Energy dependence of radiochromic dosimetry films for use in radiotherapy verification

Abstract

Gafchromic EBT film does not show any energy dependence in the conditions typical for IMRT but the doses measured for pre-treatment plan verifications should exceed 1 Gy.

Design and implementation of a film dosimetry audit tool for comparison of planned and delivered dose distributions in high dose rate (HDR) brachytherapy

“…For both Ir-192 and Co-60 HDR sources, the film dose as a function of radial distance from the source agrees well with Monte Carlo reference data in higher dose regions, but deteriorates with under-response and increased noise if the film dose is less than around 100 cGy. This is in line with previous studies for EBT (Chelminski et al 2010) and EBT3 (Palmer et al 2013b). For measurements of dose distributions in clinically relevant situations, such as CTV volume or nearest high dose region in organs at risk, doses will exceed this level.…”

Wax boluses and accuracy of EBT and RTQA radiochromic film detectors in radiotherapy with the JINR Phasotron proton beam

“…15 Moreover, RCFs are unaffected by standard room lights, although they are sensitive to UV radiation in sunlight and glow-tube lighting. 14,15,22…”

Comparison of dosimetric characteristics of physical and enhanced dynamic wedges

“…The clinical advantages of Varian Enhanced Dynamic Wedges (EDW) and Siemens Virtual wedges (VW) have been discussed in many articles. [5][6][7][8][9][10][11][12][13][14] The effect of enhanced dynamic wedge factor (EDWF) for symmetric and asymmetric photon fields have been discussed in the literature. [15][16][17] The performance evaluation of diode array has been evaluated by comparing its EDW profiles at various depths with point dose measurement using an ionization chamber.…”