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/lp/ios-press/investigation-of-bpf-algorithm-in-cone-beam-ct-with-2d-general-qAbVa0HMnZ
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- Publisher
- IOS Press
- Copyright
- Copyright © 2012 by IOS Press, Inc
- ISSN
- 0895-3996
- eISSN
- 1095-9114
- DOI
- 10.3233/XST-2012-0343
- pmid
- 22948356
- Publisher site
- See Article on Publisher Site
Abstract
A mathematical derivation was conducted to illustrate that exact 3D image reconstruction could be achieved for z-homogeneous phantoms from data acquired with 2D general trajectories using the back projection filtration (BPF) algorithm. The conclusion was verified by computer simulation and experimental result with a circular scanning trajectory. Furthermore, the effect of the non-uniform degree along z-axis of the phantoms on the accuracy of the 3D reconstruction by BPF algorithm was investigated by numerical simulation with a gradual-phantom and a disk-phantom. The preliminary result showed that the performance of BPF algorithm improved with the z-axis homogeneity of the scanned object.
Journal
Journal of X-Ray Science and Technology – IOS Press
Published: Jan 1, 2012