Title

Image reconstruction for the circle and line trajectory

Authors

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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