1. A method comprising: obtaining a first image of an anatomical object corresponding to a first radiation energy, wherein the anatomical object comprises one or more tissues; obtaining at least one second image of the anatomical object corresponding to at least one second radiation energy, wherein the at least one second radiation energy is distinct from the first radiation energy; determining joint attenuation characteristics of each tissue at the first radiation energy and the at least one second radiation energy; and selectively filtering, from a reference image, attenuation values due to at least one tissue of the one or more of tissues to generate an enhanced image, wherein the reference image is one of the first image or the at least one second image.