Patent ID: 11875433
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 18:
19. A system configured to reduce error in projection data, comprising:
at least one non-transitory storage medium including a set of instructions; and
at least one processor in communication with the at least one non-transitory storage medium, wherein when executing the set of instructions, the at least one processor is configured to direct the system to:
obtain initial projection data by a cone-beam computed tomography;
reconstruct one or more uncorrected images based on the initial projection data;
determine stimulated projection data based on the one or more uncorrected images;
determine scatter components based on stimulated projection data and the initial projection data by subtracting the simulated projection data from the initial projection data;
correct the initial projection data by subtracting the scatter components from the initial projection data to generate corrected initial projection data; and
perform one or more iterations, each current iteration of the one or more iterations including:
assigning the corrected initial projection data of the last iteration as the initial projection data of the current iteration; and
correcting the initial projection data in each current iteration to generate corrected initial projection data according to the process for correcting initial projection data.