| 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, 23(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 |
| 收稿时间： | 2014-04-14 |
Explore of Different Line-pairs Test Spatial Resolution CT |
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| ZHANG Wei-guo, CAO Yu-ling, GUO Zhi-min, NI Pei-jun, ZUO Xin, WANG Xiao-yan, HAO Li-ping. Explore of Different Line-pairs Test Spatial Resolution CT[J]. CT Theory and Applications, 2014, 23(5): 815-820. |
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| Authors: | ZHANG Wei-guo CAO Yu-ling GUO Zhi-min NI Pei-jun ZUO Xin WANG Xiao-yan HAO Li-ping |
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| Affiliation: | 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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