There is no clear time frame for how long it takes for a man to impregnate his partner after a CT. Generally speaking, according to the existing theoretical knowledge structure, it is recommended to wait for half a year before impregnating the spouse. The reason is that the human body will absorb more X-rays during the CT procedure, which may have a certain impact on the male’s reproductive health and cause abnormal sperm quality. Nowadays, with the improvement of living standard, pregnancy preparation has been raised to a very important level. Therefore, before getting pregnant, both men and women need to prepare for pregnancy, and it is recommended to get pregnant after six months after exposure to X-rays.