X-Ray intensifier foil

Details X-Ray intensifier foil X-Ray intensifier foil

1987-10-22

1990-04-03

Hannaher, Constantine

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2504861, G01T 100

Patent

active

049143034

ABSTRACT:
An intensifier foil specifically employable in mammography is provided that minimizes stationary noise and enhances topical resolution. The luminophore is composed of Gd.sub.2 O.sub.2 S:Tb grains, whose mean grain size lies between approximately 3.4 microns to about 3.6 microns. Approximately 5% to about 15% of the luminophore grains are larger than 6.5 microns and approximately 85% to about 95% are larger than 2 microns with the luminophore otherwise having a scattered grain size distribution. The bonding agent includes approximately 0.1 to about 0.2 weight percent SiO.sub.2 particles having a grain size of approximately 10 nm to about 100 nm. The substrate is constructed from a polyester foil having a dark pigment.

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The Merck Index, Martha Windholz, Editor Published by Merck & Co., Inc., Rahway, NJ, (1983), Chemical 8329, Silicon Dioxide, p. 1220.

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