What Is Ultrasound Imaging?
Ultrasound imaging, also known as sonography, is a safe imaging technique that produces images of the inside of the body using high-frequency sound waves as opposed to radiation. This is what makes it a safe procedure to employ during pregnancy. The images captured by ultrasound are in real time and show the movement and structure of internal organs, as well as blood as it flows through the vessels.
The ultrasound technologist also referred to as a sonographer, holds a hand-held device called a transducer over the patient’s skin. In some cases, the transducer is placed internally. The ultrasound is actually sound waves that travel through fluids and soft tissue, but when it hits denser surfaces, it bounces back or echoes. This is what creates the images. When an object is denser, more ultrasound bounces back. This echo gives the image its features, so the various shades of gray reflect the different densities.