Contrast regularization thickness is dependent on the case of the iterative reconstruction of ct - images

摘要

The present invention relates to a process for the reconstruction of image data (f) of an object to be examined from measured data (p), wherein the measurement data (p) during a rotating movement of a radiation source of a computer tomography system around the object to be examined were detected. From the measured data (p) by means of an iterative algorithm are successively different iteration images of the object to be examined is determined, whereby in the case of the iterative algorithm in each case, the current iteration image, and high pass-filtered with the use of a size, which contrast information relating to the respective current iteration image, as a function of contrast is weighted.