A Method to Improve Electron Density Measurement of Cone-Beam CT Using Dual Energy Technique
Joint Authors
Men, Kuo
Dai, Jian-Rong
Li, Ming-Hui
Chen, Xin-Yuan
Zhang, Ke
Tian, Yuan
Huang, Peng
Xu, Ying-Jie
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-05
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Purpose.
To develop a dual energy imaging method to improve the accuracy of electron density measurement with a cone-beam CT (CBCT) device.
Materials and Methods.
The imaging system is the XVI CBCT system on Elekta Synergy linac.
Projection data were acquired with the high and low energy X-ray, respectively, to set up a basis material decomposition model.
Virtual phantom simulation and phantoms experiments were carried out for quantitative evaluation of the method.
Phantoms were also scanned twice with the high and low energy X-ray, respectively.
The data were decomposed into projections of the two basis material coefficients according to the model set up earlier.
The two sets of decomposed projections were used to reconstruct CBCT images of the basis material coefficients.
Then, the images of electron densities were calculated with these CBCT images.
Results.
The difference between the calculated and theoretical values was within 2% and the correlation coefficient of them was about 1.0.
The dual energy imaging method obtained more accurate electron density values and reduced the beam hardening artifacts obviously.
Conclusion.
A novel dual energy CBCT imaging method to calculate the electron densities was developed.
It can acquire more accurate values and provide a platform potentially for dose calculation.
American Psychological Association (APA)
Men, Kuo& Dai, Jian-Rong& Li, Ming-Hui& Chen, Xin-Yuan& Zhang, Ke& Tian, Yuan…[et al.]. 2015. A Method to Improve Electron Density Measurement of Cone-Beam CT Using Dual Energy Technique. BioMed Research International،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1057036
Modern Language Association (MLA)
Men, Kuo…[et al.]. A Method to Improve Electron Density Measurement of Cone-Beam CT Using Dual Energy Technique. BioMed Research International No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1057036
American Medical Association (AMA)
Men, Kuo& Dai, Jian-Rong& Li, Ming-Hui& Chen, Xin-Yuan& Zhang, Ke& Tian, Yuan…[et al.]. A Method to Improve Electron Density Measurement of Cone-Beam CT Using Dual Energy Technique. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1057036
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1057036