A method is disclosed for enhancing a CT image composed of a plurality of elements, each having an intensity value indicative of a tissue type. The method comprises receiving (101) a first CT image, providing, by enhancement processing (103) based on said first CT image, a plurality of copies of said first CT image, and combining (104) said copies with said first CT image, whereby an enhanced CT image is provided. The combining is based on a classification with respect to intensity values of regions within said first and said copies of said first CT image. The enhancement processing (103) is performed with respect to predetermined intensity value ranges. The method may be implemented as a computer program product or as a device.