1. A method for organ-specific image optimization in computed tomography (CT), comprising: recording a layer of a body with a CT device; creating a first CT image based upon Hounsfield values (HU values) calculated for the recorded layer of the body; creating an HU-value frequency distribution of the first CT image of a layer in a histogram; defining at least one organ-specific HU region; allocating an HU-dependent transfer function to the organ-specific HU region; and filtering the first CT image with the IU-dependent transfer function; creating a second CT image based upon the HU values calculated for the recorded layer of the body; filtering the second CT image with the HU-dependent transfer function; and mixing the filtered first CT image with the filtered second CT image.