A method for imaging an object is presented. The method includes acquiring a first projection image of the object using a source and a detector, positioning a scatter rejecting aperture plate between the object and the detector, and acquiring a second projection image of the object with the scatter rejecting aperture plate disposed between the object and the detector. A scatter image of the object is generated based on the first projection image and the second projection image, and stored for subsequent imaging. A volumetric CT system for imaging an object is also presented. The system is configured to acquire a plurality of projection images of the object from a plurality of plurality of projection angles.
