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

Claim 15:
16. The system of claim 15, wherein the simulated projection data of each of the one or more bins correspond to a plurality of voxels, and to determine the simulated projection data corresponding to a bin, the at least one processor is further configured to direct the system to:
convert the first image into a physical density distribution;
segment, based on the physical density distribution or CT numbers of the first image, the first image into one or more categories; and
for each of the one or more bins,
determine, based on the one or more categories and the energy range corresponding to the bin, a mass attenuation coefficient matrix for the plurality of voxels corresponding to the bin;
determine, based on the mass attenuation coefficient matrix and the physical density distribution, a linear attenuation coefficient matrix corresponding to the bin; and
determine, based on the linear attenuation coefficient matrix, the simulated projection data of the bin.