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:
Jul. 03, 2001
Filed:
Nov. 24, 1998
Applicant:
Inventors:
Thomas L. Toth, Brookfield, WI (US);
Roy A. Nilsen, Menomonee Falls, WI (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/300 ;
U.S. Cl.
CPC ...
G01N 2/300 ;
Abstract
The present invention, in one form, is a system which, in one embodiment, corrects for position errors of an x-ray beam caused by dynamic movement and thermal drift of the imaging system. More specifically, signals from a detector array are utilized to determine a dynamic movement error to correct for errors caused by the rotation of a gantry and a thermal drift error to correct for imaging system x-ray beam movement errors. In one embodiment, a pre-patient collimator is utilized to alter the z-axis position of the x-ray beam as determined by the dynamic movement and the temperature error profiles.