Prior Image Guided Undersampled Dual Energy Reconstruction with Piecewise Polynomial Function Constraint
Joint Authors
Xing, Yuxiang
Wu, Dufan
Li, Liang
Shen, Le
Zhang, Li
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-27
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Dual energy CT has the ability to give more information about the test object by reconstructing the attenuation factors under different energies.
These images under different energies share identical structures but different attenuation factors.
By referring to the fully sampled low-energy image, we show that it is possible to greatly reduce the sampling rate of the high-energy image in order to lower dose.
To compensate the attenuation factor difference between the two modalities, we use piecewise polynomial fitting to fit the low-energy image to the high-energy image.
During the reconstruction, the result is constrained by its distance to the fitted image, and the structural information thus can be preserved.
An ASD-POCS-based optimization schedule is proposed to solve the problem, and numerical simulations are taken to verify the algorithm.
American Psychological Association (APA)
Wu, Dufan& Zhang, Li& Li, Liang& Shen, Le& Xing, Yuxiang. 2013. Prior Image Guided Undersampled Dual Energy Reconstruction with Piecewise Polynomial Function Constraint. Computational and Mathematical Methods in Medicine،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-472308
Modern Language Association (MLA)
Wu, Dufan…[et al.]. Prior Image Guided Undersampled Dual Energy Reconstruction with Piecewise Polynomial Function Constraint. Computational and Mathematical Methods in Medicine No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-472308
American Medical Association (AMA)
Wu, Dufan& Zhang, Li& Li, Liang& Shen, Le& Xing, Yuxiang. Prior Image Guided Undersampled Dual Energy Reconstruction with Piecewise Polynomial Function Constraint. Computational and Mathematical Methods in Medicine. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-472308
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472308