Positron emission tomography (PET) is an imaging modality that forms images of the concentration of an injected radio-pharmaceutical. These images can be combined with appropriate physiological models and ancillary measurements to yield images of physiological parameters such as perfusion, metabolic rates, receptor characteristics etc. Although images are usually reconstructed with the convolution-backprojection algorithm used in X-ray CT, there are several important differences in the data. Effects such as attenuation, Compton scatter, accidental coincidences, and detector efficiency must be accounted for. These effects are described and the key problems encountered in image reconstruction are discussed in this paper.<>


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    Titel :

    Positron emission tomography: physical models and reconstruction issues


    Beteiligte:
    Ollinger, J.M. (Autor:in)


    Erscheinungsdatum :

    01.01.1994


    Format / Umfang :

    510508 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Positron Emission Tomography: Physical Models and Reconstruction Issues

    Ollinger, J. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994


    Image Reconstruction of Positron Emission Tomography Based on Wavelet-Packets Transform

    Zhaoxia, W. / Jingzhi, C. | British Library Online Contents | 2001