Sonography uses a device called a transducer on the surface of the skin to send ultrasound waves and listen for an echo. A computer translates the ultrasound waves into an image. A trained technician can see, measure, and identify structures in the image. A healthcare provider then reads the images to help diagnose the issue or problem at hand.

A sonogram captures a live image of what’s going on inside the body. It functions like a camera that takes pictures of body parts or processes in real time.

Sonography is useful for evaluating the size, shape, and density of tissues to help diagnose certain medical conditions. Traditionally, ultrasound imaging is great for looking into the abdomen without having to cut it open.