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2013 Forming Mechanism and Correction of CT Image Artifacts Caused by the Errors of Three System Parameters
Ming Chen, Gang Li
J. Appl. Math. 2013(SI05): 1-7 (2013). DOI: 10.1155/2013/545147

Abstract

We know that three system parameters, a center of X-ray source, an isocenter, and a center of linear detectors, are very difficult to be calibrated in industrial CT system. So there are often the offset of an isocenter and the deflection of linear detectors. When still using the FBP (filtered backprojection) algorithm under this condition, CT image artifacts will happen and then can seriously affect test results. In this paper, we give the appearances and forming mechanism of these artifacts and propose the reconstruction algorithm including a deflection angle of linear detectors. The numerical experiments with simulated data have validated that our propose algorithm can correct CT images artifacts without data rebinning.

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Ming Chen. Gang Li. "Forming Mechanism and Correction of CT Image Artifacts Caused by the Errors of Three System Parameters." J. Appl. Math. 2013 (SI05) 1 - 7, 2013. https://doi.org/10.1155/2013/545147

Information

Published: 2013
First available in Project Euclid: 14 March 2014

zbMATH: 1266.94006
Digital Object Identifier: 10.1155/2013/545147

Rights: Copyright © 2013 Hindawi

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