The penetrating properties of X-rays can be used to understand lesions in various organs and structures of the body and to diagnose diseases. The ionizing effect of X-rays can cause damage, necrosis, and even apoptosis of body cells, which can affect the health of the body. However, with the development of imaging technology, the control of X-ray damage is gradually improved. As a rule, it is not recommended to use X-rays and CT examinations in early pregnancy. This is because X-rays can affect the fetus, leading to growth restriction, malformation and, in severe cases, fetal death. The doctor chooses whether to perform the test or not based on the actual situation. Weigh the pros and cons. Do it if the pros outweigh the cons.