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Medically reviewed by Last updated on Feb 4, 2024.

What do I need to know about an ultrasound?

An ultrasound is a test that uses sound waves to look at organs, tissues, nerves, or blood vessels. It can help your healthcare provider diagnose or treat a medical condition. An ultrasound is usually a noninvasive test. It does not expose you to radiation.

How do I prepare for an ultrasound?

Your healthcare provider will talk to you about how to prepare for your ultrasound. You may be given instructions about eating or drinking liquids before your test.

What will happen during an ultrasound?

You will lie on a table. Your healthcare provider will put gel onto the area of your body that will have the ultrasound. Your provider will then move a device called a transducer over that area. The transducer uses sound waves to make images of your organs, tissues, or blood vessels. You may be asked to move into other positions so your provider can get better images.

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.