| X射线源焦点尺寸测量方法和标准综述 |
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| 引用本文： | 韩放达,;肖永顺,;常铭,;朱晓骅.X射线源焦点尺寸测量方法和标准综述[J].中国体视学与图像分析,2014(4):321-329. |
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| 作者姓名： | 韩放达 ;肖永顺 ;常铭 ;朱晓骅 |
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| 作者单位： | [1]清华大学工程物理系,北京100084; [2]粒子技术与辐射成像教育部重点实验室清华大学,北京100084 |
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| 基金项目： | 交通运输建设科技项目（2013 328 49A 090） |
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| 摘 要： | x射线源焦点尺寸对于图像质量有显著影响，在高放大比和大焦点情形下，焦点模糊会降低图像的空间分辨率；此外，焦点尺寸也是衡量x射线源X-作性能的标准。本文介绍了焦点尺寸测量的相关概念和研究现状，对X射线源（包括X射线管和直线加速器）焦点尺寸的测量方法和标准进行了分析总结，也对焦点测量技术的最新进展和相关应用进行了介绍。
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| 关 键 词： | X射线源 焦点尺寸 测量 |
Review of measurement methods and standards of focal spot size of X-ray sources |
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| Affiliation: | HAN Fangda XIAO Yongshun, CHANG Ming ZHU Xiaohua( 1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China; 2. Key Laboratory of Particle ＆ Radiation Imaging of Ministry of Education (Tsinghua University) , Beijing 100084, China) |
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| Abstract: | The focal spot size of X-ray source has great impact on the image quality, and focal blur can degrade spatial resolution of the image. In addition, focal spot size is an important standard to evaluate the performance of X-ray source. This article first introduces some conceptions and previous work related to the measurement of X-ray sources, then analyzes and summarizes relevant methods and standards. It also introduces new progress and applications in measurement techniques of X-ray focal spot size and puts for- ward several suggestions for the future work. |
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| Keywords: | X-ray source focal spot size measurement |
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