Patent Document ID: 20080013676
Application ID: 11570101
Patent Status: 0

Claim One:
1. Computerized tomography method comprising the steps of: a) Generation of a conical beam traversing an examination area by means of a radiation source, b) Generation of a helical nPi relative movement between the radiation source and the examination area, c) Acquisition of the measured values, which depend on the intensity in the beam by means of a detector unit, where a ray of the beam is assigned to each measured value, d) Reconstruction of a CT image by means of the steps of: Derivation of the measured values partially according to the angular position of the radiation source, Generation of intermediate filter values, where an intermediate filter value is generated by filtering a derived measured value, which lie in an nPi window, along an associated filter line with a κ-filter, and where, for at least one of those derived measured values, more than one filter line is associated, and Multiplication of each intermediate filter value by a filter factor, where each intermediate filter value that has been generated by filtering the derived measured value along filter lines, which run exclusively within the Pi window, is multiplied by a filter factor, which is greater than or equal to the filter factors by which the other intermediate filter values are multiplied, Adding the weighted intermediate filter values of each measured value that lies in the nPi window to each respective filter value, Reconstruction of the CT image by back-projection of the filter values.