On two versions of a 3 pi algorithm for spiral CT

    Authors

    A. Katsevich

    Comments

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    Abbreviated Journal Title

    Phys. Med. Biol.

    Keywords

    CONE-BEAM CT; Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging

    Abstract

    A 3pi algorithm is obtained in which all the derivatives are confined to a detector array. Distance weighting of backprojection coefficients of the algorithm is studied. A numerical experiment indicates that avoiding differentiation along the source trajectory improves spatial resolution. Another numerical experiment shows that the terms depending on the non-standard distance weighting 1/\x - y(s)\ can no longer be ignored.

    Journal Title

    Physics in Medicine and Biology

    Volume

    49

    Issue/Number

    11

    Publication Date

    1-1-2004

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    2129

    Last Page

    2143

    WOS Identifier

    WOS:000222216800002

    ISSN

    0031-9155

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