ASSESSMENT OF CaSO4:Dy AND LiF:Mg,Ti THERMOLUMINESCENT DOSIMETERS PERFORMANCE IN THE DOSIMETRY OF CLINICAL ELECTRON BEAM / Avaliação do desempenho dos detectores termoluminescentes de CaSO4:Dy e LiF:Mg, Ti na dosimetria de feixes clínicos de elétrons

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The assessment of the performance of CaSO4:Dy thermoluminescent detectors produced by IPEN in the dosimetry of clinical electron beams aims to propose an alternative to the LiF:Mg,Ti commercial dosimeters (TLD-100) largely applied in radiation therapy. The two types of thermoluminescent dosimeters were characterised with the use of PMMA, RMI-457 type solid water and water phantoms in radiation fields of 4, 6, 9, 12 and 16 MeV electrons of nominal energies in which the dose-response curves were obtained and the surface and depth doses were determined. The thermoluminescent response dependency with the electron nominal energies and the applied phantom were studied. The CaSO4:Dy presented the same behaviour than the LiF:Mg,Ti in such a way that its application as an alternative to the TLD-100 pellets in the radiation therapy dosimetry of electron beams is viable and presents the significantly higher sensitivity to the electron radiation as its main advantage.

ASSUNTO(S)

radioterapia dosimetria de elétrons dosímetro termoluminescente dosímetro termoluminescente radioterapia dosimetria de elétrons

ACESSO AO ARTIGO

Documentos Relacionados