Computed Radiography (CR) is the first digital technology used in radiological photography, which is an advanced X-ray machine formed by the combination of computer digital image processing technology and X-ray radiation technology. On the basis of the original diagnostic X-ray machine's direct film imaging, real-time image digital processing is carried out through A/D conversion and D/A conversion, thereby digitizing the image. Its emergence has broken the traditional concept of X-ray machines and achieved the transformation from analog X-ray images to digital X-ray images. The display of digital images on bone structure, joint cartilage, and soft tissue is superior to traditional X-ray imaging, and quantitative analysis of mineral salt content is also feasible. Feature 1. The most prominent advantage is high resolution, clear and delicate images. Doctors can perform various image post-processing such as digital subtraction as needed to achieve ideal diagnostic results. 2. In the perspective state, digital images can be displayed in real-time, and doctors can perform digital photography based on the patient's condition. Then, through a series of image post-processing functions such as edge enhancement, amplification, black and white flipping, image smoothing, etc., rich and reliable clinical diagnosis information can be extracted from it, especially for the discovery of early lesions, which can provide good diagnostic conditions. 3. The digital image formed by the digital X-ray machine requires less X-ray dose than traditional film imaging, so it can obtain high-definition images with lower X-ray dose, while also reducing the harm of X-ray radiation to patients