X-ray or gamma ray systems or devices – Electronic circuit – Exposure timer
Patent
1981-05-27
1983-04-19
Smith, Alfred E.
X-ray or gamma ray systems or devices
Electronic circuit
Exposure timer
358111, 378 7, A61B 600, G01J 129, H01J 3149, H05G 164
Patent
active
043808182
ABSTRACT:
In an exemplary embodiment, a radiation detector for receiving the radiation emerging from the radiography subject delivers electrical output signals corresponding to the received radiation profile, generating a relative movement between the support device and the radiation beam, and with a measurand converter and a video unit for the formation of the X-ray shadow image. The radiation detector is an X-ray image intensifier with an outlet-connected television camera. A cancellation device is present which cancels the formation in the target region which is disposed immediately before the line image in the direction of movement of the line image, generated by the X-ray beam, on the target. The effect of the stray radiation on the image quality is thereby eliminated.
REFERENCES:
patent: 3101407 (1963-08-01), Shipman, Jr.
patent: 3937965 (1976-02-01), Vasseur
patent: 4179100 (1979-12-01), Sashin et al.
Grigsby T. N.
Siemens Aktiengesellschaft
Smith Alfred E.
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