Patent ID: 11941733
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A non-transitory computer readable medium, comprising executable instructions that, when executed by at least one processor of an electronic device, directs the at least one processor to perform actions comprising:
obtaining a motion signal of a subject from positron emission tomography (PET) data of the subject, wherein the motion signal represents a plurality of motion cycles, and different motion cycles include different fluctuation degrees, wherein the motion signal includes a respiratory signal including a plurality of peaks and a plurality of valleys;
determining a distribution of the motion cycles, wherein the distribution of the motion cycles indicates a probability that each motion cycle of the plurality of motion cycles corresponds to an actual motion cycle;
correcting the motion cycles of the motion signal by flipping one or more peaks and/or one or more valleys of the respiratory signal based on the distribution of the motion cycles to obtain corrected motion cycles; and
reconstructing a PET image by gating the PET data based on the corrected motion cycles.