Mammography装置の線量測定 Dose measurment of mammographic equipment

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著者

    • 西澤 かな枝 NISHIZAWA K
    • 放射線医学総合研究所 人間環境研究部 Division of Human Radiation Environment, National Institute of Radiological Sciences
    • 松本 雅紀 MATSUMOTO Y
    • 放射線医学総合研究所 人間環境研究部 Division of Human Radiation Environment, National Institute of Radiological Sciences
    • 石川 徹夫 ISHIKAWA T
    • 放射線医学総合研究所 人間環境研究部 Division of Human Radiation Environment, National Institute of Radiological Sciences
    • 秋山 芳久 AKIYAMA Y
    • 千葉県がんセンター放射線科物理室 Division of Radiation Physics, Chiba prefecture Cancer Center
    • 岩井 一男 IWAI K
    • 日本大学 歯学部 放射線学教室 Department of Radiation, Nippon Dental University

抄録

For the optimization of the risk-benefit in mammography, accurate dosimetry requires standardization of both the methodology and dosimeter.<BR>One of the important issues is the asse ssment of the average glandular dose under mammography. To this end, accurate measurement of half value layer and that of air kerma are of primary importance. To see the variation among facilities, the half value layer and the entrance dose were measured at eight facilities. In this series of measurement, a shallow type ionization chamber designed to fit with soft X-ray used in mammography was used.<BR>This comparison indicates that, with the same radiographic condit ions, the variation of the dose among equipment was such that the ratio of the highest to the lowest was almost two. While the variation of the half value layer among equipment under the fixed tube voltage was as high as 15%.

収録刊行物

  • 放射線医学物理

    放射線医学物理 18(4), 351-355, 1998-12-01

    Japan Society of Medical Physics

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各種コード

  • NII論文ID(NAID)
    10003725047
  • NII書誌ID(NCID)
    AA11137895
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09188010
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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