Ultrasound systems utilize high frequency sound rather than x-rays to produce images. Ultrasound can be used to show movement because the mages are created in real-time.

A painless procedure, ultrasound can image muscle, soft tissue and bone surfaces. It is often used to evaulate pain, swelling and infection. Common uses are to examine the bladder, gallbladder, kidneys, liver, ovaries,  pancreas, parathyroid, spleen, thyroid, scrotum and uterus.

Ultrasound (also known as a sonogram) is often used to follow the growth and development of a fetus.