System and method for reconstructing ect image
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsTao FENG, Wentao ZHU, Hongdi LI, Defu YANG, Yun DONG, Yang LYU
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Abstract
The present disclosure provides a system and method for PET image reconstruction. The method may include processes for obtaining physiological information and/or rigid motion information. The image reconstruction may be performed based on the physiological information and/or rigid motion information.
Claims21
A method implemented on at least one machine each of which has at least one processor and storage, the method comprising:
- receiving emission computed tomography (ECT) data relating to a subject;
- determining a characteristic volume of interest (VOI) of the ECT data;
- obtaining, based on the characteristic VOI, a physical motion curve relating to a physical motion;
- and
- gating the ECT data based on the physical motion curve to screen out motion related data.
A method implemented on at least one machine each of which has at least one processor and storage, the method comprising:
- receiving a plurality of emission computed tomography (ECT) data relating to a subject;
- dividing the plurality of ECT data into a plurality of subsets;
- selecting a subset of the plurality of subsets as a reference subset;
- transforming the reference subset into a reference representation;
- for each subset of the plurality of subsets except for the reference subset,
- transforming the subset into a representation;
- and
- assessing similarity between the representation and the reference representation to detect occurrence of rigid motion of the subject.
A method implemented on at least one machine each of which has at least one processor and storage, the method comprising:
- acquiring list mode data relating to a subject;
- dividing the list mode data based on time information and/or spatial information;
- establishing a relationship between data-space and reconstruction space;
- obtaining expectation information based on the divided list mode data;
- and
- determining, based on the expectation information, translation information
- and rotational information to detect a rigid motion of the subject.
-30. (canceled)
Dependencies are inferred from the claim text.