Model of the spatial-frequency-dependent detective quantum efficiency of phosphor screens.

@article{Nishikawa1990ModelOT,
  title={Model of the spatial-frequency-dependent detective quantum efficiency of phosphor screens.},
  author={Robert M. Nishikawa and Martin Joel Yaffe},
  journal={Medical physics},
  year={1990},
  volume={17 5},
  pages={
          894-904
        }
}
We have developed a theoretical model to predict the modulation transfer function (MTF), the shape of the x-ray quantum noise power spectrum (NPS), and the spatial-frequency-dependent detective quantum efficiency (DQE) of an x-ray phosphor screen. The transfer of energy through the screen is modelled as a series of cascaded stochastic processes assuming that the screen consists of many thin phosphor layers. In this way, the model is able to account for the possibility of secondary-quantum noise… CONTINUE READING

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