In life, people are often exposed to large or small diseases. How do we go to the hospital to infer the diagnosis of the disease? There are no more than two ways: First, the doctor has observed and confirmed the cause of the disease after the patient's description. 2. Find out the cause of the disease through the images obtained by the X-ray film. Whenever some patients hear about taking X-rays, they will not only think "Is there radiation from X-rays?" Let’s find out today whether the radiation dose of X-ray machines will cause harm to the body.
The radiation dose of dental radiographs used in dental clinics is small, the radiation dose is about 5 microsieverts, and the radiation dose of chest radiographs is about 20 microsieverts. After all, how big is this radiation amount? Let's roughly estimate that each of us in this world is in radiation at all times. According to the International Commission on Radiological Protection, the radiation limit of the general population is not more than 5 millisieverts per person per year [(mSv), which is equivalent to 5000 microsieverts (uSv)]. Generally, the radiation dose that a person receives per year is about 4 millisieverts, which is a small dose and a safe dose. About 85% of the radiation comes from the environment in which we live (in nature), and only 15% comes from medical examinations. Even if you sleep in a bed with others, you will be exposed to radiation from the body of others, about 0.05 microsieverts. Even if you prefer independence, the annual radiation dose of potassium in your body is about 390 microsieverts.
In other words, the radiation dose of watching a computer, TV or mobile phone is about 1 microsievert a year. If you eat a banana, the radiation dose is about 0.1 microsievert. If you spend a day in a radiation area that is above the equilibrium level, such as the Qinghai-Tibet Plateau, the radiation dose is about 1.2 microsieverts. Estimated by smoking two packs of cigarettes a day, the radionuclide radiation dose in cigarette tobacco is equivalent to taking a chest X-ray once a day. So we don’t have to worry about the X-ray radiation taken in the hospital.
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