what is ultrasound

Ultrasound refers to a type of medical imaging technology that uses high-frequency sound waves to create images of the internal organs and structures of the human body. Ultrasound machines emit sound waves that bounce off the tissues and organs in the body, creating echoes that are then interpreted by a computer to create an image. Ultrasound is often used to visualize the developing fetus during pregnancy, but it can also be used to examine other parts of the body, such as the heart, liver, kidneys, and bladder. It is a non-invasive and relatively safe imaging modality, as it does not involve exposure to ionizing radiation like X-rays or CT scans.