X-ray image intensifier and application to a digital radiology s

Details X-ray image intensifier and application to a digital radiology s X-ray image intensifier and application to a digital radiology s

1984-04-23

1987-02-24

DeMeo, Palmer C.

Electric lamp and discharge devices

Photosensitive

Having phosphor screen

313543, H01J 3150, H01J 4018

Patent

active

046459715

ABSTRACT:
The thickness of the layer of luminescent material on the edges of the screen at approximately 1/10.degree. from the edge of the image field is approximately 15 to 25% smaller than its thickness at the center of the screen. Thus the length of the x-ray path within the luminescent material is substantially the same irrespective of the angle of incidence of the x-rays on the screen and, when the x-ray energy varies, the sensitivity at all points of the screen varies substantially in the same manner. The screen in accordance with the invention is primarily employed in digital radiology systems in which the same image is produced several times by utilizing different x-ray energies.

REFERENCES:
patent: 2820146 (1958-01-01), Kunes
patent: 2955219 (1960-10-01), Niklas
patent: 3697795 (1972-10-01), Braun et al.
patent: 3716713 (1973-02-01), Levin

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