DR refers to the digital radiography system, which is the most widely used radiological examination method in clinical practice, with the following scope of application: 1. respiratory system, which can check whether the patient has pneumonia, tuberculosis, lung cancer, lung abscess, bronchiectasis, pleural thickening, adhesions, pleural occupancy, and pleural effusion. 2. can help diagnose mediastinal as well as cardiac diseases. 3. abdominal diseases, such as whether the patient has gastrointestinal obstruction, perforation, or urinary stones. 4. For example, whether the patient has gastrointestinal obstruction, perforation, or stones in the urinary system.4. Bone and joint system, such as whether the patient has fractures, determining the type of fractures, whether there are bone tumors, bone and joint dislocation, osteoporosis, osteophytes, etc.5. Can determine the location of the female birth control ring.