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低成本高效率X 射线相衬成像技术研究

Low Cost and High Efficiency Method for X-ray Phase Contrast Imaging

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摘要

X 射线光栅微分相衬成像技术对由轻元素构成的物质的内部探测具有传统吸收成像无法比拟的优势,在材料领域、安检领域以及医疗领域具有广阔的应用前景。吸收光栅是系统中的关键光学器件,其制作难度大、成本高,并且吸收光栅不能完全吸收高能X 射线而导致图像衬度和检测灵敏度下降,限制了该技术的发展应用。针对上述问题,基于自主研制的低成本铋材料源光栅和能够克服高能X 射线限制的具有分析光栅功能的结构化转换屏,提出了低成本、高效率的X 射线光栅微分相衬成像方法,在实验上获得了高质量的相衬图像。

Abstract

Grating-based X-ray differential phase contrast imaging has great advantages of detecting the low- Z materials compared with conventional X- ray absorption imaging. It has potential applications in the field of materials, security and medical diagnostics. The fabrication process of absorption grating which is a critical optical component in the system is difficult and costly, and the absorption grating cannot completely absorb high- energy X- rays that results in the decrease of image contrast and detection sensitivity, which has been a great obstacle for the practical application. In view of above problems, a low cost and high efficiency approach based on Bi-source grating and structured scintillator is proposed. The scintillator overcomes the limitation of high- energy X- rays and proposes the function of analyzer grating. This approach obtains high quality phase contrast image experimentally.

Newport宣传-MKS新实验室计划
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中图分类号:O434.19

DOI:10.3788/aos201636.0334001

所属栏目:X射线光学

基金项目:国家973 计划(2012CB825804)、国家自然科学基金科学仪器基础研究专款(61227802)、国家自然科学基金(11074172)、国家自然科学基金青年科学基金(11404221)、中国博士后面上基金(2014M562204)、中国博士后基金特别资助(2015T80914)、深圳市科创委基础研究项目基金(JCYJ20150525092941019)

收稿日期:2015-09-09

修改稿日期:2015-10-19

网络出版日期:--

作者单位    点击查看

杜杨:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
刘鑫:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
雷耀虎:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
黄建衡:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
赵志刚:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
林丹樱:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
郭金川:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
李冀:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
牛憨笨:深圳大学光电工程学院, 光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060

联系人作者:杜杨(wolfduyang@163.com)

备注:杜杨(1983—),男,博士,主要从事X 射线光栅微分相衬成像方面的研究。

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引用该论文

Du Yang,Liu Xin,Lei Yaohu,Huang Jianheng,Zhao Zhigang,Lin Danying,Guo Jinchuan,Li Ji,Niu Hanben. Low Cost and High Efficiency Method for X-ray Phase Contrast Imaging[J]. Acta Optica Sinica, 2016, 36(3): 0334001

杜杨,刘鑫,雷耀虎,黄建衡,赵志刚,林丹樱,郭金川,李冀,牛憨笨. 低成本高效率X 射线相衬成像技术研究[J]. 光学学报, 2016, 36(3): 0334001

被引情况

【1】李增光,李磊,韩玉,席晓琦,闫镔,李建新. 锥束CT圆加直线轨迹反投影滤波重建算法. 光学学报, 2016, 36(9): 911008--1

【2】黄建衡,雷耀虎,杜杨,刘鑫,郭金川,李冀,郭宝平. 铋光栅X射线相衬成像条纹对比度的定量计算. 光学学报, 2017, 37(4): 434001--1

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