What is the chest X-ray of the entrance examination?

Yes X-ray refers to X-ray, and chest X-ray examination is a commonly used X-ray examination method, which uses the characteristics of X-ray penetration, fluorescence and photographic effect to form an image of human body on the screen. However, due to the difference in density and thickness of human tissues, when X-rays penetrate different tissues of human body, the X-rays are absorbed to different degrees, so the amount of X-rays reaching the screen is different, and then different black-and-white images can be formed, which provides an effective basis for doctors' diagnosis.