Effective dose and image quality for different patient sizes during AP upper abdominal radiography: A phantom study

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dc.check.date06/10/2025en
dc.check.infoAccess to this article is restricted until 24 months after publication by request of the publisheren
dc.contributor.authorAlzyoud, Kholouden
dc.contributor.authorAl-Murshedi, Sadeqen
dc.contributor.authorEngland, Andrewen
dc.date.accessioned2023-12-01T11:11:36Z
dc.date.available2023-12-01T11:11:36Z
dc.date.issued2023-10-06en
dc.description.abstractIntroduction: Undertaking medical imaging examinations on obese patients can present practical challenges. Choosing optimal imaging protocols can be difficult, especially when promoting the ALARA principle. The aim of this study was to assess the effects of increasing body part thickness on image quality (IQ) and effective dose (ED) during upper abdominal radiography. A secondary aim was to determine the optimum exposure settings for larger sized patients. Methods: Underweight, standard, overweight and obese abdomen sizes were simulated using an anthropomorphic upper abdomen phantom, without and with additional fat layers (6, 10 and 16 cm). Phantoms were imaged using a variety of tube potentials (70–110 kVp), automatic exposure control (AEC) and a source-to-image distance of 120 cm. IQ was assessed visually using a relative visual grading analysis (VGA) method. Radiation dose was evaluated by calculating the ED using the Monte Carlo PCXMC 2.0 computer program. Results: IQ values showed a statistical reduction (p = 0.006) with increasing phantom size across all examined tube potentials. The highest IQ scores (3.3, 2.8, 2.5 and 2.2, respectively) were obtained at 70/75 kVp for all phantom thicknesses. As tube potential increased the IQ was also shown to decrease. ED showed a statistically significant increase (p < 0.001) with increasing phantom thicknesses. Conclusion: Higher EDs were evident when applying lower tube potentials. Using an AEC with high tube potentials (105/110 kVp) can lead to a considerable decrease in ED with acceptable IQ when undertaking upper abdomen radiography on patients with large body part thicknesses. Implication for practice: Applying higher values of tube potentials for patients who have a thicker abdomen can lead to decreased ED.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid111060en
dc.identifier.citationAlzyoud, K., Al-Murshedi, S. and England, A. (2023) 'Effective dose and image quality for different patient sizes during AP upper abdominal radiography: A phantom study', Applied Radiation and Isotopes, 202, 111060 (6pp). doi: 10.1016/j.apradiso.2023.111060en
dc.identifier.doi10.1016/j.apradiso.2023.111060en
dc.identifier.endpage6en
dc.identifier.issn0969-8043en
dc.identifier.journaltitleApplied Radiation and Isotopesen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/15286
dc.identifier.volume202en
dc.language.isoenen
dc.publisherElsevier Ltd.en
dc.rights© 2023, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectAbdominal radiographyen
dc.subjectObesityen
dc.subjectImage qualityen
dc.subjectRadiation doseen
dc.subjectEffective doseen
dc.subjectOptimizationen
dc.titleEffective dose and image quality for different patient sizes during AP upper abdominal radiography: A phantom studyen
dc.typeArticle (peer-reviewed)en
oaire.citation.volume202en
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