Patent ID: 7418073

Claim:
A computed tomography method comprising the steps of: a) generating, using a radiation source and a diaphragm arrangement which is arranged between an examination zone and the radiation source, a fan beam which traverses the examination zone and an object present therein, b) generating relative motions, comprising a rotation of the radiation source about an axis of rotation and the object, c) acquiring measuring values which are dependent on the intensity of the radiation by means of a detector unit which detects, during the relative motions, the primary radiation from the fan beam and radiation which is coherently scattered in the examination zone or on the object, and d) reconstructing a CT image of the examination zone from the measuring values, the reconstructing including: multiplying the measuring values by a first weighting factor, which corresponds to a square of a distance between a scatter center, at which the detected ray is scattered, and a point of incidence of the scattered ray on the detector unit; multiplying the weighted measuring values by a second weighting factor, which corresponds to a reciprocal value of a cosine of the scatter angle; and backprojecting, after the steps of multiplying the measuring values by the first and second weighting factors, in a volume which is defined by two linearly independent vectors of a rotational plane and a wave vector transfer.