Rare Earth Screens, A Real Progress In Radiology?

Abstract
The properties of intensifying screens depend mainly on the type and amount of phosphor, the binder, and its ratio to the phosphor. Screens with different speed and definition properties can be made by changing these ratio. Further improvements can be achieved by phosphors with a higher quantum efficiency. The recently introduced rare-earth phosphors give interesting results which are compared with those of conventional screens. The technical and clinical problems are discussed.

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