Picture-tube video-camera radiology installation

Details Picture-tube video-camera radiology installation Picture-tube video-camera radiology installation

1986-11-12

1988-12-27

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

358111, G01N 2304, H04N 532

Patent

active

047946300

ABSTRACT:
In a radiology installation equipped with a picture-tube video camera for producing images in rapid succession, the electron beam of the camera tube has a first intensity at the time of readout of one image on the sensitive tube surface and a second non-zero intensity of substantially lower value than the first between readout of one image and write-in of the next. A control circuit for modifying the grid voltage of the camera tube is accordingly provided for varying the intensity of the electron beam.

REFERENCES:
patent: 4137454 (1979-01-01), Brandon, Jr.
patent: 4193089 (1980-03-01), Brougham et al.
patent: 4233633 (1980-11-01), Nemner
patent: 4359759 (1982-11-01), McBride et al.
patent: 4638355 (1987-01-01), Melman
Patent Abstracts of Japan, vol. 9, no. 53 (E-301) (1776), Mar. 7, 1985.
Patent Abstracts of Japan, vol. 9, no. 43 (E-298) (1776), Feb. 22, 1985.
Patent Abstracts of Japan, vol. 6, no. 107 (E-113) (1985), Jun. 17, 1982.

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