Measurement Of The Detective Quantum Efficiency Of X-Ray Image Intensifiers

A. A.G. Beekmans; J.A. J. van Leunen

doi:10.1117/12.975381

12 June 1986 Measurement Of The Detective Quantum Efficiency Of X-Ray Image Intensifiers

A. A.G. Beekmans, J.A. J. van Leunen

Proceedings Volume 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems; (1986) https://doi.org/10.1117/12.975381
Event: Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems (PACS IV) for Medical Applications, 1986, Newport Beach, CA, United States

Abstract

Together with the Modulation Transfer Function(MIT)the Detective Quantum Effiency (DQE) forms the physical base for the description of the information transfer of image intensifiers. The measurement of the DQE relies on the determination of the signal to noise ratios in the input and output information flows. The most difficult part of the measurement is the measurement of the temporal behaviour of the combination of measuring equipment and testspecimen. The temporal characteristics of this combination determine the sampling time that is used in computing the signal to noise ratios from DC and RMS data. If the range of X-ray image intensifiers under consideration is restricted to the family of CsI inputscreen and P20 phosphor outputscreen type image intensifiers, then it is possible to design a rather simple measuring procedure, that can be used as a standard for comparing DQE measuring results.

Citation Download Citation

A. A.G. Beekmans and J.A. J. van Leunen "Measurement Of The Detective Quantum Efficiency Of X-Ray Image Intensifiers", Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); https://doi.org/10.1117/12.975381

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