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A cone-beam tomography algorithm for orthogonal circle-and-line orbit.

G L Zeng·G T Gullberg
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Abstract

A cone-beam algorithm which provides a practical implementation of B D Smith's cone-beam inversion formula is presented. For a cone-beam vertex orbit consisting of a circle and an orthogonal line. This geometry is easy to implement in a SPECT system, and it satisfies the cone-beam data sufficiency condition. The proposed algorithm is in the form of a convolution-back projection, and requires a pre-filtering procedure. Computer simulations show a reduction of the artifacts that are found with the Feldkamp algorithm where the cone-beam vertex orbit is a circle.

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AlgorithmsArtifactsComputer SimulationTomography, Emission-ComputedJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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G L Zeng, G T Gullberg. 1992. A cone-beam tomography algorithm for orthogonal circle-and-line orbit.. https://doi.org/10.1088/0031-9155%2F37%2F3%2F005

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