• DocumentCode
    545174
  • Title

    Kalman restoration of SPECT images

  • Author

    Boulfelfel, D. ; Rangayyan, R.M. ; Hahn, L.J. ; Kloiber, R. ; Kuduvalli, G.

  • Author_Institution
    Department of Electrical and Computer Engineering, University of Calgary, Calgary, Alberta, Canada T2N 1N4
  • Volume
    5
  • fYear
    1992
  • fDate
    Oct. 29 1992-Nov. 1 1992
  • Firstpage
    1866
  • Lastpage
    1867
  • Abstract
    The discrete filtered backprojection (DFBP) algorithm used for the reconstruction of single photon emission computed tomography (SPECT) images affects image quality because of the operations of filtering and discretization. The discretization can cause the modulation transfer function (MTF) of the SPECT images to be anisotropic and nonstationary. This study presents the application of a two-dimensional (2-D) shift-variant Kalman filter for restoring SPECT images. Quantitative analysis of the restored images performed through measurement of root mean squared (RMS) errors shows a considerable reduction in error of Kalman-filtered images over images restored using shift-invariant methods.
  • Keywords
    Collimators; Computational modeling; Image restoration; Kalman filters;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Engineering in Medicine and Biology Society, 1992 14th Annual International Conference of the IEEE
  • Conference_Location
    Paris, France
  • Print_ISBN
    0-7803-0785-2
  • Electronic_ISBN
    0-7803-0816-6
  • Type

    conf

  • DOI
    10.1109/IEMBS.1992.5762076
  • Filename
    5762076
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=545174