Patent ID: 7889901

Claim:
A computed tomography method having the following steps: a) generation with a radiation source of a conical beam bundle passing through an examination zone and a periodically moving object located therein, b) generation of a nPi-relative movement between the radiation source on the one hand and the examination zone on the other hand, which comprises a rotation about an axis of rotation and a displacement in a displacement direction parallel to the axis of rotation and takes the form of a helix, c) acquisition by means of the detector unit, during the nPi-relative movement, of measured values that are dependent on the intensity in the beam bundle on the other side of the examination zone, d) determination of filter values by filtering the measured values and dividing the filter values into different groups, e) weighting of the filter values of at least one group in dependence on the movement of the object, wherein, when filter values of several groups are weighted, filter values of different groups are differently weighted in dependence on the movement of the object, f) reconstruction of a CT image of the examination zone from the filter values.