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Optimisation of exposure parameters using a phantom for thoracic spine radiographs in antero-posterior and lateral views

2023-08Journal article Open access
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dc.contributor.authorReis, Cláudia
dc.contributor.authorCaso, M.
dc.contributor.authorDolenc, L.
dc.contributor.authorHowick, K.
dc.contributor.authorLemmen, R.
dc.contributor.authorMeira, A.
dc.contributor.authorShatku, F.
dc.contributor.authorAymon, E.
dc.contributor.authorGhotra, S. S.
dc.date.accessioned2023-07-06T15:16:58Z
dc.date.available2023-07-06T15:16:58Z
dc.date.issued2023-08
dc.description.abstractIntroduction: To investigate the exposure parameters for thoracic spine/(TS) radiography that allows the image acquisition at the lowest dose possible, while maintaining an adequate image quality/(IQ) to identify all relevant anatomical criteria. Methods: An experimental phantom study was conducted, and 48 different radiographs of TS (24 AP/24 lateral) were acquired. The Automatic Exposure Control/(AEC) with the central sensor was used to select the beam intensity, while Source-to-Detector-Distance/(SDD) (AP:115/125 cm; Lateral:115/150 cm), tube potential (AP:70/81/90 kVp; Lateral: 81/90/102 kVp), use of grid/no grid and focal spot (fine/broad) were manipulated. IQ was assessed by observers with ViewDEX. Effective Dose (ED) was estimated using PCXMC2.0 software. Descriptive statistics paired with the intraclass correlation coefficient (ICC) were applied to analyze data. Results: The ED increased with a greater SDD for lateral view, presenting a significant difference (p = 0.038), however, IQ was not affected. For both AP and lateral, the use of a grid had a significant effect on ED (p < 0.001). Despite the images acquired without a grid had lower IQ scores, the observers considered the IQ adequate for clinical use. A 20% reduction in ED (0.042mSv–0.033 mSv) was observed when increasing the beam energy from 70 to 90 kVp for the AP grid in. The observers ICC ranged from moderate to good (0.5–0.75) in lateral and good to excellent (0.75–0.9) for AP views. Conclusions: The optimized parameters in this context were 115 cm SDD and 90 kVp with a grid for the best IQ and lowest ED. Further studies in clinical settings are necessary to enlarge the context and cover different body habitus and equipment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationReis CS, Caso M, Dolenc L, Howick K, Lemmen R, Meira A, et al. Optimisation of exposure parameters using a phantom for thoracic spine radiographs in antero-posterior and lateral views. Radiography. 2023;29(5):870-7.pt_PT
dc.identifier.doi10.1016/j.radi.2023.06.009pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/16292
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1078817423001359pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectPlain radiographypt_PT
dc.subjectSource-to-detector distancept_PT
dc.subjectBeam energypt_PT
dc.subjectBeam intensitypt_PT
dc.subjectRadiographerspt_PT
dc.titleOptimisation of exposure parameters using a phantom for thoracic spine radiographs in antero-posterior and lateral viewspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage877pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage870pt_PT
oaire.citation.titleRadiographypt_PT
oaire.citation.volume29pt_PT
person.familyNameSá dos Reis
person.givenNameCláudia
person.identifier.ciencia-idE413-AD01-483A
person.identifier.orcid0000-0003-2376-4460
person.identifier.scopus-author-id57194228991
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationda39fdee-9cda-46f9-b6e5-102174ce23b4
relation.isAuthorOfPublication.latestForDiscoveryda39fdee-9cda-46f9-b6e5-102174ce23b4

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