Patent ID: 11972510
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Computer technology (Electrical engineering)
Classification: CPC G  A | IPC G

Claim 13:
14. An X-ray imaging apparatus comprising:
a memory storing N pieces of projection data respectively corresponding to N views included in a first angular range; and
a controller storing one or more instructions and including at least one processor configured to perform the stored one or more instructions to:
obtain, based on M pieces of projection data respectively corresponding to M views among the N views, a final weight map applied when the N pieces of projection data are back-projected; and generate a final tomography image showing an object by using the final weight map and the N pieces of projection data;
wherein the final weight map is configured to remove or reduce ripple artifacts and undershoot artifacts due to a presence of afterimage data in the projection data that corresponds to a presence of metallic material.