Sonography, also known as medical ultrasound, is a technique used by medical professionals to see inside the body. Sonography can be used to view organs, joints, muscles and tendons. The equipment used for ultrasound uses high frequency sound waves to create images of the part of the body that needs to closely viewed by your doctor. The procedure is non-invasive and, thanks to modern technology, highly accurate and helpful in the diagnosis and management of various conditions.