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:
Oct. 24, 2000
Filed:
Dec. 14, 1998
Wen-Tai Lin, Niskayuna, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method and apparatus are provided for updating an image pixel in both ray-driven and pixel-driven tomographic systems. The method includes the steps of determining (300) a distance and a ray angle of the pixel from an X-ray source of the ray-driven tomographic system and retrieving (302) a plurality of projection data elements based upon the ray angle. The method further includes the steps of retrieving (304) a corresponding set of interpolation values from a lookup table based upon the determined distance and ray angle and multiplying (306) the interpolation value by a respective projection data element. The method also includes the step of summing (308) the multiplied projection data elements and interpolation values.