Indication of ultrasound in pregnancy Ultrasound is a commonly used diagnostic imaging technique during pregnancy. It uses high-frequency sound waves to create real-time images of the developing fetus and the mother's reproductive organs. Ultrasound has several indications in pregnancy, including: Confirming pregnancy: Ultrasound is often performed early in pregnancy to confirm the presence of a viable pregnancy, determine the gestational age, and assess the number of fetuses. Monitoring fetal g