After CT in men, it is generally recommended to wait 3 months before preparing for a child. This is because a normal production cycle of male sperm may take about 76-90 days. Generally speaking, the amount of radiation men receive from CT is relatively low, and this radiation does not affect human health, but this radiation can have a certain effect on sperm, possibly leading to an increase in malformation rates. Therefore, if men want to conceive a child, for safety reasons, it is recommended to conceive after 3 months for greater safety.