Iterative deconvolution of simultaneous dual radionuclide projections for CdZnTe based cardiac SPECT

K. Kacperski*, K. Erlandsson, S. Ben-Haim, D. Van Gramberg, B. F. Hutton

*Corresponding author for this work

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

    8 Citations (Scopus)

    Abstract

    We propose a method of separating primary 99mTc and 201TI photons in projections acquired on a SPECT camera based on CdZnTe detectors during a simultaneous dual radionuclide rest-stress myocardial perfusion scan. The method is based on a model of spectral and spatial distribution of counts in the measured projections. We use the Maximum Likelihood Expectation Maximisation (ML-EM) iterative algorithm to solve the model equations for the pure primary counts. The deconvolved primary count projections are then reconstructed using the standard OSEM algorithm. Considerable improvement of defect contrast can be observed in anthropomorphic phantom scans.

    Original languageEnglish
    Title of host publication2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
    EditorsP. Sellin
    Pages5260-5263
    Number of pages4
    DOIs
    Publication statusPublished - 2008
    Event2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany
    Duration: 19 Oct 200825 Oct 2008

    Other

    Other2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
    CountryGermany
    CityDresden
    Period19/10/0825/10/08

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