Low cost electron irradiator using 90Sr+90Y sources
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2020
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Radiation Physics and Chemistry
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In beta therapy, β particles from 90Sr+90Y are used for the prevention and treatment of ophthalmological and
dermatological diseases. For such purposes, the radiation dose is deposited by planar and concave applicators
positioned on the region to be treated. Although this therapy is effective on the diseases, several complications
have been reported, making these types of radioactive applicators obsolete in current clinical practice. This
paper proposes a methodology to prepare and evaluate the safety of a research irradiator that re-purposes and
adapts dermatologic and ophthalmic 90Sr+90Y applicators. The irradiator was constructed using low cost materials
and three applicator sources. The sources are positioned at the center and the upper end of acrylic
rectangular prisms. Radiochromic film was used to obtain the dose distribution on the sample holder surface.
Pellets of aluminum oxide doped with carbon (Al2O3:C) were used to evaluate the reproducibility of the irradiator.
The MCNPX Monte Carlo code was used for the evaluation of safety conditions. The irradiator exhibits
good reproducibility of irradiation of dosimeters in pellet form and is safe to handle.
Como referenciar
SILVA, ROGERIO M.V.; BELINATO, WALMIR; SANTOS, WILLIAM S.; SOUZA, LUIZA F.; PERINI, ANA P.; NEVES, LUCIO P.; SOUZA, DIVANIZIA N. Low cost electron irradiator using 90Sr+90Y sources. Radiation Physics and Chemistry, v. 167, p. 1-8, 2020. DOI: 10.1016/j.radphyschem.2019.03.039. Disponível em: http://repositorio.ipen.br/handle/123456789/31438. Acesso em: 19 Apr 2024.
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.