The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 1978
Filed:
Apr. 11, 1977
Thomas W Lambert, Dousman, WI (US);
James E Blake, New Berlin, WI (US);
General Electric Company, Schenectady, NY (US);
Abstract
In computed tomography, a computer calculates CT numbers corresponding with the X-ray attenuation by elemental volumes in a body undergoing an X-ray beam scan. Analog signals corresponding with the sequence of CT numbers modulate a raster scanned cathode ray tube to produce a display of the image. Means are provided for controlling the display tube to display elements within a range of CT numbers or gray scale window. New means are provided for causing zones in the image corresponding with picture elements near the selected level or center of the gray scale to blink from gray to white such that when the level is set to correspond with a gray scale level of interest, the blinking zones will have CT numbers corresponding with the level setting. This permits identification of the CT numbers of the zones. The blink mode may be activated while the full image is displayed on the screen and zones of interest may be visualized in the total picture.