Joint estimation of the activity and the events of interaction in SPECT systems

S. Pedemonte, S. Arridge, B. F. Hutton, S. Ourselin

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

    Abstract

    We describe a unified probabilistic graphical model for joint reconstruction of the activity and of the coordinates of the events of interaction in Emission Imaging. This new formulation is a discrete-discrete alternative to the discrete-continuous List Mode Likelihood model described by Barrett et al. The discrete-discrete formulation allows us to account for non-homogeneous resolution of the gamma-camera while adopting computationally efficient shift-invariant projection and back-projection algorithms. We describe an application of the model for the compensation of disrupted photo-detectors is SPECT.

    Original languageEnglish
    Title of host publication2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
    Pages3397-3400
    Number of pages4
    DOIs
    Publication statusPublished - 2012
    Event2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012 - Anaheim, CA, United States
    Duration: 29 Oct 20123 Nov 2012

    Other

    Other2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012
    CountryUnited States
    CityAnaheim, CA
    Period29/10/123/11/12

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