Methodology for in vivo dosimetry using TLD-100 for radiotherapic treatment
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2017
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Medical Physics
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Cancer is a public health problem that affects approximately 27
million people worldwide. The most common type in Brazil among men is
prostate cancer with 61 thousand cases. There are two forms of radiotherapy
treatments that can be used: teletherapy and brachytherapy. Before starting
the teletherapy treatment, a planning is done that makes the acquisition of the
anatomical information of the patient to then classify the areas of interest. Dosimetry is performed as a quality control to ensure that the calculated dose
is equal to that received by the patient. In vivo dosimetry acts as an independent
measurement and this work aims at comparing the dosimetry performed
using thermoluminescent dosimeters (LiF: Mg, Ti - TLD - 100) with dose
values calculated in the planning system (TPS). Methods: All dosimeters
were prepared to be used in an anthropomorphic phantom. A selection of
dosimeters, 50 micro TLD’s, selected after heat treatment, were then irradiated
and a reading was made. A case planned by TPS was selected and compared
the dosimetry performed in an anthropomorphic phantom for the same
case. Results: All values obtained were within the deviation ( 5%) allowed
by the protocol. The results of this work will help to implement a new quality
program in the Radiotherapy Service at Hospital das Cl ınicas de S~ao Paulo.
Conclusion: The accurate dosimeter selection provided a feasible and reliable
evaluation that enabled the comparison.
Como referenciar
RODRIGUES, B.T.; SOUZA, P.D. de; SOUZA, C.D. de; ROSTELATO, M.C.M.; ZEITUNI, C.; NOGUEIRA, B.R.; MARQUES, J. de O.; SOUZA, A.S. de. Methodology for in vivo dosimetry using TLD-100 for radiotherapic treatment. Medical Physics, v. 44, n. 6, p. 2898-2899, 2017. DOI: 10.1002/mp.12304. Disponível em: http://repositorio.ipen.br/handle/123456789/31134. Acesso em: 24 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.