介绍非晶硅(a-Si)平板检测器的技术特性,及其取代常用的图像增强器在工业射线实时成像检测中的应用——焊缝和铸件检验。实验结果证明:选用适当型号的a-Si平板检测器,可获得优于图像增强器的像质计(IQI)灵敏度和空阃分辨力。这是工业数字射线照相技术实用化的又一新突破。 This paper introduces the technical characteristics of amorphous silicon (a-Si) flat panel detector and its application in the real-time imaging of industrial radiography instead of the commonly used image intensifier - weld and casting inspection. The experimental results show that the IQI sensitivity and spatial resolution better than the image intensifier can be obtained by choosing the appropriate type of a-Si flat panel detector. This is another breakthrough in the practical use of industrial digital radiography.