Method for generating a virtual X-ray projection on the basis of an image data set obtained by means of an X-ray image recording device, computer program, data carrier and X-ray image recording device

摘要

The invention relates to a method for generating a virtual X-ray projection of at least one body region of a patient to be imaged with an X-ray image recording device, a corresponding computer program, a machine-readable data carrier and an X-ray image recording device. The method comprises the following steps: acquiring at least one projection data set with the x-ray image recording device representing the at least one body region of the patient to be imaged; reconstructing an image data set from the at least one projection data set, wherein the image data set represents local x-ray attenuation values in the at least one body region of the patient to be imaged; Modifying the image data set such that at least one local x-ray attenuation value is replaced by a modified x-ray attenuation value, generating a modified projection data set by forward projection of the modified image data set onto a virtual x-ray detector taking into account a virtual projection geometry, calculating intensity values for a plurality of detector elements of the virtual x-ray detector the modified projection data set under Ber taking into account the virtual projection geometry, - transforming the calculated intensity values into measured values output by the virtual X-ray detector, and - assigning the measured values to an image matrix.