What are the potential safety hazards of Ultrasound, and how are they avoided?
Diagnostic US is an extremely safe modality that is regularly used in a variety of patients. Because it uses high-frequency sound rather than ionizing radiation, it is safe in pregnant patients and children of all ages. In fact, US is the preferred imaging modality in children, and it is even used in neonates (typically for brain imaging). Pulsed Doppler imaging, a high-power ultrasound mode, is used sparingly during the first trimester, a vulnerable period for the developing fetus, because there is evidence of adverse effects in animal studies