An ultrasound scan is a medical test that uses high-frequency sound waves to create live images ... they still have a soft spot on top of their head, known as a fontanel). This is because bones block ...

An ultrasound ... uses sound waves to make images of the hip. An ultrasound machine sends sound waves into the hip area, and images are recorded on a computer. The black-and-white images show the ...

Ultrasound imaging also helps to diagnose problems with the: heart; kidneys; blood vessels; bladder. The best known non-imaging medical use of ultrasound is the breaking of kidney stones.