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Dosimetric characterization of 3D printed phantoms at different infill percentages for diagnostic X-ray energy range

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Autor(es):
Villani, D. [1] ; Rodrigues, Jr., O. [1] ; Campos, L. L. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Pesquisas Energet & Nucl, CNEN, Ave Prof Lineu Prestes 2242, Cidade Univ, BR-00550800 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Radiation Physics and Chemistry; v. 172, JUL 2020.
Citações Web of Science: 0
Resumo

The aim of this paper is to characterize 3D printed phantoms and printing set-ups with different infill percentages for imaging energy X-ray beams attenuation. 3D printing performance was studied using the fused filament fabrication (FFF) technique with PLA (Polylactic Acid) and ABS (Acrylonitrile Butadiene Styrene) filaments. Phantom plates were printed and, using the Pantak Seifert X-ray system with different beam qualifies in the diagnostic range, the attenuation coefficients were obtained experimentally with the transmission method and results compared with PMMA used as reference and theoretical data. Different percentages of infill of printed phantoms were also evaluated and transmission characterized. The attenuation coefficients were determined for the different beam qualifies and results show that the variation in the values of attenuation coefficients decreases as the infill quality increases. Attenuation characteristics evaluated indicates the suitable equivalence of PLA to PMMA for 3D printing water/tissue equivalent most complex geometry phantoms. The different printing modes characterized together with their attenuation coefficients for the X-ray beams will be studied and used in the development of new 3D printed phantoms in our institute. (AU)

Processo FAPESP: 17/50332-0 - Capacitação científica, tecnológica e em infraestrutura em radiofármacos, radiações e empreendedorismo a serviço da saúde (PDIp)
Beneficiário:Marcelo Linardi
Linha de fomento: Auxílio à Pesquisa - Programa Modernização de Institutos Estaduais de Pesquisa