After a CT scan, it is best to consider pregnancy three months after the test. This is because CT examinations have a relatively large amount of radiation, and it takes about three months for this radiation to be completely cleared from the body, and after it is completely cleared, you should consider getting pregnant again. Before planning a pregnancy, it is important to have the appropriate health checkups to understand the basic health condition of the body and also to take blood tests to find out if there are any viruses that cause fetal abnormalities before planning a pregnancy. Folic acid tablets should be taken orally during the first trimester of pregnancy to prevent fetal neural tube abnormalities, and continue to take folic acid tablets during the second trimester of pregnancy to prevent the possibility of fetal abnormalities, and it is also recommended to enhance nutrition before preparing for pregnancy.