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| 双近贴式X射线像增强器成像系统的三维噪音测量及其分析技术 | |
| 引用本文： | 李伟,赵宝升,张兴华,赵菲菲,张蕊利,李汉志.双近贴式X射线像增强器成像系统的三维噪音测量及其分析技术[J].光子学报,2009,38(8). |
| 作者姓名： | 李伟 赵宝升 张兴华 赵菲菲 张蕊利 李汉志 |
| 作者单位： | 1. 中国科学院西安光学精密机械研究所,瞬态光学与光子技术国家重点实验室,西安,710119中国科学院研究生院,北京,100039;长安大学,信息工程学院,西安,710119 2. 中国科学院西安光学精密机械研究所,瞬态光学与光子技术国家重点实验室,西安,710119 3. 中国科学院西安光学精密机械研究所,瞬态光学与光子技术国家重点实验室,西安,710119;中国科学院研究生院,北京,100039 |
| 基金项目： | 西安市科技创新支撑计划 |
| 摘 要： | 针对基于双近贴式X射线像增强器的射线成像系统,提出了该系统的三维噪音测试及分析方法.分析了各噪音因子的含义,用三维曲线描绘出空间域和时间域噪音的分布情况,结合数字图像处理技术,测量了双近贴式X射线像增强器成像系统在微焦斑射线源四种照射条件下的三维噪音,并对其结果进行分析.分析表明,其结果与双近贴式X射线像增强器成像系统实际性能相吻合. |
| 关 键 词： | X射线像增强器 三维噪音 空间噪音 时间噪音 射线成像系统 |
3-D Noise Measurement and Analysis for a Double Proximity Focusing X-ray Image Intensifier Radiography Imaging System |
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| LI Wei,ZHAO Bao-sheng,ZHANG Xing-hua,ZHAO Fei-fei,ZHANG Rui-li,LI Han-zhi.3-D Noise Measurement and Analysis for a Double Proximity Focusing X-ray Image Intensifier Radiography Imaging System[J].Acta Photonica Sinica,2009,38(8). | |
| Authors: | LI Wei ZHAO Bao-sheng ZHANG Xing-hua ZHAO Fei-fei ZHANG Rui-li LI Han-zhi |
| Institution: | 1 State Key Laboratory of Transient Optics and Photonics;Xi'an Institute of Optics and Precision Mechanics;Chinese Academy of Sciences;Xi'an 710119;China;2 Graduate University of Chinese Academy of Sciences;Beijing 100049;China;3 School of Information Engineering;Chang'an University;China |
| Abstract: | A double proximity focusing X-ray image intensifier radiography imaging system was made as an experimental object.A new method was used for measuring and analyzing 3-D noise of this system.By analyzing 3-D noise of this system,the distribution of noise both in time field and frequent field with curves of three dimentions was drawn.The 3-D noise of a double proximity focusing X-ray image intensifier radiography imaging system was measured and analyzed under four different conditions with the help of digital ... |
| Keywords: | X-ray image intensifier 3-D noise Spatial noise Temporal noise Radiography |
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