You should wear
comfortable, loose-fitting clothing for your CT exam. Metal objects can affect
the image, so avoid clothing with zippers and snaps. You may be asked to remove
hairpins, jewelry, eyeglasses, hearing aids and any removable dental work that
could obscure the images. Women should always inform their doctor or x-ray
technologist if there is any possibility that they are pregnant.
The technologist will position you on the padded table and make you as
comfortable as possible. Typically, you will be positioned lying on your
abdomen. It's very important that you remain still during the CT scan. Even
slight movement can result in blurry images and may make it necessary to take
more images. However, the table itself will move during the exam to position you
for the next image.
The scanning chamber is open at both ends. You will enter the chamber either
head-first or feet-first, depending upon the area of your body to be scanned.
Claustrophobia is usually not a problem in CT scanning, because the opening in
the CT machine is relatively large, and the entire body is never totally within
the chamber. Please tell the technologists if you experience any uneasiness, and
they will take whatever steps they can to help you feel less anxious.
Typically, a contrast solution will not need to be administered through an
As the scan begins, you'll hear some humming, buzzing or clicking sounds and
feel the table move. Do not be alarmed. The noise and table movement are a
necessary and normal part of the exam. The entire procedure will take
approximately 10 to 15 minutes, depending on the type of exam being