Siemens Aktiengesellschaft

Ernst Peter Rührnschopf

Philipp Bernhardt

Jan Boese

Bernhard Scholz

Helmuth Schramm

Friedrich Koch

Martin Kolarjk

The invention relates to a method and an x-ray examination unit for analyzing and representing x-ray projection images with an x-ray examination unit, where the function relation b=&#x192;(J/J) is established between the attenuation value and a material-equivalent value as a function of the energy spectrum used, and for the purposes of projection representation, the magnitude of the material-equivalent value bof a specific material is represented as an image value.

Method for analyzing and representing x-ray projection images and x-ray examination unit

A device and a method for the multispectral correction of radiation hardening in computer tomography with variable tube voltage is described. In particular, a water correction and a post-reconstructive hardening correction is disclosed. To perform the water correction, project image data is corrected, in that correction values are obtained from a previously determined correction table, by means of which a correction of the projection image data can be performed. By means of an image reconstruction, this produces a corrected volumetric image.

Device and method for computer tomography

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Erlangen, Germany

Ernst Peter Rührnschopf