X-ray photography conditions of legs

X-ray examination or CT examination is conducive to the diagnosis of diseases, such as fracture, fracture, liver cancer, cerebral hemorrhage, cerebral hemangioma, disc herniation, spondylitis and other diseases, which cannot be delayed. Radiological examination is conducive to the rapid diagnosis of diseases.

The radiation dose unit is "Sieverts", and the radiation dose to patients is about 20 microsieverts for chest X-ray examination, 5 microsieverts for dental or hand X-ray examination, 65,438+0 microsieverts for arm or calf X-ray examination and 5,800 microsieverts for chest CT examination.

What are the concepts of these radiation doses? The daily radiation dose of human beings is about 10 microsievert. Emperor China stipulated that the annual radiation dose of citizens should not exceed 5,000 microsieverts. According to the US Environmental Protection Agency, the annual radiation dose of citizens should not exceed 10000 microsieverts. According to the US Environmental Protection Agency, the annual radiation dose of radiation workers should be 50,000 microsieverts. The lowest dose known to affect the carcinogenicity rate is 100000 microsieverts.

To sum up, the radiation dose of ordinary X-ray examination is still very low, and the radiation dose of CT examination is high, but it will be harmful to people if it is done dozens of times.