Method for artifact correction during a reconstruction of at least one slice image from a plurality of projection images

A reconstruction system for performing artifact correction during a reconstruction of at least one slice image from a plurality of projection images, the reconstruction system comprising:

• an interface;
• and
• a computing circuit, at least one of the interface and the computing circuit being embodied to provide the plurality of projection images, each respective projection image of the plurality of projection images including a plurality of pixels and each respective pixel of the plurality of pixels including a respective pixel value,
• the computing circuit being further embodied to
• determine a plurality of corrected projection images,
• reconstruct the at least one slice image based on the plurality of corrected projection images,
• at least one of the interface and the computing circuit being embodied to provide the at least one slice image, wherein to determine the plurality of corrected projection images, the computing circuit is further embodied to, for each respective projection image of the plurality of projection images,
• determine an average pixel value in at least one subarea of the respective projection image,
• determine a respective correction value by multiplying the average pixel value by a scatter factor,
• determine a plurality of corrected pixel values by subtracting the respective correction value from the plurality of pixel values of the projection image,
• wherein a respective corrected projection image of the plurality of corrected projection images includes a plurality of pixels including the plurality of corrected pixel values.