Evaluation of Linearity for the Radiophotoluminescence Glass Dosimeter Based on Monochromatic X-rays

• Shimozato Tomohiro

  Nagoya University School of Health Sciences JASRI

• Tamiya Tadashi

  Nagoya University School of Health Sciences JASRI

• Tabushi Katsuyoshi

  Nagoya University School of Health Sciences JASRI

• Koyama Shuji

  Nagoya University School of Health Sciences JASRI

• Yoshioka Setsu

  Nagoya University School of Health Sciences JASRI

• Obata Yasunori

  Nagoya University School of Health Sciences JASRI

• Tsuzaka Masatoshi

  Nagoya University School of Health Sciences JASRI

• Narita Norihiko

  Nagoya University School of Health Sciences JASRI

• Uruga Tomoya

  Nagoya University School of Health Sciences JASRI

• Ban Shuichi

  Nagoya University School of Health Sciences KEK

• Namito Yoshihito

  Nagoya University School of Health Sciences KEK

• Ikegami Toru

  Nagoya University School of Health Sciences Asahi Technoglass Co

抄録

Although low energy X-rays have been utilized for mammography, their safety in medical use is a matter of concern. Characteristics of the radiophotoluminescence glass dosimeter, GD-403, consisting of a glass element and filters, were investigated with respect to monochromatic X-rays obtained from a synchrotron radiation for personal monitoring of low energy photons. We focused on low energy X-rays ranging from 8 to 20keV to study the linearity of the GD-403 response between photon fluence and dose equivalent. The GD-403 was placed on a tough water phantom and irradiated using an 11-15mm×0.1-7mm beam for modulation of the photon fluence. The tough water phantom could be moved through a distance of 110-150mm with a stepping motor. For the dose equivalent at 1 cm depth (H1),3mm (H3) and 70, μm (H70), the GD-403 showed sufficient linearities against the photon fluences in the energy regions of 8 to 20keV,13 to 20 keV and 13 to 20 keV, respectively. However, H3 and H70 did not provide sufficient linearities in the energy region of 8 to 12 keV. Moreover, we compared the result in this experiment with the value calculated from the absorbed dose of air using the mass absorption coefficient for the X-ray energy ranging from 10to 20keV.

収録刊行物

• Japanese Journal of Medical Physics

  Japanese Journal of Medical Physics 20 (4), 151-158, 2000

  Japan Society of Medical Physics

キーワード

• radiophotoluminescence glass dosimeter
• dose equivalent
• monochromatic X-ray
• personal radiation
• linearity

詳細情報

• CRID: 1390282679647893504
• NII論文ID: 130004624460
• NII論文ID: 10007134814
• NII書誌ID: AA11580542
• DOI: 10.11323/jjmp2000.20.4_151
• ISSN: 13455354
• PubMed: 12764240
• 本文言語コード: en
• データソース種別:
  • JaLC
  • PubMed
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可