Radiant energy – Source with recording detector – Using a stimulable phosphor
Patent
1993-12-07
1995-07-11
Hannaher, Constantine
Radiant energy
Source with recording detector
Using a stimulable phosphor
G03B 4200, G01T 129
Patent
active
054323550
ABSTRACT:
A method for representing the spatial distribution of radioactive elements of radioactively labeled samples, by means of a screen of the erasable phosphor type, in which the labeled samples are placed near this screen in order to generate thereon a latent electronic image formed by the .beta. radiation or primary electrons generated by the radioactive elements. The primary electrons emitted by the radioelements are accelerated to an energy level lying between 20 keV and 1 MeV by means of an electric field E applied between the space separating the sample and the screen. The primary electrons subjected to acceleration in the space are confined, so as to limit the lateral excursion of these primary electrons. The latent image is formed, on this screen, from the confined and accelerated primary electrons. The primary electrons can generate low energy secondary electrons in CSI screens which are thus accelerated and focussed to give enlarged images onto a screen.
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patent: 4931643 (1990-05-01), Amtmann
patent: 5260190 (1993-11-01), Shiraishi et al.
Glick Edward J.
Hannaher Constantine
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