A fundamental method to determine the signal-to-noise ratio (SNR) and detective quantum efficiency (DQE) for a photon counting pixel detector

Authors :: Michel, T.
Anton, G.
Böhnel, M.
Durst, J.
Firsching, M.
Korn, A.
Kreisler, B.
Loehr, A.
Nachtrab, F.
Niederlöhner, D.
Sukowski, F.
Takoukam Talla, P.
Source :: Nuclear Instruments & Methods in Physics Research Section A. Dec2006, p799-802. 4p.
Publication Year :: 2006
Abstract: 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. [Copyright &y& Elsevier]

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