• DocumentCode
    2052199
  • Title

    Iteration algorithm to correct absorption in PET

  • Author

    Pickalov, V.V. ; Likhachov, A.V.

  • Author_Institution
    Inst. of Theor. & Appl. Mech., Acad. of Sci., Novosibirsk, Russia
  • Volume
    2
  • fYear
    1999
  • fDate
    1999
  • Firstpage
    892
  • Abstract
    One of the difficulties of PET is an attenuation of emission projection data. A new approach to the problem is suggested. The idea is that the measurements have to be interrelated as soon as they refer to one object. Whole projection data are considered as an invariant function of the operator PR-1, R-1 is an algorithm solving the emission tomography problem, P is a projecting operator. An iterative algorithm restoring the emission projection data was developed. Numerical simulations were carried out
  • Keywords
    image reconstruction; inverse problems; iterative methods; medical image processing; positron emission tomography; 3D problem; absorption correction; emission projection data attenuation; invariant function; inversion problem; iteration algorithm; positron emission tomography; ray tomography approximation; whole projection data; Absorption; Attenuation; Detectors; Geometry; Iterative algorithms; Object detection; Plasma diagnostics; Plasma measurements; Positron emission tomography; Transmission line matrix methods;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
  • Conference_Location
    Seattle, WA
  • ISSN
    1082-3654
  • Print_ISBN
    0-7803-5696-9
  • Type

    conf

  • DOI
    10.1109/NSSMIC.1999.845807
  • Filename
    845807
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2052199