Ultrasound scan

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An ultrasound is a diagnostic imaging technique that uses sound waves. Find out about what happens during an ultrasound scan and how it works.

Key points

  • An ultrasound machine uses sound waves to take pictures of the inside of the body.
  • Let your child know what will happen during the test. Tell your child you will be with them the whole time.
  • Ask the staff at the ultrasound clinic if your child should not eat or drink before the test.
  • Ultrasounds do not hurt. They have no side effects.
Last updated: November 10th 2009