What is an ultrasound?
Ultrasound imaging, also called ultrasound scanning or sonography, is a non-invasive medical test that helps physicians diagnose and treat medical conditions. It involves exposing part of the body to high-frequency sound waves to produce pictures of the inside of the body. Ultrasound examinations do not use ionizing radiation, as used in X-rays. Because ultrasound images are captured in real time, they can show the structure and movement of the body’s internal organs, as well as blood flowing through blood vessels.
Conventional ultrasound displays the images in thin, flat sections of the body. Advancements in ultrasound technology include three-dimensional (3D) ultrasound that formats the sound wave data into 3D images. Four-dimensional (4D) ultrasound shows a 3D ultrasound in motion.