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

Claim 6:
7. The system of claim 3, wherein a preliminary corrected first projection image is generated by the first correction, the corrected first projection image is generated by further performing a second correction on the preliminary corrected first projection image, and the second correction comprises:
identifying one or more pixels in the preliminary corrected first projection image, the one or more identified pixels corresponding to a middle-channel of the CT scanner at the first gantry angle;
for each pixel of the one or more pixels, identifying an opposite pixel corresponding to the each pixel of the one or more pixels; and
generating the corrected first projection image corresponding to the first gantry angle based on the one or more pixels and the one or more opposite pixels.