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X-ray spectra analysis from K-absorption edge to maximum energy for the improvement of IVR low-contrast

Research Project

Project/Area Number 09670919
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

KOSHIDA Kichiro  Faculty of Medcine, Kanazawa University Associate professor, 医学部, 助教授 (90020023)

Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1998: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1997: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsIVR / K-absorption edge / improvement of low-contrast
Research Abstract

A examination of X-ray spectra analysis for the improvement of clinical technique and X-ray equipment was conducted.
(1)A comparison of X-ray spectrum of the water and acrylic resin showed that the X-ray transisslon ratio of acrylic resin was high for low energy resions, and low for high energy resions. This constitutes a sonsiderable problem when acrylic resin is used.
(2)When filters made of aluminum, copper, niobium and molybdenum were Inserted, It was found that the attenuation ratios could be obtained with these filters as If the attenuation ratio was ca1culated by using mass attenuation coefficients (which have been suggested by Hubbell) without stripping correction. The addition of the Nb and Mo filters reduced In the photons of lower X-ray energy, and transmitted the photons of high-energy X-rays. The addition of the Al filter tended to have the effect, but less evident, while the effect of the Cu filter was between that of Nb or Mo and of Al.
(3)The X-ray transmission, ratio of the screen was also measured. For the range from 40 keV to 70 keV, the orthochromatic screen should reduced the photons of X-ray, - but for anly other range the regular screen should reduced the photons.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report

Research Products

(3 results)

All Other

All Publications (3 results)

  • [Publications] 越田 吉郎: "付加フィルタによって減弱するX線スペクトル解析のための基礎的検討" 金沢大学医学部保健学科紀要. 22. 101-109 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kichiro Koshida: "A fundamental examination for X-ray spectra analysis attenuating by added filter" Memoirs Health Sci.Med.Kanazawa Univ.22. 101-109 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 越田吉郎: "付加フィルタによって減弱するX線スペクトル解析のための基礎的検討" 金沢大学医学部保健学科紀要. 22巻. 101-109 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1997-03-31   Modified: 2016-04-21  

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