A method for producing a ct - image data set with a specific x-ray energy spectrum and ct - system

摘要

The invention relates to a method for producing a ct - image data set with a specific x-ray energy spectrum (s (e)) and a ct - a system (1) with program code (prg₁-prg_n) for this method. According to the invention, from the measured local weighted attenuation coefficients Material distributions and the local measuring spectrum independent, but energy-dependent weakening functions estimated iteratively preferably by means of a calculation of the local energy weight of a lead recalculated, and subsequently a ct - image data set on the basis of a predetermined energy spectrum (w (e)) and the calculated local measuring spectrum independent of the invention, however, the energy dependent weakening functions computed and issued.