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Fundamental Study of Heavy Radiography

Research Project

Project/Area Number 10670864
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionIBARAKI PREFECTURAL UNIVERSITY OF HEALTH SCIENCES

Principal Investigator

INADA Tetsuo  Ibaraki Prefectural University of Health Sciences, Dept. of Radiological Sciences, Prof., 保健医療学部, 教授 (50114038)

Co-Investigator(Kenkyū-buntansha) SATOH Hitoshi  Ibaraki Prefectural University of Health Sciences, Dept. of Radiological Sciences, Assistant, 保健医療学部, 助手 (90285057)
ABE Shinji  Ibaraki Prefectural University of Health Sciences, Dept. of Radiological Sciences, Assistant, 保健医療学部, 講師 (00274978)
NISHIMURA Katsuyuki  Ibaraki Prefectural University of Health Sciences, Dept. of Radiological Sciences, Prof., 保健医療学部, 教授 (10129158)
SEKINE Norio  Ibaraki Prefectural University of Health Sciences, Dept. of Radiological Sciences, Assistant, 保健医療学部, 助手 (70295434)
FUJISAKI Tatsuya  Ibaraki Prefectural University of Health Sciences, Dept. of Radiological Sciences, Assistant, 保健医療学部, 助手 (00285058)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1999: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1998: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsHeavy Ion Radiography / Carbon Ion Beam / Density Resolution / Quantum Mottle / Radiation Injury / Microchannel-plate / CT-image Reconstruction / Residual Range Distribution / 重イオン線 / ラジオグラフィ / コントラスト分解能 / MTF(Modular Transfer Function) / 撮影被曝線量 / 画像情報処理 / 残留飛程 / 重イオンCT
Research Abstract

Studies of efficacy on heavy ion radiography have been performed in comparison with X-ray radiography. It was suggested that heavy ion radiography gave superior imaging for low contrast tumors at relatively low radiation levels. In heavy ion radiography, small difference of tissue density in deep seated area can be recorded on films as the difference of optical density by using a distal edge of the Bragg peak. This shows that the difference in optical density is related to the difference of the residual range at the film position. The residual range is determined as the integrated stopping power along the path of particle. It was suggested that the two dimensional distribution of relative stopping power could be calculated by the use of a set of data, namely, one dimensional (1D) residual range distributions for the different directions over 360 degrees. The residual range is determined as the accumulated effect of stopping power along the path of charged particle. If we have the set of images showing residual range distribution for the different directions over 360 degrees, the distribution of electron density could be calculated by the use of stopping power formula. This work begin with formulation of algorithm to obtain the CT image of electron density from the spatial distribution of residual range. In the previous study the relations between optical density and residual range and those between optical density and absorbed dose were determined using film system and the difference of residual ranges at each internal organ of small animal. In the present study the fluorescent screen and video-camera with I.I. system was adapted to shorten the image collection time. One dimentional distribution of residual range was obtained from the series of projection images of cylindrical aclylate phantom experimentally by changing thickness of the range shifter.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 西村克之: "残留飛程分布の測定による重イオンCT"放射線医学物理. 18. 114-117 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nishimura, K: "Residual range distribution measured by heavy ion radiogrophy"Jpn. J. Med. Phys.. 19. 108-113 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Abe, S: "Sensitometric Properties in Heavy Ion Radiography"Jan. J. Med. Phys.. 19. 137-140 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nishimura, K: "Heavy Ion CT Recons Iructed fom Residual Ronge Distribution Measured by Rangeshifter and Fluoroscopy System"Jpn. J. Med. Phys.. 19. 151-154 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Nishimura, K: "Heavy Ion CT by Meauring Residual Ramge Distribution"Report on the Research Prodect with Heavy Ions at NIRS-HIMAC. NIRS-M-133. 238-240 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] INADA,T., NISHIMURA,K., SATOH,H., et al.: "Residual range distribution measured by heavy ion radiography"Report on the Research Project with Heavy Ions at NIRS-HIMAC, NIRS-M-122, HIMAC-021. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] NISHIMURA,K., INADA,T., SATOH,H., et al.: "Residual range distribution measured by heavy ion radiography"Jpn J Med Phys. 19-2. 108-113 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] ABE,S., NISHIMURA,K., IMAICHI,S., SATOH,H., INADA,T., et al.: "Sensitometric Properties in Heavy Ion Radiography"Jpn J Med Phys. 19-Supl. 137-140 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] NISHIMURA,K., SATOH,H., INADA.T., et al.: "Heavy Ion CT Reconstructed from Residual Range Distribution Measured by Range Shifter and Fluoroscopy System"Jpn J Med Phys. 19-Supl. 151-154 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] NISHIMURA,K., SATOH,H., INADA,T., et al.: "Heavy Ion CT by Measuring Residual Range Distribution"Report on the Research Project with Heavy Ions at NIRS-HIMAC NIRS-M-133, HIMAC-023. 238-240 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] NISHIMURA,K., ABE,S., INADA,T., et al.: "Heavy Ion CT Reconstructed from Range Shift Distribution Measured by 2D Detection System"Proceeding of World Congress on Medical Physics and Biomedical Engineering. accepted. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] NISHIMURA,K., SATOH,H., ABE,S., INADA,T.: "Fundamental study on heavy ion radiography-Heavy Ion CT Reconstructed from Residual Range Shift Distribution Measured by 2D Detection System"Report on the Research Project with Heavy Ions at NIRS-HIMAC, NIRS-M-143. accepted. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 西村克之: "残留飛程分布の測定による重イオンCT"放射線医学物理. 18. 114-117 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nishimura,K: "Residual range distribution measured by heavy ion radiography"Jpn.J.Med.Phys.. 19. 108-113 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Abe,S: "Sensitometric Properties in Heavy Ion Radiography"Jpn.J.Med.Phys.. 19. 137-140 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nishimura,K: "Heavy Ion CT Reconstructed from Residual Range Distribution Measured by Range Shiften and Fluoroscopy System"Jpn.J.Med.Phys.. 19. 151-154 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Nishimura,K: "Heacvy Ion CT by Mesuring Residual Range Distribution"Repert on the Research Project with Heary Ions at NIRS-HIMAC. NIRS-M-133. 238-240 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Nishimura: "Heavy Ion CT by Measuring Residual Range Distribution" Japanese Journal of Medical Physics. 18・4. 114-117 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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