Methods and systems for retrospective internal gating
AssigneeMemorial Sloan Kettering Cancer Center
InventorAdam L. Kesner
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Abstract
The present invention, in one form, is a method for deriving respiratory gated PET image reconstruction from raw PET data. In reconstructing the respiratory gated images in accordance with the present invention, respiratory motion information derived from individual voxel signal fluctuations, is used in combination to create usable respiratory phase information. Employing this method allows the respiratory gated PET images to be reconstructed from PET data with out the use of external hardware, and in a fully automated manner.
Claims22
A method for retrospective internal gating comprising:
- acquiring image data corresponding to times t1 . . . tn to be used to generate one or more images corresponding to a moving object;
- extracting information for a plurality of arrays derived from the image data;
- generating a time varying object motion function based on the extracted information for the plurality of arrays of the image data;
- determining, using the time varying object motion function, phase information for motion of the moving object;
- and
- generating at least one image correcting for the motion of the moving object using the determined phase information for motion of the moving object and the acquired image data.
A non-transitory computer-readable medium encoded with a program that when executed by one or more processors cause a machine to:
- acquire image data corresponding to times t1 . . . tn to be used to generate one or more images corresponding to a moving object;
- extract information for a plurality of arrays derived from the image data;
- generate a time varying object motion function based on the extracted information for the plurality of arrays of the image data;
- determine, using the time varying object motion function, phase information for motion of the moving object;
- and
- generate at least one image correcting for the motion of the moving object using the determined phase information for motion of the moving object and the acquired image data.
A system comprising:
- one or more processors;
- and
- a non-transitory computer-readable medium having instructions stored thereon that when executed by the one or more processors cause the system to:
- acquire image data corresponding to times t1 . . . tn to be used to generate one or more images corresponding to a moving object;
- extract information for a plurality of arrays derived from the image data;
- generate a time varying object motion function based on the extracted information for the plurality of arrays of the image data;
- determine, using the time varying object motion function, phase information for motion of the moving object;
- and
- generate at least one image correcting for the motion of the moving object using the determined phase information for motion of the moving object and the acquired image data.
Dependencies are inferred from the claim text.