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:
Feb. 20, 2007
Filed:
Feb. 09, 2004
Dominic J. Heuscher, Aurora, OH (US);
Kevin M. Brown, Mentor-on-the-Lake, OH (US);
Dominic J. Heuscher, Aurora, OH (US);
Kevin M. Brown, Mentor-on-the-Lake, OH (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A conebeam computed tomography scanner () acquires conebeam projection data along a generally helical source trajectory around an examination region (). An exact reconstruction processor () includes a convolution processor () and an aperture weighted backprojection processor (). The convolution processor () performs at least one convolution of the acquired projection data. The convolving operates on projection data falling within an exact reconstruction window () and on at least some redundant projection data falling outside the exact reconstruction window () to produce convolved projection data. The aperture-weighted backprojection processor () performs aperture-weighted backprojecting of the convolved projection data using an aperture weighting function that weightedly combines at least some convolved redundant projection data with convolved projection data falling within the exact reconstruction window () to generate a reconstructed image with contributions from redundant projection data.