Ultrasound scan

04 May 2011
An ultrasound scan uses sound waves to build up a picture of the inside of the body. A gel will be spread onto the part of the body being scanned. A small hand-held device, like a microphone, which produces sound waves, is passed over the area. The sound waves are then converted into a picture by a computer.

Ultrasound scans are used particularly to look at the abdomen and heart.

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