Final answer:
Abdominal ultrasound evaluations are used during pregnancy to monitor fetal growth and detect any abnormalities. This imaging technique is considered safe and provides detailed and real-time images of the fetus.
Step-by-step explanation:
Abdominal ultrasound evaluations are used during pregnancy to monitor fetal growth and detect any abnormalities. This imaging technique uses high-frequency sound waves to create images of the fetus. It is considered safe during pregnancy because it does not use ionizing radiation, which can be harmful to the developing fetus. Ultrasound imaging is the technique of choice for studying fetal growth and development because it provides detailed and real-time images of the fetus's anatomy and can detect the presence of a regular heartbeat.