People who are examined by DR have no radiation to other people. DR is the abbreviation for Digital Direct Imaging System, which has the advantages of fast imaging, clear images and low radiation, and is commonly used for lung and bone examinations. China’s current regulations do not exceed a dose of 50msv per year, which is within the safe range that the human body can withstand. DR examination has a certain amount of radiation, the radiation dose of a chest X-ray is about 0.02 msv, which is similar to the amount of radiation received by a 20-hour flight via an airplane, and the normal frequency of the examination will not cause adverse effects on the body, and the person being examined is not radioactive. Completing the necessary tests in a timely manner and in accordance with the doctor’s instructions can help determine the condition, clarify the diagnosis, and provide timely treatment. After completing the DR examination, a good work routine and a diet rich in fresh fruits and vegetables will help the body’s metabolism to recover.