Stray radiation dose reduction using a backscatter shield and a rectangular collimator for a handheld intraoral X-ray unit
Abstract The objective of this study was to study the dose reduction effect on occupational exposure of operators and public exposure other than operators when a backscatter shield and a rectangular collimator are used in conjunction with a handheld intraoral X-ray unit. The occupational exposure wa...
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| Published in: | Radiation protection dosimetry Vol. 199; no. 19; pp. 2349 - 2355 |
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| Main Authors: | , , , , , , , , , |
| Format: | Journal Article |
| Language: | English |
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Oxford University Press
16-11-2023
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| Abstract | Abstract
The objective of this study was to study the dose reduction effect on occupational exposure of operators and public exposure other than operators when a backscatter shield and a rectangular collimator are used in conjunction with a handheld intraoral X-ray unit. The occupational exposure was reduced to 40% when the backscatter shield was attached to the cone-tip, to 13% when the rectangular collimator was attached and to 7.7% when the backscatter shield and rectangular collimator were used together. On the other hand, the public exposure was reduced to 20% when the rectangular collimator was attached, but the backscatter shield was not effective in reducing the public exposure. Attaching a backscatter shield is effective in reducing the occupational exposure, and a rectangular aperture is effective in reducing the occupational exposure, as well as the public exposure. |
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| AbstractList | The objective of this study was to study the dose reduction effect on occupational exposure of operators and public exposure other than operators when a backscatter shield and a rectangular collimator are used in conjunction with a handheld intraoral X-ray unit. The occupational exposure was reduced to 40% when the backscatter shield was attached to the cone-tip, to 13% when the rectangular collimator was attached and to 7.7% when the backscatter shield and rectangular collimator were used together. On the other hand, the public exposure was reduced to 20% when the rectangular collimator was attached, but the backscatter shield was not effective in reducing the public exposure. Attaching a backscatter shield is effective in reducing the occupational exposure, and a rectangular aperture is effective in reducing the occupational exposure, as well as the public exposure. Abstract The objective of this study was to study the dose reduction effect on occupational exposure of operators and public exposure other than operators when a backscatter shield and a rectangular collimator are used in conjunction with a handheld intraoral X-ray unit. The occupational exposure was reduced to 40% when the backscatter shield was attached to the cone-tip, to 13% when the rectangular collimator was attached and to 7.7% when the backscatter shield and rectangular collimator were used together. On the other hand, the public exposure was reduced to 20% when the rectangular collimator was attached, but the backscatter shield was not effective in reducing the public exposure. Attaching a backscatter shield is effective in reducing the occupational exposure, and a rectangular aperture is effective in reducing the occupational exposure, as well as the public exposure. |
| Author | Takahashi, Nobutoshi Ishii, Takeru Kito, Shinji Harata, Yasuo Saka, Hideki Otaka, Yusei Shiba, Noriyoshi Izawa, Maki Iwawaki, Atsushi Ochiai, Akihiro |
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| Cites_doi | 10.4103/jiaomr.jiaomr_36_18 10.1259/dmfr.20140343 10.1109/R10-HTC.2013.6669014 10.1259/dmfr/33303181 10.12950/rsm.171016 10.1111/idj.12411 10.1016/j.tripleo.2009.03.011 |
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| Copyright | The Author(s) 2023. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com 2023 |
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| References | Shetty (2023111615363833100_ref9) 2019; 69 Berkhout (2023111615363833100_ref3) 2015; 44 Otaka (2023111615363833100_ref6) 2018; 17 Goren (2023111615363833100_ref4) 2008; 37 Aoki (2023111615363833100_ref1) 2013 Zhang (2023111615363833100_ref8) 2009; 108 Wale (2023111615363833100_ref2) 2018; 30 Senior (2023111615363833100_ref5) 2020; 86 Aribex, Inc. (2023111615363833100_ref7) |
| References_xml | – volume: 30 start-page: 153 year: 2018 ident: 2023111615363833100_ref2 article-title: Hand-held X-ray device: a review publication-title: J. Indian Acad. Oral Med. Radiol. doi: 10.4103/jiaomr.jiaomr_36_18 contributor: fullname: Wale – volume: 44 start-page: 20140343 year: 2015 ident: 2023111615363833100_ref3 article-title: Justification and good practice in using handheld portable dental X-ray equipment: a position paper prepared by the European Academy of DentoMaxilloFacial Radiology (EADMFR) publication-title: Dentomaxillofacial Radiol. doi: 10.1259/dmfr.20140343 contributor: fullname: Berkhout – volume-title: NOMAD Pro 2 Manual – Handheld X-ray System ident: 2023111615363833100_ref7 contributor: fullname: Aribex, Inc. – start-page: 57 volume-title: 2013 IEEE Region 10 Humanitarian Technology Conference year: 2013 ident: 2023111615363833100_ref1 doi: 10.1109/R10-HTC.2013.6669014 contributor: fullname: Aoki – volume: 37 start-page: 109 issue: 2 year: 2008 ident: 2023111615363833100_ref4 article-title: Radiation exposure with the NOMAD portable X-ray system publication-title: Dentomaxillofac Radiol. doi: 10.1259/dmfr/33303181 contributor: fullname: Goren – volume: 17 start-page: 1 year: 2018 ident: 2023111615363833100_ref6 article-title: Efficacy of shields against the backscatter radiation of portable X-ray units publication-title: Radiat. Saf. Manage. doi: 10.12950/rsm.171016 contributor: fullname: Otaka – volume: 86 start-page: k16 year: 2020 ident: 2023111615363833100_ref5 article-title: Intraoral imaging in dental private practice - a rectangular collimator study publication-title: J. Can. Dent. Assoc. contributor: fullname: Senior – volume: 69 start-page: 84 year: 2019 ident: 2023111615363833100_ref9 article-title: Evidence on radiation dose reduction using rectangular collimation: a systematic review publication-title: Int. Dent. J. doi: 10.1111/idj.12411 contributor: fullname: Shetty – volume: 108 start-page: e22 issue: 1 year: 2009 ident: 2023111615363833100_ref8 article-title: Comparison of the efficacy and technical accuracy of different rectangular collimators for intraoral radiography publication-title: Oral. Surg. Oral. Med. Oral. Pathol. Oral. Radiol. Endod. doi: 10.1016/j.tripleo.2009.03.011 contributor: fullname: Zhang |
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The objective of this study was to study the dose reduction effect on occupational exposure of operators and public exposure other than operators when... The objective of this study was to study the dose reduction effect on occupational exposure of operators and public exposure other than operators when a... |
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| Title | Stray radiation dose reduction using a backscatter shield and a rectangular collimator for a handheld intraoral X-ray unit |
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