Method and apparatus for collecting video frames, lines and pixe

Details Method and apparatus for collecting video frames, lines and pixe Method and apparatus for collecting video frames, lines and pixe

1990-10-05

1992-05-05

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 378 99, 358111, 358183, H04N 532

Patent

active

051114909

ABSTRACT:
A flexible video selector for use in various imaging systems including computed tomography (CT) imaging systems. A system operator inserts a number of video parameters identifying frames, lines and pixels of video information to be collected. A plurality of registers and counting devices are employed to control the video data selection. An A/D converter may be driven at intervals corresponding to the selected video information. In this manner, only video information corresponding to the selected pixels of the selected lines of the selected frame of video information are digitized for further processing. When implemented in a CT imaging system, the invention provides for x-ray dose control corresponding to the selected video parameters.

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Boone et al., "Analysis and Correction of Imperfections in the Image Intensifier TV-Digitizer Imaging Chain," 75th Annual Meeting of the Radiological Society of North America (Nov. 27, 1989, Chicago).

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