There are two main hazards of nuclear tests, including the radiation effect of the scanning instrument on the patient’s body after taking radioactive elements for scanning, but this radiation is limited to the patient himself. However, because of the short half-life of radioactive elements, most of the radioactive elements in the patient’s body will be metabolized after the examination, and the damage to the patient and the surrounding people will not be significant. However, for safety reasons, it is not recommended to contact pregnant women and infants within two days after the nuclear test.