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Proceedings Paper

Measurement Of The Detective Quantum Efficiency Of X-Ray Image Intensifiers
Author(s): A. A.G. Beekmans; J.A. J. van Leunen
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Paper 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.

Paper Details

Date Published: 12 June 1986
PDF: 8 pages
Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); doi: 10.1117/12.975381
Show Author Affiliations
A. A.G. Beekmans, Medical Systems Division (The Netherlands)
J.A. J. van Leunen, Medical Systems Division (The Netherlands)


Published in SPIE Proceedings Vol. 0626:
Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems
Samuel J. Dwyer; Roger H. Schneider, Editor(s)

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