A method of generating a computed tomography image is disclosed herein. The method includes acquiring a first plurality of projections at a first energy level and acquiring a second plurality of projections at a second energy level. The method includes reconstructing an image from the first plurality of projections and generating a synthesized projection from the image that corresponds to one of the second plurality of projections. The method includes comparing the synthesized projection to the one of the second plurality of projections and modifying the image to form an updated image based on the comparing the synthesized projection to the one of the second plurality of projections. A computed tomography imaging system is also disclosed.