Detective quantum efficiency DQE(0) of CZT semiconductor detectors for digital radiography

In this paper, the detective quantum efficiency (DQE) of cadmium zinc telluride (CZT) detector samples for digital radiography has been measured. Specifically, this study is aimed at investigating the zero-frequency DQE(0) under different X-ray tube and detector parameters. The experimental results...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2004-12, Vol.53 (6), p.1479-1484
Main Authors: Giakos, G C, Suryanarayanan, S, Guntupalli, R, Odogba, J, Shah, N, Vedantham, S, Chowdhury, S, Mehta, K, Sumrain, S, Patnekar, N, Moholkar, A, Kumar, V, Endorf, R E
Format: Article
Language:English
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Summary:In this paper, the detective quantum efficiency (DQE) of cadmium zinc telluride (CZT) detector samples for digital radiography has been measured. Specifically, this study is aimed at investigating the zero-frequency DQE(0) under different X-ray tube and detector parameters. The experimental results of this study indicate that the DQE(0) of the CZT samples is strongly dependent upon the irradiation geometry. This is attributed to the incomplete charge collection process, which can be further improved by controlling the purity of the samples and the contact type.
ISSN:0018-9456
DOI:10.1109/TIM.2004.834590