Patent Document ID: 20050111623
Application ID: 10995339
Patent Status: 0

Claim One:
1. A method for production of tomographic section images of an at least partially periodically moving examination object with periodically alternating movement and rest phases, comprising: moving, to scan the examination object, n focus detector combinations, wherein is at least one of 2 and 3, on coaxial spiral paths relative to the examination object, with detector output data representing attenuation of beams passing through the examination object being gathered together with at least one of indirect and direct spatial orientation data for the beams; measuring movement signals from the examination object to detect movement and rest phases; storing a time correlation between the movement data and the detector output data so that it is possible to determine retrospectively which detector data originates from which period of the movement/rest cycle; combining detector output signals from n detectors in individual subsegments, which together each produce a complete 180° segment and represent a rest phase of the moving object, wherein the complete 180° segment is composed of n subsegments depending on the desired time resolution, and wherein the n subsegments are composed of m subsegments from m successive movement periods; and carrying out a back-projection with spiral reconstruction and reformatting with the 180° segments.