Plain radiography with a rare-earth screen: Comparison with calcium tungstate screen

D. Picus, W. H. McAlister, E. Smith, S. Rodewald, R. G. Jost, R. G. Evens

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Plain radiographic examinations were performed on 388 patients (adult and pediatric) using either a calcium tungstate or rare-earth screen. Radiographs were compared for overall image quality, mottle, contrast, density, and detail. The rare-earth screen produced radiographs with significantly more mottle than did the standard screen. However, this was almost never of diagnostic importance. A small but significant decrease in overall image quality also was found with the rare-earth screen. This was the result of minor differences between the grading of optimal and good. A major advantage of rare-earth screens is a 50% or more reduction in radiation exposure. The results here show that rare-earth screens may be used in plain radiographic examinations without a clinically important decrease in image quality.

Original languageEnglish
Pages (from-to)1335-1338
Number of pages4
JournalAmerican Journal of Roentgenology
Issue number6
StatePublished - 1984


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