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

Appl Radiat Isot. 2015 Nov:105:299-302. doi: 10.1016/j.apradiso.2015.08.038.

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.

Keywords: Lithium fluoride; Optically stimulated luminescence; Photons beam; Thermoluminescence; VMAT RapidArc.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Fluorides
  • Humans
  • Lithium Compounds
  • Luminescence
  • Magnesium
  • Phantoms, Imaging
  • Polymethyl Methacrylate
  • Quality Control
  • Radiometry / instrumentation
  • Radiometry / methods*
  • Radiometry / statistics & numerical data
  • Radiotherapy Dosage
  • Radiotherapy Planning, Computer-Assisted
  • Radiotherapy, Intensity-Modulated / standards*
  • Radiotherapy, Intensity-Modulated / statistics & numerical data
  • Thermoluminescent Dosimetry / instrumentation
  • Thermoluminescent Dosimetry / methods
  • Thermoluminescent Dosimetry / statistics & numerical data
  • Titanium

Substances

  • Lithium Compounds
  • lithium fluoride
  • Polymethyl Methacrylate
  • Titanium
  • Magnesium
  • Fluorides