Description of the test
Ultrasound technology allows doctors to see inside the body using high-frequency sound waves. These sound waves bounce off of tissues and return to the equipment which then translates the sound waves into images of the part of the body being monitored.
Ultrasound is a useful tool to diagnose conditions or analyze certain organs. However, sound waves do not go through air or bone. If bone interferes with the image, another test (such a CT scan or an MRI) may be required.
This test takes place in a clinic or hospital.
An ultrasound image of a fetus
How often should this test be performed?
Your doctor will decide when and how frequently this test is required. It is commonly used during pregnancy to observe the development of the fetus.
Why is this test performed?
Doctors can request this test for several reasons. An ultrasound can help to guide a biopsy procedure, or it can provide information about:
- a developing fetus
- organs that may have tumors (e.g., uterus, prostate gland)
- how specific organs are functioning (e.g., heart)
- a possible infection
- blood vessels and blood flow (e.g., blood clots in the leg veins, narrowing of the arteries of the neck)
With results from this test, your doctor can better identify and treat medical problems.
Are there any risks and precautions I should know about?
Ultrasound is safe. There is no known risk of side effects or complications. Ultrasound uses low-energy sound waves that do not damage cells.
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