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.
Claims20
A method for retrospective internal gating comprising:
- acquiring a series of images at times t1 . . . tn including a moving object;
- extracting time-activity information for voxels of the images;
- generating a time varying object motion function based on the extracted time-activity information for the voxels of the images;
- determining, using the time varying object motion function, phase information for motion of the moving object;
- and
- generating an updated series of images correcting for the motion of the moving object using the determined phase information for motion of the moving object.
A non-transitory computer-readable medium encoded with a program that when executed by one or more processors cause a machine to:
- acquire a series of images at times t1 . . . tn including a moving object;
- extract time-activity information for voxels of the images;
- generate a time varying object motion function based on the extracted time-activity information for the voxels of the images;
- determine, using the time varying object motion function, phase information for motion of the moving object;
- and
- generate an updated series of images correcting for the motion of the moving object using the determined phase information for motion of the moving object.
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 a series of images at times t1 . . . tn including a moving object;
- extract time-activity information for voxels of the images;
- generate a time varying object motion function based on the extracted time-activity information for the voxels of the images;
- determine, using the time varying object motion function, phase information for motion of the moving object;
- and
- generate an updated series of images correcting for the motion of the moving object using the determined phase information for motion of the moving object.
Dependencies are inferred from the claim text.