Comparative analysis of the transmission properties of tissue equivalent materials
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Radiation Physics and Chemistry
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Phantom objects have as main requirement to have the effective atomic number and linear attenuation coefficient
approximately equal to the human tissue to be simulated. The present work aims to characterize samples of
materials radiologically equivalent to water for dose studies in patients in the diagnostic energy range. Water
was chosen as reference material representing human tissue, which is composed mostly of it. A set of samples
was formulated and submitted to radiation transmission tests in four different values of tension applied to an Xray
tube. Mass densities of the samples were evaluated using the Arquimedes method. The samples were
identified as A, B, C and D. By transmission curves, it was possible to estimate the samples transmission factors
corresponding to the water transmission factor for different thicknesses. Moreover, the thicknesses of samples
equivalent to water thickness for different values of transmission factor were also evaluated. All the samples
densities were bigger than the density of water. For the same thickness of water and the samples, the radiation
transmission of the developed materials are in better agreement for thicknesses of 10mm and 30 mm. The lowest
percentage difference between the water transmission and the transmission of any of the samples obtained was
approximately 0.6% for the sample A in the thickness of 30mm under voltage of 60 kV. The correspondence
between the transmission factors and the thicknesses showed that the compounds studied in this work are
potential materials to develop phantoms that simulate the transmission properties of human tissue.
Como referenciar
NASCIMENTO, BRUNA C.; FRIMAIO, AUDREW; BARRIO, RAMON M.M.; SIRICO, ANA C.A.; COSTA, PAULO R. Comparative analysis of the transmission properties of tissue equivalent materials. Radiation Physics and Chemistry, v. 167, p. 1-7, 2020. DOI: 10.1016/j.radphyschem.2019.04.050. Disponível em: http://repositorio.ipen.br/handle/123456789/31425. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.