[1]郭金川,杨勤劳,周彬,等.硬X射线纯相位衬度图像的实验获取[J].深圳大学学报理工版,2013,30(No.2(111-220)):129-132.[doi:10.3724/SP.J.1249.2013.02129]
 Guo Jinchuan,Yang Qinlao,Zhou Bin,et al.Hard X-ray pure phase-contrast image obtained directly by experiment[J].Journal of Shenzhen University Science and Engineering,2013,30(No.2(111-220)):129-132.[doi:10.3724/SP.J.1249.2013.02129]
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硬X射线纯相位衬度图像的实验获取()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第30卷
期数:
2013年No.2(111-220)
页码:
129-132
栏目:
光电工程
出版日期:
2013-03-18

文章信息/Info

Title:
Hard X-ray pure phase-contrast image obtained directly by experiment
作者:
郭金川杨勤劳周彬牛憨笨
深圳大学光电子器件与系统教育部重点实验室,广东省光电子器件与系统重点实验室,深圳 518060
Author(s):
Guo Jinchuan Yang QinlaoZhou Bin and Niu Hanben
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province, Shenzhen 518060, P. R. China
关键词:
微焦斑X射线管相衬图像自由空间传播纯相位物体X射线成像X射线硬化X射线过滤片
Keywords:
microfocus X-ray tubes phase-contrast image free space propagation pure phase object X-ray imaging X-ray hardening X-ray filter
分类号:
O 434.11;TN 14
DOI:
10.3724/SP.J.1249.2013.02129
文献标志码:
A
摘要:
基于自由空间传播的硬X射线相位衬度成像在生物学、医学诊断和材料科学等领域的重要应用,该实验研究证明,硬X射线的纯相位图像可以直接利用微焦斑X射线源获得.实验选择聚乙烯材料样品作为测试物体,样品表面划有刻痕,使用4 mm的铝片对X射线进行硬化处理,工作电压选择60 kVp.结果表明,随着放大倍数的增加,刻痕的纯相位图像越来越尖锐,而在同样条件下传统方法采集的吸收图像中,观察不到刻痕.该实验有助于理解基于传播的X射线相位衬度成像的物理机制,且验证了从双衬度图像中恢复纯相位图像方法的有效性.
Abstract:
Phase contrast imaging of hard X-rays based on the principle of phase propagation in free space has shown its potential prospects in the fields such as biology, medical and material science, etc. In this paper, we demonstrate that pure phase contrast image of hard X-rays can be obtained directly with a microfocus X-ray tube. A polyethylene sample is chosen as a test object and the X-rays are hardened by a 4 mm aluminum filter. The X-ray tube is operated at 60 kVp. The experimental findings are that the edge visibility of the pure phase image increases in sharpness with the increase of magnification from 2. These results not only help to comprehensively understand the X-ray phase propagation imaging but also validate the phase retrieval approaches from dual-contrast images.

参考文献/References:

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相似文献/References:

[1]刘 鑫,郭金川,牛憨笨.基于微焦斑源X射线传播的相衬成像模拟[J].深圳大学学报理工版,2007,24(3):261.
 LIU? Xin,GUO Jin-chuan,and NIU Han-ben.The simulation of X-ray phase-contrast imaging with partially coherence source[J].Journal of Shenzhen University Science and Engineering,2007,24(No.2(111-220)):261.

备注/Memo

备注/Memo:
Received:2011-06-24;Revised:2011-07-28;Accepted:2012-12-30
Foundation:National Natural Science Foundation of China (11074172); Key Laboratory Promotion & Development Program of Shenzhen(CXB201005240011A)
Corresponding author:Professor Guo Jinchuan. E-mail: jcguo@szu.edu.cn
Citation:Guo Jinchuan, Yang Qinlao, Zhou Bin, et al. Hard X-ray pure phase-contrast image obtained directly by experiment[J]. Journal of Shenzhen University Science and Engineering, 2013, 30(2): 129-132.

基金项目:国家自然科学基金资助项目(11074172); 深圳市科技研发资金重点实验室提升发展资助项目(CXB201005240011A)
作者简介:郭金川(1964-),男(汉族),河南省浚县人,深圳大学教授.Email:jcguo@szu.edu.cn
引文:郭金川,杨勤劳,周彬,等. 硬X射线纯相位衬度图像的实验获取[J]. 深圳大学学报理工版,2013,30(2):129-132.(英文版)
更新日期/Last Update: 2013-03-19