| 摘要 |
A method and CT system are disclosed for preparing reconstructed CT image data records. In at least one embodiment of the method, an initial material distribution of an examination object is determined from CT data records determined from among at least two different spectral weightings with local energy-determined attenuation values, and local measurement-spectrum-dependent weighting functions are determined using this material distribution, enabling local measurement-spectrum-dependent attenuation functions to be calculated, and the distribution of local reference materials to be determined, with the help of plausibility considerations, from a list of reference materials over at least one specified region of interest in the examination object on the basis of previously calculated local measurement-spectrum-dependent attenuation functions.
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