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:
Dec. 18, 2012
Filed:
Dec. 19, 2008
Giovanni Palma, Le Kremlin Bicetre, FR;
Serge Muller, Guyancourt, FR;
Razvan Iordache, Paris, FR;
General Electric Company, Schenectady, NY (US);
Abstract
A derivation procedure for a three-dimensional digital mask from a series of two-dimensional masks in a radiographic device containing a source (S) of X-rays, a means of recording and a volume of interest hat contains the object to be X-rayed located between the source (S) and the means of recording consists of an extrapolation of each mask Mincludes determining a last segment 1beyond the limits of the means of recording; and working out a two-dimensional mask Massociated with a position Sof the source, for any angle γ included in the angular range θto θ(a position close to θ). For every parallel segment 1 located between segment d (or d' respectively) and segment 1, the procedure further includes deriving a three-dimensional mask () of the object for each voxel at the intersection of plane Pand the volume of interest; and projecting the three-dimensional mask onto the segment 1.