| 摘要 |
The present invention relates to differential phase-contrast imaging of an object. Polychromatic X-ray radiation (114) penetrating an object (108) is attenuated non-uniformly by the tissue structure of the object (108), known as beam hardening. Accordingly, it may be beneficial to consider the effect of beam hardening when generating X-ray image information from differential phase-contrast image data. Thus, a method (400) for generating image data of an object (108) employing phase-contrast imaging is provided employing receiving (402) an X-ray projection of an object (108) to be examined, generating (404) differential phase contrast image data of the object (108) and storing (406) generated differential phase contrast image data image data of the object (108). The generation of differential phase contrast image data of the object comprises a correction for beam hardening of X-ray radiation the object (108). |
