Chinese Physics C > 2016, Vol. 40 > Issue(4): 048201 DOI: 10.1088/1674-1137/40/4/048201

Preliminary research on dual-energy X-ray phase-contrast imaging

1.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230027, China
2.
School of Engineering Science, University of Science and Technology of China, Hefei 230027, China
3.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230027, China
4.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
Dual-energy X-ray absorptiometry(DEXA) has been widely applied to measure the bone mineral density(BMD) and soft-tissue composition of the human body. However, the use of DEXA is greatly limited for low- Zmaterials 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- Zmaterials, including a single-energy method and a dual-energy method. The single-energy method is for the area density calculation of one low- Zmaterial, while the dual-energy method aims to calculate the area densities of two low- Zmaterials simultaneously. Comparing the experimental and simulation results with the theoretical ones, the new method proves to have the potential to replace DEXA in area density measurement. The new method sets the prerequisites for a future precise and low-dose area density calculation method for low- Zmaterials.
- X-ray imaging,
- dual-energy,
- phase-contrast,
- area density

References

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Hua-Jie Han, Sheng-Hao Wang, Kun Gao, Zhi-Li Wang, Can Zhang, Meng Yang, Kai Zhang and Pei-Ping Zhu. Preliminary research on dual-energy X-ray phase-contrast imaging[J]. Chinese Physics C, 2016, 40(4): 048201. doi: 10.1088/1674-1137/40/4/048201

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Received: 2015-05-19
Revised: 2015-11-25

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Supported by Major State Basic Research Development Program(2012CB825800), Science Fund for Creative Research Groups(11321503) and National Natural Science Foundation of China(11179004, 10979055, 11205189, 11205157)

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通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Preliminary research on dual-energy X-ray phase-contrast imaging

Corresponding author:Kun Gao,

Corresponding author:Kai Zhang,

1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230027, China

2. School of Engineering Science, University of Science and Technology of China, Hefei 230027, China

3. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230027, China

4. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received Date:2015-05-19

Accepted Date:2015-11-25

Available Online:2016-03-28

Fund Project:Supported by Major State Basic Research Development Program(2012CB825800), Science Fund for Creative Research Groups(11321503) and National Natural Science Foundation of China(11179004, 10979055, 11205189, 11205157)

Abstract:Dual-energy X-ray absorptiometry(DEXA) has been widely applied to measure the bone mineral density(BMD) and soft-tissue composition of the human body. However, the use of DEXA is greatly limited for low-Zmaterials 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-Zmaterials, including a single-energy method and a dual-energy method. The single-energy method is for the area density calculation of one low-Zmaterial, while the dual-energy method aims to calculate the area densities of two low-Zmaterials simultaneously. Comparing the experimental and simulation results with the theoretical ones, the new method proves to have the potential to replace DEXA in area density measurement. The new method sets the prerequisites for a future precise and low-dose area density calculation method for low-Zmaterials.

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Preliminary research on dual-energy X-ray phase-contrast imaging

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