数字射线检测技术是获得数字检测图像的射线检测技术。它与胶片射线照相检验技术的不同有二个方面：一是用探测器替代胶片探测射线检测信号；二是采用了图像数字化技术。图像数字化理论是数字射线检测技术的基本理论。数字射线检测技术系统由探测器系统、透照技术、图像数字化技术、图像显示与评定和技术稳定性控制构成。

The technology of digital radiography is the radiology which is available to obtain digital radiographs.The essential difference between digital radiography and film radiography is in two aspects. First,the detection of inspection signal replaces film by digital detector. Second, the digitization technique of image is used. The theory on digitization image has become the basic theory of technology of digital radiography. The technology system of digital radiography consists of detector system, exposure technique, imaging digitization technique,display and evalution of image and the control measures for technique stability.