直接数字化X射线摄影系统的空间分辨率测试及研究

Testing and research of spatial resolution of digital radiography system

目的:通过对直接数字化X射线摄影(DR)系统空间分辨率的测量以及对测试条件与结果的分析讨论,说明正确的测试能够准确反映空间分辨率的大小,有助于把握探测器的质量关。方法:按照国家标准对DR进行空间分辨率的测试,给出测试结果后分析讨论影响测试结果的测试条件。结果:正确的测试条件能够准确反映DR系统空间分辨率。结论:国家标准所规定的DR系统测试方法符合正确操作规范,能够准确衡量探测器的成像性能,进而保证临床放射检查与诊断的准确性。

Objective： through the measurement of the Digital X ray Radiography （DR） system in spatial resolution, the test conditions and results of analysis, The article illustrated that the correct test can reflect the spatial resolution in size which is helpful to handle the quality of the detector. Methods： according to the national standard for DR the spatial resolution of the test, with the given results to discuss the impact of the test results. Results： the correct test condition can reflect the spatial resolution of the DR system. Conclusion： the national standards in DR system test method is conformed to the correct operation of norms and can measure the imaging detector performance accuratelwtherebv ensure the accuracvin clinical radiological examination and diagnosis.