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Super-Magnification Radiography Using Micro-Focus Fluorescent X-rays Generated by Synchrotron Radiation

Research Project

Project/Area Number 13470186
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionKyushu University

Principal Investigator

TOYOFUKU Fukai  Kyushu University, Faculty of Medicine, Prof., 医学部, 教授 (10117179)

Co-Investigator(Kenkyū-buntansha) OHKI Masafumi  Kyushu University, Faculty of Medicine, Prof., 医学部, 教授 (10160441)
TOKUMORI Kenji  Kyushu University, Faculty of Medicine, Assistant, 大学院・歯学研究院, 助手 (40253463)
HIGASHIDA Yoshiharu  Kyushu University, Faculty of Medicine, Prof., 医学部, 教授 (80128305)
UYAMA Chikao  Hiroshima International Univ, Prof., 保健医療学部, 教授 (30026059)
TERASHIMA Hiromi  Kyushu University, Faculty of Medicine, Prof., 医学部, 教授 (40140917)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥14,200,000 (Direct Cost: ¥14,200,000)
Fiscal Year 2003: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2002: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥9,200,000 (Direct Cost: ¥9,200,000)
Keywordssynvhrotron radiation / fluorescent x-ray / magnifivation radiography / mammography / マンモグラフィ / 単色X線
Research Abstract

The high spatial resolution requirements of x-ray imaging such as mammography demand the use of very small focal spots. We have developed a micro-focus fluorescent x-ray source with a focal spot size of 0.05 to 0.01mm for magnification imaging using a 6.5 GeV synchrotron radiation(SR) storage ring at Tsukuba(Japan). The micro-focus fluorescent x-ray source is composed of a collimator system and a target box. The incident white x-ray beam from the bending magnet irradiates a metal target and fluorescent x-rays are extracted to the transverse directions. The beam was collimated by using two slit collimators which were adjusted by the motorized stages. The effective focal spot size of 0.05,0.02,and 0.01mm^2 was obtained by changing the width of the slits. Fluorescent x-rays, which range from about 8keV to 68keV were generated by changing the target materials.
Energy spectra of the fluorescent x-rays were measured by using a CdTe detector. In case of the Mo target, K_a, (17.5keV) and K_b(19.6keV) fluorescent x-rays were dominant, and the Compton scattered x-rays were almost negligible. The modulation transfer function(MTF) was also measured using the edge method. In the measurement, a 4x magnified edge image was taken using a non-screen dental x-ray film. Magnification radiography was performed by using non-screen films and imaging plates(IPs). The magnified images of the phantoms, such as CDMAM and other phantoms with simulated microcalsifications, show the potential applications of the present method to high resolution mammography
The micro-focus fluorescent x-ray source using SR proved to be useful for high resolution magnification imaging

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report

Research Products

(20 results)

All Other

All Publications (20 results)

  • [Publications] 豊福不可依, 東田善治, 徳森謙二, 他: "微小焦点蛍光X線による超拡大撮影"医学物理. 24 Sup.2. 57-58 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 徳森謙二, 豊福不可依, 東田善治, 他: "放射光を用いた微小焦点蛍光X線源システム"医学物理. 24 Sup.2. 55-56 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 高木理恵, 東田善治, 坂本祐二, 他: "アモルファスシリコンを検出器に用いたフルデジタルマンモグラフィシステム"日本乳癌検診学会雑誌. 13. 88-96 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 井手口忠光, 東田善治, 永室和彦, 他: "アモルファスシリコンを検出器に用いたフルデジタルマンモグラフィシステム:基礎的画像特性と信号検出"日本放射線技術学会雑誌. 60. 399-405 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 豊福不可依, 東田善治, 徳森謙二, 他: "放射光を用いた微小焦点蛍光X線による拡大イメージング"医学物理. 23. 127-130 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] F.Toyofuku, Y.Higashida, et al.: "Super-Magnification Imaging Using Micro-Focus Fluorescent X-rays"J.J.Med.Phys.. 57-58 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Tokumori, F.Toyofuku, et al.: "Micro-Focus Fluorescent X-ray Imaging System Using Synchrotron Radiation"J.J.Med.Phys.. 55-56 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Takagi, Y.Higashida, et al.: "Full Digital Mammography System with an Amorphous Silicon-based Flat Panel Detector"J.Jpn.Assoc.Breast Cancer Screen. 13. 88-96 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ideguchi, Y.Higashida, et al.: "Full Digital Mammography System with an Amorphous Silicon-based Flat Panel Detector: Fundamental Physical Characteristics and Signal Detection"Jpn.J.Radiol.Technol.. 60. 399-405 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] F.Toyofuku, Y.Higashida, et al.J: "Super-Magnification Imaging Using Micro-Focus Fluorescent X-rays"J.J.Med.Phys.. 127-130 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] F.Toyofuku et al.: "Magnification Imaging Using Micro-Focus Fluorescent X-Rays Generated by Synchrotron Radiation"Proc. of the World Congress on Medical Physics and Biomedical Engineering (Sydney 2003). CD-ROM. (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Tokumori et al.: "Fan-beam Dichromatic X-ray CT System Using Fluorescent X-Rays Excited by Synchrotron Radiation"Proc. of the World Congress on Medical Physics and Biomedical Engineering (Sydney 2003). CD-ROM. (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 豊福不可依, 東田善治, 徳森謙二他: "放射光を用いた微少焦点蛍光X線による拡大イメージング"医学物理. 23,Sup.3. 127-130 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] F.Toyofuku et al.: "Comparis on of parallel and fan-beam monochromatic X-ray CT using Synchrotron Radiation"Proc. of the 3^<rd> Korea-Japan Joint Meeting on Medical Physics. 407-410 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Tokumori et al.: "A monochromatic X-ray CT using CdTe array detector with variable spatial resolution"Proc. of the 3^<rd> Korea-Japan Joint Meeting on Medical Physics. 411-414 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.Uyama et al.: "Biomedical imaging center in Spring-8"Nucl. Instrum. Meth. A468. 1338-1341 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 坂本弘巳 他: "胸部撮影における重金属フィルタの物理特性と画像特性"医学物理. 21巻・2号. 95-105 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 豊福不可依 他: "2焦点蛍光X線源による単色X線ステレオ撮影"医学物理. 21巻Sup.3. 88-91 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 田畑信幸 他: "胸部CR画像における経時的差分画像法を用いたびまん性肺疾患の評価 -模擬病変を用いた検出能と認識能の比較-"日本放射線技術学会雑誌. 57巻・10号. 1218-1224 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 坂本弘巳 他: "K-エッジフィルタを組み合わせた胸部X線撮影 -実験およびモンテカルロシミュレーションを用いた研究-"久留米医学会雑誌. 64巻・9-12号. 285-294 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-03-31   Modified: 2016-04-21  

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