工业CT系统空间分辨力测试方法

详细信息

Study on Assessment Techniques for ICT Scanner Spatial Resolution Measurement

摘要: 介绍了工业CT系统空间分辨力的测试方法，研究了扫描参数对CT系统空间分辨力的影响规律。采用直接、间接测试方法分别测试了三套工业CT系统的空间分辨力。结果表明，在相同试验条件下，直接测试方法的测试结果要明显高于间接测试方法。最后，对试验结果及测试方法之间的等效关系进行了探讨。
- 工业CT /
- 空间分辨力 /
- 标准试件 /
- 调制传递函数 /
- 扫描参数
Abstract: This paper represents the subjective method and objective method, which were dedicated to the assessment of spatial resolution in CT system, and analyses the influence rule of scan parameters on the spatial resolution of CT image. The comparative study of the two methods was carried out in 3 ICT systems under the same condition, and it was found that the test result of subject method was significantly higher than the result of object method, and then the test result and relationship between two methods was discussed.
- Industrial CT /
- Spatial resolution /
- Test object /
- MTF /
- Scan parameters

[1]	GJB 5312—2004工业射线层析成像(CT)检测［S］.
[2]	ASTM E 1695—1995Standard Test Method for Measurement of CT System Performance［S］.
[3]	GJB 5311—2004工业CT系统性能测试方法［S］.
[4]	张朝宗，郭志平，等.工业CT技术和原理［M］.北京：科学出版社,2009:51-67.