Radiation image information read out device

Details Radiation image information read out device Radiation image information read out device

1980-07-11

1983-01-18

Willis, Davis L.

Radiant energy

Automatic/serial detection of similar sources

G03C 516

Patent

active

043693679

ABSTRACT:
In a radiation image recording system in which a stimulable phosphor plate is first exposed to an imagewise radiation to store the energy of the radiation and record a latent image of a radiation image, the stimulable phosphor plate is then exposed to stimulating rays to emit light according to the stored energy of radiation, and the emitted light is detected to obtain an image signal, a radiation image read out device including a light source of stimulating rays and a photodetector to detect the light emitted from the stimulable phosphor plate upon stimulation thereof has a plurality of photodetectors. The plurality of photodetectors are divided into two groups. The output signal of one group is inversely amplified and the output signal of the other group is non-inversely amplified. The difference between the two output signals of the two groups is obtained by use of a differential amplifier to obtain an image signal free of quantum noise and electrical noise.

REFERENCES:
patent: 3255357 (1966-06-01), Kapany et al.
patent: 3859527 (1975-01-01), Luckey
patent: 4127773 (1978-11-01), West

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