Computer tomograph for the determination of the transfer of momentum - spectrum in an examination zone

摘要

The present invention relates to a computed tomography apparatus with a scanning unit, the relative to an examination zone about an axis of rotation running through the examination zone is rotatable and the a radiation source for generating a beam of rays, a between the radiation source and the examination zone of the screens - arrangement for producing a radiation beam passing through the examination zone from the radiation beam and a two-dimensional, a plurality of detector elements comprehensive detector - arrangement with a part of their measuring surface primary radiation of the fan beams and with another part of their measuring surface in the examination zone detected scattered radiation produced. In this case, a perfect acquisition of the pulse transmission spectrum via achieved in that between the examination zone and the detector - arrangement, a collimator - arrangement with a plurality of laminae is arranged preferably in the focus of the radiation source cutting planes that are the fan beams divided into a number of sections, so that the gaps in a parallel to the axis of the detector elements of primarily - or scattered radiation from the same section are taken.