Distribution of scatter radiation by C-arm cone-beam computed tomography in angiographic suite : measurement of doses and effectiveness of protection devices

• Yamaji Mayako

• Ishiguchi Tsuneo

• Koyama Shuji

• Ikeda Shuji

• Kitagawa Akira

• Hagihara Makiyo

• Itoh Yuji

• Nakamura Masaru

• Ota Toyohiro

• Suzuki Kojiro

抄録

Distribution of radiation by C-arm cone-beam computed tomography (CBCT) in the angiographic suite and effectiveness of protection devices were assessed. CBCT image of a human phantom was obtained by a rotation of 220 degrees during 8 seconds of exposure. One hundred and twelve dosimeters were placed at different positions around the beam entry site, and color maps of dose distributions were drawn for horizontal and vertical planes. The measurements showed the highest radiation dose over 600 μGy by a single CBCT image acquisition at a distance of 60 cm from the beam entry site and a height of 90 cm from the floor. The color maps demonstrated the dose distribution to be more intense at the bilateral directions of the phantom. With the use of a ceiling-mounted transparent lead-acryl screen and a table-suspended lead curtain, the doses were reduced by 45–92 % at a direction of 210 degrees and a distance of 120 cm.

収録刊行物

• Nagoya Journal of Medical Science

  Nagoya Journal of Medical Science 83 (2), 277-286, 2021-05

  Nagoya University Graduate School of Medicine, School of Medicine

キーワード

• scatter radiation
• radiation protection
• cone-beam computed tomography

詳細情報

• CRID: 1390572175571593600
• NII論文ID: 120007127070
• DOI: 10.18999/nagjms.83.2.277
• ISSN: 21863326
• ISSN: 00277622
• HANDLE: 2237/0002001161
• Web Site: https://nagoya.repo.nii.ac.jp/records/2001161
• Web Site: https://search.jamas.or.jp/link/ui/2022049595
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用可