Abstract: Imaging examinations such as X-rays, B-ultrasound, CT, and MRI have become an indispensable part of clinical medicine. Many expectant mothers worry that the \”radiation\” from these examinations will cause harm to the fetus, such as teratogenesis or leukemia in the future. Large doses of ionizing radiation are scary, but even more scary is ignorance. Imaging examinations such as X-rays, B-ultrasound, CT, and MRI have become an indispensable part of clinical medicine. Many expectant parents worry that the radiation from these tests may cause harm to the fetus, such as causing teratogenesis or leukemia in the future. have