System and method for motion signal recalibration
AssigneeUih America, Inc.
InventorsTao FENG, Gang YANG
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Abstract
The present disclosure is related to systems and methods for motion signal recalibration. The method includes obtaining a motion signal of a subject based on positron emission tomography (PET) data of the subject. The motion signal may represent a plurality of motion cycles. The method includes determining a distribution of the motion cycles. The distribution of the motion cycles may indicate a probability that each motion cycle of the plurality of motion cycles corresponds to an actual motion cycle. The method includes correcting the motion cycles of the motion signal based on the distribution of the motion cycles to obtain corrected motion cycles. The method includes reconstructing a PET image by gating the PET data based on the corrected motion cycles.
Claims20
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 based on positron emission tomography (PET) data of the subject, wherein the motion signal represents a plurality of motion cycles;
- 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 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.
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 associated with a subject based on PET data of the subject;
- determining an envelope of the motion signal, wherein the envelope of the motion signal includes a high frequency component and a low frequency component;
- processing the envelope of the motion signal by reducing the low frequency component to obtain a processed envelope of the motion signal;
- and
- determining a target motion signal by correcting, based on the processed envelope, amplitude information of the motion signal.
Dependencies are inferred from the claim text.