Plastic scintillators detectors (PSDs) have been studied as dosimeters, since they provide a cost-effective alternative to conventional ionization chambers. On the other hand, several articles have reported undesired response dependencies on beam energy and temperature, which enhances the necessity to determine appropriate correction factors. In this study, we exploit the energy and temperature dependencies of BC-404 and BCF-60 scintillators from Saint-Gobain. Measurement and analysis of energy dependency were performed on a Siemens Mammomat tomograph for two different peak kilovoltages: 26 kV and 35 kV. Both PSD displayed good linearity for each energy considered and almost no energy dependence. Measurements were made at 50 kVp to study the temperature dependence of the scintillators response. In the 0 to 40 ºC range a temperature coefficient less than 0.6% ºC-1 was measured.
