Patent ID: 7436925

Claim:
A computer tomography method having the following steps: a) generating by a radiation source a bundle of rays that passes though an object moving periodically, b) producing a relative movement between the radiation source on the one hand and the object on the other hand, which relative movement comprises rotation about an axis of rotation, c) acquiring, with a detector unit and during the relative movement, of-measured values that depend on the intensity in the bundle of rays on a far side of the object, d) sensing a movement signal dependent on the movement of the object with a movement-sensing means and determining cyclically repeated phases of movement based on the movement signal sensed, e) reconstructing reconstruction of a plurality of intermediate images of a region of an object, each intermediate image being reconstructed with measured values that were acquired while the object was in a different phase of movement, and assigning a phase of movement to each intermediate image, f) determining the phase of movement in which there was least movement of the object in the region, by determining the intermediate image having the fewest motion artifacts in the region, g) reconstructing a computer tomographic image of the region from measured values that were acquired while the object was in the phase of movement in which there was least movement of the object in said region, the reconstruction parameters differing from the reconstructions parameters used to reconstruct the intermediate images.