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:
May. 08, 2001
Filed:
Aug. 25, 1998
Hui Hu, Waukesha, WI (US);
General Electric Company, Schnectady, NY (US);
Abstract
The present invention allows for accurate reconstruction of images based on multislice CT system scans using a tilted gantry. The present invention comprises a system and method for shifting the center of rotation of a reconstructed image into alignment with a longitudinal patient axis based on the tilt angle value. The present invention provides an algorithm to determine an offset amount for aligning the image. The offset amount is determined from a plurality of raw projection data used to formulate the image. The offset amount is provided for both axial and helical scanning and allows the reconstruction of an accurate image. Additionally, the system and method of the present invention provide a table speed offset and an indexing offset to account for the discrepancy in thickness of the x-ray beam at the longitudinal patient axis between tilted and non-tilted scans.