Method and system for reconstructing an image in a positron emission tomography (PET) system
AssigneeGeneral Electric Company
InventorsCharles William Stearns, Ravindra Mohan Manjeshwar, Floribertus Philippus Martinus Heukensfeldt Jansen
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Abstract
A method and system for reconstructing an image in a time-of-flight (TOF) positron emission tomography (PET) system is provided. The method includes using a reconstructed image to determine predicted timing information. Timing bias data is updated based on received timing information associated with acquired scan data from a PET system and the predicted timing information. The method further includes reconstructing the image, based on the updated timing bias data.
Claims16
A method for reconstructing an image in a time-of-flight (TOF) positron emission tomography (PET) system, said method comprising:
- using a reconstructed image to determine predicted timing information;
- updating timing bias data based on received timing information associated with acquired scan data and predicted timing information;
- reconstructing the image based on the updated timing bias data;
- and
- iteratively performing the updating and reconstructing steps until the difference between the predicted timing information and received timing information is below a pre-determined threshold that is based only on the difference between the predicted timing information and the received timing information.
A positron emission tomography (PET) system comprising:
- a plurality of detector elements configured to acquire scan data;
- and
- a processor configured to reconstruct an image using predetermined timing bias data and the acquired scan data from the detector elements, the acquired scan data including received timing information, said processor further configured to use the reconstructed image to determine predicted timing information, to iteratively determine differences between the predicted timing information and the received timing information associated with the acquired scan data, to calculate updated timing bias data based on the determined differences, and repeat the image reconstruction using the calculated updated timing bias data until the determined differences are below a pre-determined threshold that is based only on the determined differences between the predicted timing information and the received timing information.
A method for performing image reconstruction in a time-of-flight positron emission tomography (TOF PET) system, said method comprising:
- determining timing bias data for a TOF PET system;
- receiving timing information from the TOF PET system during an image acquisition scan of an object using the TOF PET system;
- reconstructing an image of the object using the timing bias data and the received timing information;
- using the reconstructed image to determine predicted timing information;
- iteratively determining differences between the predicted timing information and the received timing information;
- updating the timing bias data based on the determined differences;
- and
- repeating the image reconstruction using the updated timing bias data until the determined differences are below a pre-determined threshold that is based only on the determined differences between the predicted timing information and the received timing information.
Dependencies are inferred from the claim text.