On temporal evolution of the response of EBT4 radiochromic films

Since the response of the films continues to develop with time, to adhere to good practice of film dosimetry, the calibration and test films must be read at the same time interval post-irradiation, otherwise significant errors in dose measurement can occur. Since the temporal dynamics of EBT4 and EBT3 films were found to be similar, both models can be treated similarly in terms of the optimum post-irradiation wait-time prior to film readout.