| 不同线对卡测试CT空间分辨率差异探讨 |
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| 引用本文： | 张维国,;曹玉玲,;郭智敏,;倪培君,;左欣,;王晓艳,;郝丽萍.不同线对卡测试CT空间分辨率差异探讨[J].CT理论与应用研究,2014(5):815-820. |
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| 作者姓名： | 张维国 ;曹玉玲 ;郭智敏 ;倪培君 ;左欣 ;王晓艳 ;郝丽萍 |
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| 作者单位： | [1]中国兵器科学研究院宁波分院,浙江宁波315103; [2]北京控制工程研究所,北京100080 |
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| 摘 要： | 空间分辨率是描述工业CT系统性能的重要指标，目前测试方法有线对卡法和圆盘法，而线对卡没有统一的制作标准，常用的有条卡、圆孔形和方孔形等。本文通过理论分析和实验确定这些不同线对卡测试CT空间分辨率的结果差异及产生原因。
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| 关 键 词： | 工业CT 空间分辨率 线对卡 |
Explore of Different Line-pairs Test Spatial Resolution CT |
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| Institution: | ZHANG Wei-guo, CAO Yu-ling, GUO Zhi-min, NI Pei-jun, ZUO Xin, WANG Xiao-yan, HAO Li-ping(1 .The Ningbo Branch of Ordnance Science Institute of China, Ningbo 315103, China ;2.Beijing Institute of Control Engineering, Beijing 100080, China) |
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| Abstract: | The spatial resolution of a CT system is important, but the two established methods to measure the spatial resolution, MTF and line-pairs. Make the line-pairs no unified standard, commonly use line-pairs has bar, hole and quadratic shape. In this paper, through theoretical analysis and test to determine the different line-pairs to test the results of the spatial resolution of CT differences and reasons. |
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| Keywords: | ICT spatial resolution line-pairs |
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