Patent ID: 9044153
Filing Date: 2015-06-02
Classification: A61B,G01T,G06T

Abstract:
1. A method for random sinogram variance reduction in continuous bed motion acquisition, the method comprising: acquiring, with a positron emission tomography (PET) scanner having a plurality of rings of detectors, line-of-response events from a patient while the patient is moving in the PET scanner, at least some of the line-of-response events comprising random contribution; modeling, by a processor of a PET system, the random contribution as a product of transverse singles efficiencies with the plurality ring detectors treated as one ring along an axial direction; reducing, by the processor of the PET system, variance of the random contribution as a function of the modeling; and reconstructing, by the processor of the PET system, an image of the patient as a function of the reducing.