A continuous-coordinate image reconstruction method for list-mode time-of-flight position emission tomographyNuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE (2013) (2013)
We present a new formulation for reconstructing list-mode time-of-flight (TOF) positron emission tomography (PET) data onto the continuous-coordinate event space based on maximizing the likelihood function. With this formulation, the spatial resolution is not limited by the a priori choice of the image voxels. We derive an iterative reconstruction algorithm and propose a serial processor (SP) for practical use. This SP reconstruction may support concurrent imaging, which is a new feature for PET imaging. The SP reconstruction approach is examined by using computer-simulated TOF PET data having a 600 ps FWHM concidence time resolution. Preliminary results show that the proposed approach is very promising.
Publication DateWinter January 16, 2013
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