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

被引：46

作者：

Michel, T. ^{[1
]}

Anton, G. ^{[1
]}

Boehnel, M. ^{[1
]}

Durst, J. ^{[1
]}

Firsching, M. ^{[1
]}

Korn, A. ^{[1
]}

Kreisler, B. ^{[1
]}

Loehr, A. ^{[1
]}

Nachtrab, F. ^{[1
]}

Niederloehner, D. ^{[1
]}

Sukowski, F. ^{[1
]}

Talla, P. Takoukam ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 568卷 / 02期

关键词：

X-ray imaging; photon counting detector; signal-to-noise ratio (SNR); detective quantum efficiency (DQE); multiplicity of counts; medipix; pixel detector;

D O I：

10.1016/j.nima.2006.08.115

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：799 / 802

页数：4

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