Method and apparatus for image correction of x-ray image information

Abstract

The present invention relates to the correction of X-ray image information, e.g. the correction of X-ray image information regarding persistent currents in X-ray detector elements. X-ray detectors may be embodied as photoconductors with ohmic contacts, which output a photo current depending on the energy and amount of photons impinging on a respective photoconductor pixel. Such photoconductors may exhibit a photoconductive gain, i.e. the measured current when irradiated by X-ray is higher than the current, which would result from impinging photons only generating electron-hole pairs. To compensate for photoconductive gain a method (50) for image correction of X-ray image information is provided, comprising receiving (52) readout information of an X-ray detector element (14), wherein the readout information is dependent on impinging X- radiation (20) generating a photo current and compensating (54) the readout information for a photoconductive gain employing compensation information.

Dependencies are inferred from the claim text.