Certified Radiology Nurse Practice Exam

Ultrasound is considered the safest imaging modality for pregnant women primarily because it does not use ionizing radiation, which is a significant concern during pregnancy due to potential risks to the developing fetus. Ultrasound utilizes sound waves to produce images of the organs and structures inside the body, making it a non-invasive and safe option for monitoring both maternal and fetal health.

In contrast, X-rays, CT scans, and angiography involve the use of ionizing radiation, which can pose risks to both the patient and the developing fetus. For instance, X-rays can increase the risk of developmental issues; CT scans, due to their higher radiation dose, present even greater risks. Angiography often requires more invasive procedures that can expose the mother and fetus to additional radiation and risks associated with contrast agents. Therefore, ultrasound stands out as the preferred choice during pregnancy for its safety profile.