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.

Date Published: 16 July 1981
PDF: 6 pages
Proc. SPIE 0273, Application of Optical Instrumentation in Medicine IX, (16 July 1981); doi: 10.1117/12.931784

Published in SPIE Proceedings Vol. 0273:
Application of Optical Instrumentation in Medicine IX
James A. Mulvaney; Joel E. Gray; Arthur G. Haus; William S. Properzio, Editor(s)