Evaluation of an efficient calibration protocol for use in radiochromic film dosimetry for photon beams


Akdeniz Y., YEĞİNGİL Z.

RADIATION PHYSICS AND CHEMISTRY, vol.156, pp.31-37, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 156
  • Publication Date: 2019
  • Doi Number: 10.1016/j.radphyschem.2018.10.002
  • Title of Journal : RADIATION PHYSICS AND CHEMISTRY
  • Page Numbers: pp.31-37

Abstract

This study aimed to investigate the adequacy of the response quantities and the calibration functions utilized in Gafchromic (TM) film dosimetry. EBT3 Gafchromic (TM) film pieces were irradiated to the deemed dose values between 0 and 3 Gy with the beam quality of 6 MV. Response quantities (net change in transmittance (net Delta T) and net change in optic density (net Delta OD)) were calculated. To determine whether the response quantities and different function forms were acceptable, they were tested using the dose uncertainty analysis techniques. An accurate and precise calibration protocol suggesting a new logarithmic functional form and its superior performance with use of net Delta T was demonstrated.