2024-03-28T10:12:55Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02001161
2023-11-16T02:04:36Z
499:508:509:1624513305190
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
open access
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
scatter radiation
radiation protection
cone-beam computed tomography
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.
Nagoya University Graduate School of Medicine, School of Medicine
2021-05
eng
departmental bulletin paper
VoR
https://doi.org/10.18999/nagjms.83.2.277
http://hdl.handle.net/2237/0002001161
https://nagoya.repo.nii.ac.jp/records/2001161
10.18999/nagjms.83.2.277
https://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/832.html
0027-7622
2186-3326
Nagoya Journal of Medical Science
83
2
277
286
https://nagoya.repo.nii.ac.jp/record/2001161/files/07_Yamaji.pdf
application/pdf
10.1 MB
2021-06-25