Patent ID: 8000433

Claim:
A method of creating images in computer tomography, comprising: rotating at least one focus, to scan an object under examination with a beam originating from the at least one focus, relative to the object on at least one focal path running around the object, wherein a detector array including a plurality of distributed detector elements arranged in rows and lines and the detector array is adapted to detect rays of the beam and is adapted to supply initial data representing an attenuation of the rays passing through the object under examination; filtering the initial data, wherein before the filtering, the initial data is obtained in fan beam geometry and rebinned into parallel beam geometry, and the filtering is carried out in a direction of a tangent to the at least one focal path belonging to the respective focal position; backprojecting the filtered initial data, three-dimensionally, to produce at least one slice of a layer of the object having a layer thickness, the slice representing radiation absorption values of voxels belonging to the layer of the object, wherein, during the backprojection, the rays are weighted as a function of corresponding position in the beam with a weighting function representing a smooth function of the row number, the weighting function having a value of one for rays to at least one centrally located detector row, tending to zero for rays to detector rows towards an edge of the detector rows, and zero for rays to detector rows at the edge of the detector rows.