- You should wear comfortable, loose-fitting clothing. You may be given a gown to wear during the procedure.
- You'll be asked to remove your jewelry, hearing aids and eyeglasses. Objects with metal may affect the CT images.
- If a contrast material or dye is used in your exam, you may be asked not to eat or drink anything for several hours beforehand.
- You'll be asked about medications, allergies, recent illnesses and your medical history as some conditions may increase the risk of an unusual adverse effect.
- If you are claustrophobic or staying still for a length of time will cause you pain, talk to your doctor in advance about a mild sedative.
- The technologist begins by positioning you on the CT examination table so that you can be examined
- If used, the contrast material will be injected through an IV or given orally
- Next, the correct starting position will be set for the scans
- The table will move through the tunnel very slowly as the scanning takes place
- You will hear buzzing, clicking and whirring sounds as the CT scanner revolves around you
The scan takes anywhere from five to 30 minutes