Image reconstruction for the circle and line trajectory

    Authors

    A. Katsevich

    Comments

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    Abbreviated Journal Title

    Phys. Med. Biol.

    Keywords

    CONE-BEAM RECONSTRUCTION; NONPLANAR ORBITS; ALGORITHM; BACKPROJECTION; TOMOGRAPHY; CT; ACQUISITION; PROJECTIONS; DERIVATION; FORMULA; Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging

    Abstract

    We propose an exact shift-invariant filtered backprojection algorithm for inversion of the cone beam data in the case when the source trajectory consists of an incomplete circle and a line segment. The algorithm allows for axial truncation of the cone beam data. The length of the line scan is determined only by the region of interest and is independent of the size of the entire object. The algorithm is quite flexible and can also be used for more general trajectories consisting of several (complete or incomplete) circles and line segments. Results of numerical experiments demonstrate good image quality.

    Journal Title

    Physics in Medicine and Biology

    Volume

    49

    Issue/Number

    22

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    5059

    Last Page

    5072

    WOS Identifier

    WOS:000225629200003

    ISSN

    0031-9155

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