a method is for organ - specific image optimization in computed tomography . in this case , the hu values of a layer of the body previously recorded with a ct device are calculated and , on this basis , a first ct image is created . for this first ct image , a histogram is also created , in which the frequency distribution of the hu values is reproduced . in a histogram , at least one organ - specific hu region is defined and the latter is allocated an hu - dependent transfer function . furthermore , a second ct image is created on the basis of the previously calculated hu values for the layer of the body which has been recorded . the first and second ct image are filtered with the hu - dependent transfer function and , finally , the filtered first ct image is mixed with the filtered second ct image .