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. 11, 1994
Filed:
Sep. 29, 1992
Julius Brunner, Rueckersdorf, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An improved filtered back-projection technique for operating a medical imaging apparatus as disclosed wherein image noise and artifacts are reduced. In the improved method, back-projection image contributions are obtained from regions which lie outside the primary examination region. Correction projections are produced from these outside regions. The image produced by back-projection of the correction projections in the examination region is subtracted from an original, uncorrected image. The integrations which are undertaken when producing the correction projections are made along respective straight lines which are also used to characterize the projection values in the original, uncorrected image.