Screen Speed Designations: A Need For Standardization And Some Suggestions

Gilbert Zweig

doi:10.1117/12.931784

16 July 1981 Screen Speed Designations: A Need For Standardization And Some Suggestions

Gilbert Zweig

Proceedings Volume 0273, Application of Optical Instrumentation in Medicine IX; (1981) https://doi.org/10.1117/12.931784
Event: Application of Optical Instrumentation in Medicine, 1981, San Francisco, United States

Abstract

Anyone who has tried to interchange different intensifying screens for a given procedure while maintaining consistent image density, appreciates the problem resulting from the lack of standardized screen speed designations. The problem has resulted, in part, from the variety of product names which we manufactur-ers have coined for our screens to establish screen brand identity and differentiation. These names, in most cases, give no indication of relative screen speed. Presently, there are no standard measuring procedures which the radiographer can use for routinely determining screen speed. The greater non-linear KVp response of the rare-earth phosphors, in fact, makes the use of single number designations deceptive. Different methods for designating screen speeds will be examined and a technique for transposing between different screens will be discussed.

Citation Download Citation

Gilbert Zweig "Screen Speed Designations: A Need For Standardization And Some Suggestions", Proc. SPIE 0273, Application of Optical Instrumentation in Medicine IX, (16 July 1981); https://doi.org/10.1117/12.931784

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