Intraoperative 2D C-arm and 3D O-arm in children: a comparative phantom study.

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License: CC BY-NC 4.0
Serval ID
serval:BIB_379F63860510
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Intraoperative 2D C-arm and 3D O-arm in children: a comparative phantom study.
Journal
Journal of children's orthopaedics
Author(s)
Prod'homme M., Sans-Merce M., Pitteloud N., Damet J., Lascombes P.
ISSN
1863-2521 (Print)
ISSN-L
1863-2521
Publication state
Published
Issued date
01/10/2018
Peer-reviewed
Oui
Volume
12
Number
5
Pages
550-557
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Exposure to ionizing radiation is a concern for children during intraoperative imaging. We aimed to assess the radiation exposure to the paediatric patient with 2D and 3D imaging.
To evaluate the radiation exposure, patient absorbed doses to the organs were measured in an anthropomorphic phantom representing a five-year-old child, using thermoluminescent dosimeters. For comparative purposes, organ doses were measured using a C-arm for one minute of fluoroscopy and one acquisition with an O-arm. The cone-beam was centred on the pelvis. Direct and scattered irradiations were measured and compared (Student's <i>t</i> -test). Skin entrance dose rates were also evaluated.
All radiation doses were expressed in µGy. Direct radiation doses of pelvic organs were between 631.22 and 1691.87 for the O-arm and between 214.08 and 737.51 for the C-arm, and were not significant (p = 0.07). Close scattered radiation on abdominal organs were between 25.11 and 114.85 for the O-arm and between 8.03 and 55.34 for the C-arm, and were not significant (p = 0.07). Far scattered radiation doses on thorax, neck and head varied from 0.86 to 6.42 for the O-arm and from 0.04 to 3.08 for the C-arm, and were significant (p = 0.02). The dose rate at the skin entrance was 328.58 µGy.s <sup>-1</sup> for the O-arm and 1.90 with the C-arm.
During imaging of the pelvis, absorbed doses for a 3D O-arm acquisition were higher than with one minute fluoroscopy with the C-arm. Further clinical studies comparing effective doses are needed to assess ionizing risks of the intraoperative imaging systems in children.
Keywords
CBCT, O-arm, ionizing radiations, paediatric orthopaedics, patient exposure
Pubmed
Web of science
Open Access
Yes
Create date
17/10/2018 10:57
Last modification date
20/08/2019 13:26
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