OSL and TL response characterization of LiF:MG,Ti microdosimeters to be applied to VMAT quality assurance

• Applicability of LiF:Mg,Ti microdosimeters in dosimetry to VMAT Rapid Arc.
• Evaluation of TL and OSL response of LiF:Mg,Ti microdosimeters to VMAT technique.
• Comparison of results using TL and OSL techniques and data given by Eclipse 11.0.

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.