Patent ID: 6415013
Filing Date: 2002-07-02
Classification: A61B,G06T,Y10S

Abstract:
A method for reconstructing a volume image of an object, said method comprising:scanning an object with a multislice computed tomographic (CT) imaging system having a multislice detector array to acquire projection data of a volume of the object; filtering the acquired projection data; backprojecting the filtered projection data to reconstruct voxels of the volume image; wherein the multislice detector array has a plurality of rows and columns of detector elements and said backprojecting including interpolating the filtered projection data across both rows and columns of the multislice detector array; and providing a CORDIC processor with inputs indicative of the voxel location, said inputs including: a first input (t/k) indicative of a distance of said voxel location from an isocenter as measured in a direction perpendicular to a ray of radiation in a view passing through the isocenter; and a second input ((D+s)/k) indicative of the distance of the isocenter from the radiation source plus the distance of the voxel location from the isocenter as measured in the direction of a ray of radiation in the view passing through the isocenter.