What happens during the test?
To start the test, you will need to remove all or some of your clothing and put on a hospital gown. You will then be asked to lie on an examination table and a technician will place some lubricating gel on the area being examined. This gel eliminates any air pockets and provides the contact required between your skin and the device, called a transducer, that sends the sound waves into your body. The technician will move the transducer over the area. Still images of the area as well as measurements are taken during the test. You will not feel any pain, although some people who need to have a full bladder for the test may experience some discomfort before they can urinate. A full bladder is often required for pelvic examinations of the female reproductive organs (e.g., the ovaries or uterus).
Some transducers are inserted into the body. Transvaginal ultrasounds require the insertion of the transducer into the vagina for better images of the uterus and ovaries. Transrectal ultrasounds, through the anus, look at the colon or prostate gland. Transesophageal echocardiograms allow for images of the heart by inserting a transducer into the esophagus.
Typically, an ultrasound lasts from 20 minutes to one hour.
How should I prepare for this test?
Some ultrasound tests require preparation while others do not. This depends on what area is being tested. For pelvic ultrasounds, you must drink large amounts of fluids before the test. Or, you may be told not to eat or drink for a certain period of time before your ultrasound.
Follow your doctor's instructions on how to best prepare for your specific type of ultrasound.
Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications that you are taking. Also tell them about any medication allergies and medical conditions that you may have. Ask your doctor or pharmacist whether you need to stop taking any of your medications before the test.
What can I expect after the test?
You may need to use paper towels wipe off the lubricating gel.
The technician will finalize the report and send it to your doctor.
Results
Your doctor will interpret your results and determine the best treatment for your condition.