Systems and methods for positron emission tomography imaging
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorXinyu LYU
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Abstract
A method for positron emission tomography (PET) imaging may include obtaining photon information of photons that are emitted from an object and detected by detector units of a detector of a PET scanner. The method may also include obtaining, based on the photon information and lines of response (LORs), more than one coincidence window width value of the PET scanner. The method may also include determining coincidence events of the photons based on the more than one coincidence window width value.
Claims20
A system for positron emission tomography (PET) imaging, comprising:
- at least one storage device storing a set of instructions;
- and
- at least one processor in communication with the at least one storage device, wherein when the at least one processor executes the set of instructions, the system is caused to perform operations including:
- determining a field of view (FOV) of a PET scanner based on a region of interest (ROI) of an object;
- obtaining photon information of photons that are emitted from the object and detected by detector units of a detector of the PET scanner;
- determining, based on the FOV, at least one coincidence window width value of the PET scanner;
- and
- determining coincidence events of the photons based on the at least one coincidence window width value and the photon information.
A system for positron emission tomography (PET) imaging, comprising:
- at least one storage device storing a set of instructions;
- and
- at least one processor in communication with the at least one storage device, wherein when the at least one processor executes the set of instructions, the system is caused to perform operations including:
- obtaining photon information of photons that are emitted from an object and detected by detector units of a detector of a PET scanner;
- determining at least one target line of response (LOR) corresponding to the photons based on the photon information;
- for each of the at least one target LOR, obtaining a coincidence window width value that is determined based on a function of a length of the target LOR between two of the detector units of the detector;
- and
- determining coincidence events of the photons based on the coincidence window width value of the at least one target LOR.
Dependencies are inferred from the claim text.