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OSL and TL response characterization of LiF:MG,Ti microdosimeters to be applied to VMAT quality assurance
A Bravim1, R K Sakuraba2, J C Cruz3
1Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Avenida Professor Lineu Prestes, 2242, Cidade Universitária, São Paulo, SP, Brazil.
Abstract:
This paper aims to evaluate the feasibility of applying LiF:Mg,Ti microdosimeters as a new method of dosimetry to volumetric-modulated arc therapy (VMAT) RapidArc. The response of microdosimeters presented a maximum variation of ±3.18% and ±0.510% using optically stimulated luminescence (OSL) and thermoluminescence (TL) techniques, respectively. Although studies were conducted on LiF:Mg,Ti microdosimeters previously, the microdosimeters in this study showed precision and high potential of application in VMAT dosimetry and in the verification of treatment planning using the VMAT technique.
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