Attenuation coefficient determination of printed ABS and PLA samples in diagnostic radiology standard beams

8th Brazilian Congress on Metrology

Veneziani, G.R.^1 ; Corrêa, E.L.^1 ; Potiens, M.P.A.^1 ; Campos, L.L.^1

Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN - SP, Avenida Lineu Prestes, 2242, São Paulo, Brazil^1

关键词: Attenuation coefficient;    Body sections;    Code of practice;    Diagnostic radiology;    Half-value layer;    Material cost;    Radiation attenuation;    X ray beam;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012088/pdf
DOI  :  10.1088/1742-6596/733/1/012088

来源: IOP

【 摘 要 】

IAEA code of practice TRS-457 states that standard phantoms should offer the same primary attenuation and scatter production as relevant body section of a representative patient. Material cost, availability and dimensional stability must also be considered. The goal of this study is to determine the attenuation coefficient of printed ABS and PLA samples in standard X-ray beams, verifying if phantoms printed with these materials could be an easier-handle substitute for PMMA, enabling the creation of different designs in an easier and cheaper way. Results show that PMMA presents higher attenuation coefficient, followed by PLA and ABS, which means that thinner PMMA layer creates higher radiation attenuation.