What can X-rays check?

X-ray can evaluate the lung condition, the approximate size and shape of the heart, whether the pulmonary artery is widened, pleural effusion, fractures and so on.

X-ray chest film is mainly used to check and diagnose lung diseases, the size of the heart, ribs, pleura, chest wall mediastinum, bronchus and so on.

X-rays were originally used for medical imaging diagnosis and? X-ray crystallography, X-ray is also a kind of radiation harmful to human body, such as free radiation.

X-rays have strong penetrating ability, and can penetrate many substances that are opaque to visible light, such as ink paper, wood and so on. This invisible ray can make many solid substances have visible fluorescence, make photographic negatives sensitive and ionize air.

The application of X-ray in medical diagnosis is mainly based on its penetrability, differential absorption, photosensitivity and fluorescence.

Because X-rays are absorbed in different degrees when passing through the human body, the amount of X-rays after passing through the human body is different, which carries the information of density distribution of various parts of the human body, and the intensity of fluorescence or photosensitive effect caused on the fluorescent screen or photographic film is quite different, so shadows with different densities will be displayed on the fluorescent screen or photographic film.

X-ray diagnosis technology has become the earliest non-invasive visceral examination technology in the world.

Extended data

Hazards of x-rays

1, X-rays have certain killing and damaging effects on biological cells. Overexposure to X-rays will affect physiological functions, cause chromosomal abnormalities and lead to cancer.

2. X-ray will cause genetic variation of cells and increase the risk of cancer or infertility. Therefore, when doing X-ray chest X-ray examination, at least the gonadal organs should be protected.

3. According to the medical calculation, when a healthy woman receives fluoroscopy, each breast absorbs at least 1000 millirem of radiation, which means that the probability of breast cancer will increase 1%.

4. In X-ray examination, the radiation amount of chest radiograph is the largest, and the radiation amount of one chest radiograph is equivalent to the total amount of 10 chest radiograph. If you receive multiple X-rays in a short period of time, it will cause serious damage to body cells, decrease immunity and greatly increase the probability of inducing cancer diseases.

Baidu encyclopedia -X-ray