Patent ID: 11875434
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A system, comprising:
a storage device storing a set of instructions; and
at least one processor in communication with the storage device, wherein when executing the set of instructions, the at least one processor is configured to cause the system to:
obtain a plurality of projection images of a subject, the plurality of projection images being generated according to scan data acquired by a CT scanner at a plurality of gantry angles, each of the plurality of projection images corresponding to one of the plurality of gantry angles; and
correct the plurality of projection images by performing one or more iterations, an iteration of the one or more iterations including:
correcting the plurality of projection images in the iteration to generate a plurality of corrected projection images;
determining whether the plurality of corrected projection images in the iteration satisfy a condition; and
in response to determining that the plurality of corrected projection images fail to satisfy the condition, designating the plurality of corrected projection images in the iteration as the plurality of projection images in a next iteration.