1. When is the fetus most vulnerable to X-rays? The fetus is most at risk from X-rays during the 8th to 15th week of pregnancy, but it is best to avoid exposure throughout pregnancy. 2. What are the main risks of X-rays to the fetus? Studies have found that high doses of X-rays to pregnant women may cause congenital malformations in the fetus, including microcephaly, mental retardation, growth problems, and other malformations of the eyes, bones, and genitals. Small doses may increase the risk of cancer in the baby after birth in childhood, such as leukemia. In severe cases, it can lead to fetal death, miscarriage, or early death of the baby after birth. 3. Will the fetus be deformed or die in every pregnant woman who has undergone X-ray examination? Not necessarily. Because the effect of X-ray on the fetus is also related to some factors: (1) related to the dose of exposure: it is generally believed that the fetus absorbs x-ray dose above 10 rads (equivalent to 10 chest X-ray doses), which is likely to cause malformation. (2) with the irradiation site: irradiation in the chest, hands and feet and other parts away from the fetus is better than the abdomen, pelvis and other parts close to the fetus. 4.What dose of X-rays is dangerous for the fetus? It is generally considered that the fetus is prone to malformations when exposed to doses exceeding 10 rads in the first four months of pregnancy. Medical management, including termination of pregnancy under informed choice, should be considered. 5.The development of the brain is most likely to be damaged when the fetus is irradiated with X-rays, so the affected children are mostly mentally retarded and have small head defects. 6.Can I have an X-ray examination if I broke my leg during pregnancy? First of all, tell your doctor the fact that you are pregnant. Doctors will weigh the pros and cons of x-ray examinations. No matter what the condition is, it is important to discuss with the doctor before receiving any x-ray examination during pregnancy. 7. Pneumonia and appendicitis are two of the most common conditions that require x-rays in pregnant women. Before the test, discuss your condition with your doctor. 8.Many researchers believe that CT scans receive less radiation than normal X-rays, but avoid exposure to this type of radiation whenever possible. 9.How can I reduce my chances of receiving X-rays? (1) Tell your doctor about your pregnancy before the test, and he or she will weigh the pros and cons of the test. (2) Most women who undergo x-ray examinations are in the earliest stages of pregnancy and do not realize they are pregnant. Therefore, women who have not yet had children should be especially vigilant before undergoing x-ray examinations if their periods, which were normal, are suddenly delayed. (3) Do not accept radiopharmaceuticals easily for diagnosis and treatment during pregnancy.