Myrna Godoy, MD

Conventional single-energy CT imaging results in an anatomic depiction of the imaged area based on depiction of differences in physical density. Dual-energy CT imaging differentiates structures of a similar density with different elemental compositions based on differing attenuations at different photon energies. Hence, dual-energy imaging moves away from imaging density toward imaging elemental, or possibly even chemical, composition (see accompanying article).