| 基于CCD-镜头耦合的数字X射线成像系统设计与改进 |
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| 引用本文： | 张大鹏,王义,李元景.基于CCD-镜头耦合的数字X射线成像系统设计与改进[J].核电子学与探测技术,2007,27(3):571-574. |
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| 作者姓名： | 张大鹏 王义 李元景 |
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| 作者单位： | 清华大学工程物理系,北京,100084 |
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| 摘 要： | 通过分析现有基于CCD—镜头耦合的数字X射线成像系统存在的缺陷,对系统结构进行了改进,对系统部件进行了优化。实验表明,改进后的系统除了获得良好的空间分辨率和检测灵敏度之外,还降低了正向散点噪声对图像的干扰,系统的成像质量得到明显提高。
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| 关 键 词： | 数字X射线成像 CCD 可见光弥散 散点噪声 反射片 |
| 文章编号： | 0258-0934(2007)03-0571-04 |
| 修稿时间： | 2006年2月10日 |
Design and improvement of a CCD-lens coupled digital X-ray imaging system |
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| ZHANG Da-peng,WANG Yi,LI Yuan-jing.Design and improvement of a CCD-lens coupled digital X-ray imaging system[J].Nuclear Electronics & Detection Technology,2007,27(3):571-574. |
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| Authors: | ZHANG Da-peng WANG Yi LI Yuan-jing |
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| Abstract: | Based upon the analysis of the flaws of a kind of CCD-lens coupled digital X-ray imaging systems,improvement of the structure of the system is proposed and devices employed in the system are optimized. Experimental results show that better spatial esolution and inspecting sensitivity are acquired by the improved system.Besides,positive shot noise in the image is reduced,which significantly improves the quality of the image. |
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| Keywords: | digital X-ray imaging system CCD visible lights diffusion shot noise enhanced specular reflector |
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