdTe detector. Under clinical conditions, the direct measurement of a mammographic spectrum is difficult because of the high photon fluence rates that cause significant detector photon pile-up. An alternative way of measuring the output spectra from a tube is first to measure the 90-degree Compton scattered photons from a given sample. With this set-up detector pile-up is not a problem. From the scattered spectrum one can then use an energy correction and the Klein-Nishina function to reconstruct the actual spectrum incident upon the scattering sample. The verification of whether our spectra measured by the Compton method are accurate was accomplished by comparing exposure rates calculated from the reconstructed spectra to those measur … More ed with an ionization chamber. We used aluminum (Al) filtration ranging in thickness from 0 to 0.8 mm. The difference rates to the dosimeter of the half-value layers (HVLs) obtained for a 27 kV beam were 17.5 % for carbon scatterer and 16.5 % for acrylic resin scatterer. For a 32 kV beam we obtained 12.8 % and 11.4 %. The small differences in HVLs obtained by both techniques suggest that Compton scatter spectroscopy with a high-resolution Schottky CdTe detector is suitable for measuring the digital mammographic x-ray spectra and useful for QA and QC of clinical digital mammographic x-ray equipment.
Evaluation standard of phantom images in mammography guideline (second edition) published on March, 2004 including film outcome of digital images was indicated and evaluation of physical imaging properties (digital characteristic curve, modulation transfer function, noise power (Wiener) spectrum, detective quantum efficiency, detectorbility of CDMAM phantom) of digital mammography was explained. Less

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (25 results)

All 2006 2005

All Journal Article (25 results)

  • [Journal Article] Novel display technique for reference images for visibility of temporal change on radiography -Color digital summation radiography-2006

    • Author(s)
      Ogata Y, Naito H, Tomiyama N, Hamada S, Tsubamoto M, Inoue A, Murai S, Sumikawa H, Ueguchi T, Matsumoto M, Tamura S, Nishinosono H, Nakamura H, Johkoh T
    • Journal Title

      Radiation Medicine 24・1

      Pages: 28-34

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of usefulness of color digital summation radiography in temporally sequential digital radiographs - A phantom study-2006

    • Author(s)
      Ogata Y, Naito H, Tomiyama N, Hamada S, Kozuka T, Koyama M, Tsubamoto M, Murai S, Ueguchi T, Matsumoto M, Tamura S, Nakamura H, Johkoh T
    • Journal Title

      Radiation Medicine 24・3

      Pages: 182-186

    • NAID

      10017480124

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] ディジタルマンモグラフィの物理評価2006

    • Author(s)
      松本政雄
    • Journal Title

      医用画像情報学会雑誌 23・2

      Pages: 13-18

    • NAID

      10019176084

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] 直接型FPDの画質特性と検出特性2006

    • Author(s)
      井手口忠光, 松田勝彦, 氷室和彦, 桑原里依, 宮崎秀庸, 櫨山博幸, 熊澤誠志, 川路康之, 吉田 彰, 松本政雄, 東田善治
    • Journal Title

      日本放射線技術学会雑誌 62・3

      Pages: 425-433

    • NAID

      110004709701

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Evaluation of usefulness of color digital summation radiography for solitary pulmonary nodules on chest radiographs2006

    • Author(s)
      Ogata Y, Naito H, Tomiyama N, Hamada S, Tsubamoto M, Inoue A, Murai S, Sumikawa H, Ueguchi T, Matsumoto M, Tamura S, Nishinosono H, Nakamura H, Johkoh T
    • Journal Title

      Radiation Medicine 24・5

      Pages: 378-384

    • NAID

      10017989881

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Effect of scatterer on mammographic x-ray spectra measured by Compton spectroscopy2006

    • Author(s)
      Masao Matsumoto, Kentaro Onishi, Chikako Tanaka
    • Journal Title

      Radiation Detectors and Their Uses, KEK Proceedings 2006-7

      Pages: 68-77

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Novel display technique for reference images for visibility of temporal change on radiography -Color digital summation radiography-2006

    • Author(s)
      Ogata Y, Naito H, Tomiyama N, Hamada S, Tsubamoto M, Inoue A, Murai S, Sumikawa H, Ueguchi T, Matsumoto M, Tamura S, Nishinosono H, Nakamura H, Johkoh T.
    • Journal Title

      Radiation Medicine 24・1

      Pages: 28-34

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of usefulness of color digital summation radiography in temporally sequential digital radiographs -A phantom study-2006

    • Author(s)
      Ogata Y, Naito H, Tomiyama N, Hamada S, Kozuka T, Koyama M, Tsubamoto M, Murai S, Ueguchi T, Matsumoto M, Tamura S, Nakamura H, Johkoh T
    • Journal Title

      Radiation Medicine 24・3

      Pages: 182-186

    • NAID

      10017480124

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of physical imaging properties of Digital mammography2006

    • Author(s)
      M.Matsumoto
    • Journal Title

      Medical Imaging and Information Sciences 23・2

      Pages: 13-18

    • NAID

      10019176084

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Image quality and detection performance of a direct digital radiography system2006

    • Author(s)
      T.Ideguchi, K.Matsuda, K.Himuro, R.Kuwahara, H.Miyazaki, H.Hazeyama, S.Kumazawa, Y.Kawaji, A.Yoshida, M.Matsumoto, Y.Higashida
    • Journal Title

      Japanese Journal of Radiological Technology 62・3

      Pages: 425-433

    • NAID

      110004709701

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of grey-scale standard display function as a calibration tool for diagnostic liquid crystal display monitors using psychophysical analysis2005

    • Author(s)
      Y.Asai, Y.Shintani, M.Yamaguchi, M.Uemura, M.Matsumoto, H.Kanamori
    • Journal Title

      Medical & Biological Engineering & Computing 43

      Pages: 319-324

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Compton-scattering measurement of diagnostic x-ray spectrum using high-resolution Schottky CdTe detector2005

    • Author(s)
      K.Maeda, M.Matsumoto, A.Taniguchi
    • Journal Title

      Medical Physics 32・6

      Pages: 1542-1547

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 診断用X線装置のスペクトル測定2005

    • Author(s)
      松本政雄
    • Journal Title

      医学物理 25・Sup.4

      Pages: 1-24

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Physical imaging properties and low-contrast performance of a newly developed flat-panel digital radiographic system2005

    • Author(s)
      M.Matsumoto, T.Yamazaki, M.Nokita, S.Hayashida, A.Yoshida, T.Ideguchi, K.Himuro, M.Ohki, S.Kumazawa, Y.Higashida
    • Journal Title

      日本放射線技術学会雑誌 61・12

      Pages: 1656-1665

    • NAID

      110004756035

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Spectral measurement of diagnostic x-ray unit2005

    • Author(s)
      M.Matsumoto
    • Journal Title

      Japanese Journal of Medical Physics 25・Sup.4

      Pages: 1-24

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Physical imaging properties and low-contrast performance of a newly developed flat-panel digital radiographic system2005

    • Author(s)
      M.Matsumoto, T.Yamazaki, M.Nokita, S.Hayashida, A.Yoshida, T.Ideguchi, K.Himuro, M.Ohki, S.Kumazawa, Y.Higashida
    • Journal Title

      Japanese Journal of Radiological Technology 61・12

      Pages: 1656-1665

    • NAID

      110004756035

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Compton-scattering measurement of diagnostic x-ray spectrum using high-resolution Schottky CdTe detector2005

    • Author(s)
      Koji Maeda, Masao Matsumoto, Akira Taniguchi
    • Journal Title

      Medical Physics 32・6

      Pages: 1542-1547

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Evalution of grey-scale standard display function as a calibration Tool for diagnostic liquid crystal display monitors using psychophysical analysis2005

    • Author(s)
      Y.Asai, Y.Shintani, M.Yamaguchi, M.Uemura, M.Matsumoto, H.Kanamori
    • Journal Title

      Medical & Biological Engineering & Computing 43

      Pages: 319-324

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Physical imaging properties and low-contrast performance of a newly developed flat-panel digital radiographic system2005

    • Author(s)
      M.Matsumoto, T.Yamazaki, M.Nokita, S.Hayashida, et al.
    • Journal Title

      日本放射線技術学会雑誌 61・12

      Pages: 1656-1665

    • NAID

      110004756035

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Measurement of position dependence of spectral distribution in primary x-ray beam of CT system using Compton spectroscopy2005

    • Author(s)
      Masao Matsumoto, Koji Maeda
    • Journal Title

      Proceeding of the 19^<th> Workshop on Radiation Detectors and Their Uses 2005・12

      Pages: 32-41

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Compton spectroscopy for measuring diagnostic x-ray spectrum using high-resolution Schottky CdTe detector2005

    • Author(s)
      Koji Maeda, Masao Matsumoto
    • Journal Title

      Japanese Journal of Medical Physics 25・Sup.3-1

      Pages: 178-181

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Measurement of primary x-ray spectrum of CT system using Compton spectroscopy2005

    • Author(s)
      Masao Matsumoto, Koji Maeda
    • Journal Title

      Japanese Journal of Medical Physics 25・Sup.3-1

      Pages: 182-185

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Magnification radiography of microcalicifications using micro-focus fluorescent x-rays2005

    • Author(s)
      F.Toyofuku, Y.Higashida, K.Tokumori, A.Yoshida, M.Matsumoto, T.Yao, et al.
    • Journal Title

      Japanese Journal of Medical Physics 25・Sup.3-2

      Pages: 1-2

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Compton spectroscopy for measuring mammographic x-ray spectra using high-resolution Schottky CdTe detector2005

    • Author(s)
      Koji Maeda, Masao Matsumoto
    • Journal Title

      Japanese Journal of Medical Physics 25・Sup.3-2

      Pages: 5-8

    • Related Report
      2005 Annual Research Report
  • [Journal Article] ディジタルマンモグラフィにおける最適化撮影のための画質と被曝線量の検討2005

    • Author(s)
      松本政雄, 渡部桃子, 小湊千幸, 井手口忠光, 田中 勇,他
    • Journal Title

      日本写真学会誌 68・別冊2

      Pages: 33-34

    • NAID

      130004284799

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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