Method and device for compensating for differences in sensitivit

Details Method and device for compensating for differences in sensitivit Method and device for compensating for differences in sensitivit

1991-01-23

1992-08-04

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250369, 2504841, 2502521, 25037011, G01T 116

Patent

active

051361655

ABSTRACT:
A luminescent layer is exposed to X-rays or gamma rays and whose luminescence is converted into an electric signal by a photo-electric transducer. Sensitivity variations of the combination formed by the luminescent layer and the transducer are compensated for in that the luminescent layer is repeatedly exposed to an electric field, during which exposure the sensitivity of the luminescent layer and the transducer is measured and stored, a calibration factor of the measuring device is created and changed each time in dependence on the stored sensitivity.

REFERENCES:
patent: 3458700 (1969-07-01), Tadao
patent: 4220860 (1980-09-01), Carlson et al.
patent: 4634934 (1987-01-01), Tohda et al.
patent: 4764678 (1988-08-01), Yamakawa
patent: 4818877 (1989-04-01), Ayrai et al.
patent: 4862004 (1989-08-01), Koike et al.

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