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

Claim 0:
1. A method for motion signal recalibration, implemented on a computing device having one or more processors and one or more storage devices, the method 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, wherein the motion signal includes a respiratory signal including a plurality of peaks and a plurality of valleys;
determining durations of actual motion cycles based on durations of the plurality of motion cycles;
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 durations of actual motion cycles to obtain corrected motion cycles; and
reconstructing a PET image by gating the PET data based on the corrected motion cycles.