Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen.

DUI

D014963 MeSH Prohlížeč

CUI

M0023038

Předchozí užití

Angiography (1977-1981); Mammography (1977-1981); Radiographic Image Enhancement (1977-1981); Radiography (1977-1981); Technology, Radiologic (1977-1981)

Historická pozn.

89(82); was see under RADIOGRAPHIC IMAGE ENHANCEMENT 1982-88

Veřejná pozn.

89; was see under RADIOGRAPHIC IMAGE ENHANCEMENT 1982-88