Method and x-ray - ct - a system for generating computer tomogr aphis of conventional representations

摘要

The invention relates to a method for producing computer tomogr aphis of conventional representations, wherein an object to be examined (7) with at least one x-ray source (2, 3), all around, with a rotation by the rotational angle dependent measuring dose power is scanned, projection data of a plurality of viewing angles are collected, and at least similar to redundant projection data is acquired from equi-angular or angle complementary projection angles with different measuring dose distance-weighted to a projection value is interpolated and be used for the reconstruction. According to the invention, in the calculating interpolation of the at least similar to redundant projection data of an additional noise end weighting were converted into a function of the carried out each projection value present noise.Furthermore, the invention also relates to an x-ray - computer tomography - a system (1) for the production of tomography representations of an object to be examined (7) with an arithmetic unit (11), comprising computer program code (prg₁-prg_n) for the evaluation of detector data and carrying out a reconstruction, wherein the computer program code (prg_i) in the operation performs the method described above.