Radiant energy – Luminophor irradiation
Patent
1976-03-15
1977-12-06
Anderson, Bruce C.
Radiant energy
Luminophor irradiation
250416R, H05G 130
Patent
active
040619206
ABSTRACT:
The invention relates to an X-ray installation which comprises a television display device and an automatic exposure device and in which dominant selection is no longer required. The television image produced during fluoroscopy is sub-divided into a large number of sub-fields, a storage position being assigned to each sub-field. In each storage position the part of the video signal is stored which corresponds to the assigned sub-field. The sub-fields are then determined which contain the regions of the maximum and the minimum brightness. An effective, organ-programmed intermediate value is derived therefrom. Moreover, the mean value of the video signal is obtained in the part of the television image assigned to the sole central measuring field of the automatic exposure device. The mean value is compared with the intermediate value, and the switch-off dose or switch-off voltage is corrected in dependence of the difference thus found.
REFERENCES:
patent: 2796527 (1957-06-01), Oosterkamp et al.
patent: 3573461 (1971-04-01), Ohlsson
patent: 3602641 (1971-08-01), Heise
patent: 3821552 (1974-06-01), Hermeyer
patent: 3894235 (1975-07-01), Franke
patent: 3974385 (1976-08-01), Grim
Lux Peter
Mollendorf Ralf
Anderson Bruce C.
Trifari Frank R.
U.S. Philips Corporation
LandOfFree
X-ray installation comprising an image intensifier/image pick-up does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with X-ray installation comprising an image intensifier/image pick-up, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray installation comprising an image intensifier/image pick-up will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1552685