In general, it is recommended that patients after taking CT, in 3-6 months before having children, this is safer, conducive to eugenics, because CT on the human body examination is the use of radiation, so there will be a certain amount of radiation damage to the human body, especially to the more sensitive to radiation gonadal, in the CT irradiation will affect the health of the sperm or the egg, may lead to fetal deformities, brain dysplasia, and some may also lead to early miscarriage. In some cases, it may lead to early miscarriage, so for safety reasons, it is generally recommended to prepare for pregnancy after 3-6 months, which is better. Patients should also take folic acid and other substances to ensure that their bodies are in perfect health before having children, and it is recommended that patients consult with an obstetrician/gynecologist before having children.