From the point of view of eugenics, it is best to have children three months after the CT during ovulation, although the radiation is relatively small, for women who are preparing for pregnancy, it may damage the germ cells or embryos. A certain amount of radiation will be used to perform a CT examination. Although the amount of radiation is relatively small and may cause damage to normal healthy people, for women who are preparing for pregnancy, a CT examination may cause damage to germ cells and embryos. Therefore, it is recommended to wait for the radiation to completely disappear before having a baby, preferably at an interval of three months, usually after two to three menstrual periods, the eggs affected by radiation basically completely disappeared before starting to prepare for pregnancy. It should be noted that women who have gotten pregnant after having a CT during ovulation are also not advised to terminate the pregnancy because of the CT. It is recommended that regular checkups be done to ensure that the fetus is developing normally and that the pregnancy can continue, but if there is any abnormality, it is still necessary to listen to the doctor’s advice.