Computational evaluation of the bucky components influence on the estimation of normalized glandular dose in digital mammography

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dc.contributor.authorGODELI, J.
dc.contributor.authorCUNHA, D.M.
dc.contributor.authorPOTIENS, M.P.A.
dc.contributor.authorPOLETTI, M.E.
dc.coverageInternacional
dc.date.accessioned2024-08-09T18:49:37Z
dc.date.available2024-08-09T18:49:37Z
dc.date.issued2024
dc.description.abstractThe mean glandular dose (MGD) is the most suitable dosimetric quantity used in mammography to describe the absorbed dose by the breast, although it cannot be directly acquired. Studies have provided conversion factors widely implemented in international dosimetry protocols to estimate MGD, such as normalized glandular dose (DgN). Over time, the DgN estimation was refined by considering geometric models that approach a real clinical environment, such as new anode/filter combinations, compression plate and breast models. However, there is no detailed study of how the bucky (support plate, antiscatter grid and detector) can affect the DgN estimation. A modified PENELOPE Monte Carlo code was used for DgN estimation. The irradiation geometric model was built as a complete digital mammography system, considering a homogeneous breast and different typical bucky models in commercial mammography units. Simulations were carried out for mono and polyenergetic beams considering different imaging geometries. Studies with monoenergetic beams showed that the bucky presence affected DgN mainly for higher beam energies and thinner breasts. The breast support plate was the bucky component that most affected the DgN, followed by the antis-scatter grid and finally, the image detector. Studies with polyenergetic conventional (low-energy) spectra showed that the bucky exerted a minimal influence on DgN values (less than 1.0%). For high-energy spectra, mainly employed in modalities such as contrast-enhanced digital mammography, the DgN values were more affected by the bucky, increasing by 4.8% the DgN values for a 2 cm thick breast and a W/Cu 50 kV spectrum. Bucky inclusion in computer simulations is highly recommended mainly for thinner breasts and high-energy spectra. To simplify the simulations, we confirm that a homogeneous carbon fibre block support, with thickness between 3.9 and 4.1 mm, can be used as a good substitute for a complete bucky model.
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIDCNPq: 312643/2018-7; 311710/2022-0
dc.description.sponsorshipIDFAPESP: 18/05982-0
dc.format.extent1-8
dc.identifier.citationGODELI, J.; CUNHA, D.M.; POTIENS, M.P.A.; POLETTI, M.E. Computational evaluation of the bucky components influence on the estimation of normalized glandular dose in digital mammography. <b>Radiation Physics and Chemistry</b>, v. 222, p. 1-8, 2024. DOI: <a href="https://dx.doi.org/10.1016/j.radphyschem.2024.111788">10.1016/j.radphyschem.2024.111788</a>. Disponível em: https://repositorio.ipen.br/handle/123456789/48175.
dc.identifier.doi10.1016/j.radphyschem.2024.111788
dc.identifier.issn0969-806X
dc.identifier.orcidhttps://orcid.org/0000-0002-4049-6720
dc.identifier.percentilfi69.2
dc.identifier.percentilfiCiteScore81.00
dc.identifier.urihttps://repositorio.ipen.br/handle/123456789/48175
dc.identifier.vol222
dc.relation.ispartofRadiation Physics and Chemistry
dc.rightsopenAccess
dc.sourceInternational Conference on Dosimetry and its Applications, 4th, October 16-20, 2023, Valencia, Spain
dc.subjectbiomedical radiography
dc.subjectdiagnosis
dc.subjectmammary glands
dc.subjectsimulation
dc.subjectradiation doses
dc.subjectdosimetry
dc.subjectcarbon fibers
dc.titleComputational evaluation of the bucky components influence on the estimation of normalized glandular dose in digital mammography
dc.typeArtigo de periódico
dspace.entity.typePublication
ipen.autorMARIA DA PENHA ALBUQUERQUE POTIENS
ipen.codigoautor346
ipen.contributor.ipenauthorMARIA DA PENHA ALBUQUERQUE POTIENS
ipen.identifier.fi2.8
ipen.identifier.fiCiteScore5.6
ipen.identifier.ipendoc30500
ipen.identifier.iwosWoS
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ipen.range.percentilfi50.00 - 74.99
ipen.type.genreArtigo
relation.isAuthorOfPublication30f213ae-321d-4d51-8763-0a2585255fb9
relation.isAuthorOfPublication.latestForDiscovery30f213ae-321d-4d51-8763-0a2585255fb9
sigepi.autor.atividadeMARIA DA PENHA ALBUQUERQUE POTIENS:346:330:N
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