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Preliminary Research on Dual-Energy X-Ray Phase-Contrast Imaging

Authors :
Han, Huajie
Wang, Shenghao
Gao, Kun
Wang, Zhili
Zhang, Can
Yang, Meng
Zhang, Kai
Zhu, Peiping
Source :
Chinese Physics C Vol. 40, No. 4 (2016) 048201
Publication Year :
2015

Abstract

Dual-energy X-ray absorptiometry (DEXA) has been widely applied to measure bone mineral density (BMD) and soft-tissue composition of human body. However, the use of DEXA is greatly limited for low-Z materials such as soft tissues due to their weak absorption. While X-ray phase-contrast imaging (XPCI) shows significantly improved contrast in comparison with the conventional standard absorption-based X-ray imaging for soft tissues. In this paper, we propose a novel X-ray phase-contrast method to measure the area density of low-Z materials, including a single-energy method and a dual-energy method. The single-energy method is for the area density calculation of one low-Z material, while the dual-energy method is aiming to calculate the area densities of two low-Z materials simultaneously. Comparing the experimental and simulation results with the theoretic ones, the new method proves to have the potential to replace DEXA in area density measurement. The new method sets the prerequisites for future precise and low-dose area density calculation method of low-Z materials.<br />Comment: 7 pages, 5 figures

Subjects

Subjects :
Physics - Medical Physics

Details

Database :
arXiv
Journal :
Chinese Physics C Vol. 40, No. 4 (2016) 048201
Publication Type :
Report
Accession number :
edsarx.1505.03685
Document Type :
Working Paper
Full Text :
https://doi.org/10.1088/1674-1137/40/4/048201