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Title

Gantry tilted tilted plane Feldkamp type reconstruction algorithm

Author(s)

Yan, Ming;  Zhang, Cishen;  Liang, Hongzhu;  Zhang, Jingxin

Abstract

An approximate image reconstruction method for gantry tiled multi slice computed tomography (MSCT) is presented in this paper, which extends the Feldkamp cone beam reconstruction algorithm to overcome its inaccuracy problem caused by large cone angle. This is done by tilting the reconstructing planes to minimize the cone angle and optimally fitting the spiral segment of the source. It is shown that the image reconstruction performance of the proposed algorithm is superior to that of the Feldkamp reconstruction algorithm. Because a 3D projection data set is employed, the proposed algorithm can use the projection more efficiently than 2D approximate reconstruction algorithms. With the reduced distance from the X-ray source to the reconstruction plane, the maximum pitch value of the proposed algorithm is larger than that of conventional Feldkamp algorithm. The proposed algorithm can archive higher volume coverage speed than Feldkamp algorithm.

Publication type

Conference paper

Source

Proceedings of the 27th IEEE Annual International Conference of the Engineering in Medicine and Biology Society (EMBS 2005), Shanghai, China, 31 August - 03 September 2005, pp. 1810-1813

Publication year

2005

FOR Code(s)

0903 Biomedical Engineering

Keyword(s)

Algorithms;  Approximation theory;  Computerised tomography;  CT;  Gantry tilted;  Image reconstruction;  Maximum pitch value;  Multi-slice CT;  Optimal reconstruction plane;  Problem solving;  X rays

Publisher

IEEE

ISSN

0589-1019 (series ISSN)

ISBN

9780780387409, 0780387406

Publisher URL

http://dx.doi.org/10.1109/IEMBS.2005.1616800

Copyright

Copyright © 2005 IEEE. The published version of the paper is reproduced here in accordance with the copyright policy of the publisher. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Full text

Peer reviewed