Women can’t get pregnant within a short period of time after having a chest CT, and it is recommended to get pregnant after at least 2~3 months. The radiation dose of CT is relatively large and contains radioactive substances, which may cause harm to the ovarian function of women, affecting the quality of eggs and causing follicular dysplasia, etc. If you get pregnant too soon after the examination, you may experience abnormal embryonic development or early miscarriage, which is not conducive to eugenics. Generally speaking, the radioactive substances can be metabolized within 1~2 months after the chest CT examination, but the metabolism speed of individuals is different, so it is better to wait for 3 months before getting pregnant, which is conducive to eugenics and euthanasia. It is recommended to do a good job of pre-pregnancy checkups, choose to prepare for pregnancy when both spouses are in the best condition, avoid random use of medication during the preparation period, and avoid exposure to radioactive tests.