X-ray spectrometry applied for determination of linear attenuation coefficient of tissue-equivalent materials

Autor(es)

Frimaio, Audrew ^[1] ; Nascimento, Bruna C. ^[2] ; Barrio, Ramon M. M. ^[2] ; Campos, Leticia L. ^[1] ; Costa, Paulo R. ^[2]

Afiliação do(s) autor(es)

^[1] IPEN, Av Prof Lineu Prestes 2242, BR-05508000 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Fis, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Radiation Physics and Chemistry; v. 160, p. 89-95, JUL 2019.
• Citações Web of Science: 3

Resumo

Resin-based materials equivalent to water were developed and four different samples were obtained. The linear attenuation coefficients of all samples was evaluated using X-ray spectrometry with primary and transmitted beams using voltages at the ranging from 60 to 120 kV. The experimental measured values were compared with theoretical reference values to water and with that obtained using the Least Square Method algorithm methodology (method applied to diagnostic radiology and radiotherapy). Our results show that differences between the measured values and the target mu(E) was lower than 7% +/- 0.3 in the energy range from 20 to 80 keV. These results enable to consider that the material developed and produced is a good option to be used as a water equivalent material and the experimental method adequate to its quantitative evaluation. (AU)

• Processo FAPESP: 17/23034-9 - Validação de materiais radiologicamente equivalentes ao tecido humano
• Beneficiário: Bruna Costa Nascimento
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 10/12237-7 - Estudo experimental das relações entre Kerma no ar e equivalente de dose ambiente para o cálculo de barreiras primárias em salas radiológicas
• Beneficiário: Paulo Roberto Costa
• Modalidade de apoio: Auxílio à Pesquisa - Regular