Author/Authors :
Michel، نويسنده , , T. and Anton، نويسنده , , G. and Bِhnel، نويسنده , , M. and Durst، نويسنده , , J. and Firsching، نويسنده , , M. and Korn، نويسنده , , A. and Kreisler، نويسنده , , B. and Loehr، نويسنده , , A. and Nachtrab، نويسنده , , F. and Niederlِhner، نويسنده , , D. and Sukowski، نويسنده , , F. and Takoukam Talla، نويسنده , , P.، نويسنده ,
Abstract :
We outline in this paper that the noise of a photon counting pixel detector depends on the detection efficiency and the average multiplicity of counts per interacting photon. We give a simple expression for the signal-to-noise ratio (SNR) and zero-frequency detective quantum efficiency (DQE). We describe a method to determine the DQE from measured data and to optimize the DQE as a function of energy threshold.
Keywords :
Medipix , Pixel detector , photon counting detector , x-ray imaging , Signal-to-noise ratio (SNR) , Detective quantum efficiency (DQE) , Multiplicity of counts
