Comparison of doses calculated by the Monte Carlo method and measured by LiF TLD in the buildup region for a 60Co photon beam

Appl Radiat Isot. 2008 Dec;66(12):1925-9. doi: 10.1016/j.apradiso.2008.04.021. Epub 2008 May 10.

Abstract

This work studied the percent depth doses of (60)Co photon beams in the buildup region of a plastic phantom by LiF TLD measurements and by Monte Carlo calculations. An agreement within +/-1.5% was found between PDDs measured by TLD and calculated by the Monte Carlo method with the TLD in a plastic phantom. The dose in the plastic phantom was scored in voxels, with thickness scaled by physical and electron density. PDDs calculated by electron density scaling showed a better match with PDD(TLD)(MC); the difference is within +/-1.5% in the buildup region for square and rectangular field sizes.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Cobalt Radioisotopes / analysis*
  • Computer Simulation
  • Models, Statistical*
  • Monte Carlo Method
  • Photons
  • Radiation Dosage
  • Radiometry / methods*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Thermoluminescent Dosimetry / instrumentation
  • Thermoluminescent Dosimetry / methods*

Substances

  • Cobalt Radioisotopes