CPC G06T 11/008 (2013.01) [G06T 2210/41 (2013.01); G06T 2211/412 (2013.01)] | 19 Claims |
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.
|