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A continuous-coordinate image reconstruction method for list-mode time-of-flight position emission tomography
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE (2013) (2013)
  • Chien-Min Kao, The Univerisity of Chicago
  • Heejong Kim
  • Chang-Han Huang
  • Cheng-Ying Chou
  • Weichung Wang
  • Chin-Tu Chen
Abstract
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 Date
Winter January 16, 2013
Citation Information
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Creative Commons License
This work is licensed under a Creative Commons CC_BY International License.