Patent ID: 8913710

Claim:
A method for enhancing an image, comprising: receiving a first plurality of projections, wherein the first plurality of projections contain computed tomography (CT) data obtained in multiple motion phases and collected within an imaging device's field-of-view (FOV), and the CT data contains artifacts caused by a portion of a scanned object which is located outside of the imaging device's FOV; prior to performing reconstruction to generate a multi-phase image, generating a second plurality of projections by expanding the first plurality of projections, wherein the second plurality of projections have an extended FOV that covers at least the portion of the scanned object; generating the multi-phase image based on the second plurality of projections; and generating a phase-correlated image by reducing from the multi-phase image artifacts identified by a phase-correlated difference image, wherein the phase-correlated difference image is reconstructed based on the first plurality of projections and the second plurality of projections and contains the artifacts caused by the portion of the scanned object.