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.