At present, the shooting of X-rays are generally DR, for example, have done the orthopantomograph of the chest, the price is 70 yuan, that is, shooting a part is 70 yuan. At present, X-rays are mainly used for fractures of limbs, bones and joints, and chest X-ray, but with the development of machines, it is better to do chest CT for screening of lung lesions, which shows clearer and more accurate lesions than X-rays, and can detect early lung cancer, while X-rays may have a certain leakage rate. Currently, low-dose spiral CT is used for early lung cancer screening.