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A new reconstruction algorithm for cone-beam CT with unilateral off-centered RT multi-scan. (English) Zbl 1190.94012

Li, Tatsien (ed.) et al., Industrial and applied mathematics in China. Based in part on the 9th annual conference of the China Society for Industrial and Applied Mathematics, August 14–18, 2006. Hackensack, NJ: World Scientific (ISBN 978-981-283-875-9/hbk). Series in Contemporary Applied Mathematics CAM 10, 215-228 (2009).
Summary: In order to enlarge the horizontal field of view of cone-beam CT in industry, several scanning modes have been proposed, of which RT (rotation-translation) multi-scan mode is more practical in engineering. In this paper, we develop a BPF (backprojection-filtration)-based reconstruction algorithm for cone beam CT with unilateral off-centered RT scan mode. One feature of the algorithm is that the algorithm is able to reconstruct image directly without explicit projection data rebinning process. Therefore, it not only speeds up the image reconstruction, but also improves the spatial resolution of the reconstructed image. Another feature of the algorithm is that the projection data required for image reconstruction is approximately reduced by half. In addition, the algorithm is fit to be accelerated by graphic processing unit. The numerical experiment results verify the validity of the proposed algorithm.
For the entire collection see [Zbl 1176.00016].

MSC:

94A11 Application of orthogonal and other special functions
94A08 Image processing (compression, reconstruction, etc.) in information and communication theory
68U10 Computing methodologies for image processing
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