What is ultrasound?

Ultrasound, or sonography, is a safe, painless procedure that uses high-frequency sound waves reflecting off body structures to create a picture. No radiation is used with this technique. Ultrasound is often used to scan pregnancies, the abdomen, blood vessels, or breasts (usually together with mammography).

What can I expect?

You will usually lie down for the procedure. A clear, water-based gel is applied to the skin and a hand-held probe is moved over the target area. You may be asked to change position so that other areas can be examined. 


How will it feel?


How should I prepare?

  • No preparation is needed, except for pelvis or pregnancy scans.
  • Before pelvis or pregnancy scans, you'll be asked to drink 16-24 ounces of water and not empty your bladder until after the scan. A full bladder helps to show different structures in the pelvis.
  • In some cases, you'll be asked to fast before the exam.

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