CT Scan (Computer Tomography)

What is a CT Scan?

CT stands for computerized tomography, which refers to the way this exam is performed. In actuality, a CT scan is an X-ray procedure enhanced by a computer. This results is a cross-sectional view (referred to as a "slice") of a particular part of your body.

During a routine X-ray, dense tissues can block other areas. Aided by the computer, a CT scan is able to put together the different "slices" and clearly show both bone and soft tissue.

How do I prepare for the scan?

Sinus - no prep

Brain/chest/extremities without contrast - no prep

Brain/chest/extremities with contrast - Nothing by mouth 4 hours prior to the scan. Medication with a sip of water is allowed.

Abdomen - Drink the oral contrast (you may pick this up at the Diagnostic Imaging Center) 1 hour prior to your scan. Medication is allowed.

Abdomen and Pelvis - Same as abdomen, except the oral contrast is to be ingested 2 hours prior to the scan.

What will the exam be like?

The CT scanner consists of a large donut-shaped machine and an X-ray table. You will lie on the table and be slowly moved into the large opening as a series of pictures are taken. You may be given an injection of contrast material (dye) which allows the visibility of the structures within the body. The technologist will have you in full view at all times and in communication with you by intercom.

Contrast material may be necessary and may be given by mouth, or injection or both. During the IV injection, you may feel warm; some patients notice a slight metallic taste in their mouths. These are normal and last only a minute or two. Let the technologist know immediately if you begin to itch, feel any shortness of breath, or are otherwise uncomfortable in any way.

How will I learn of the results?

You should contact your doctor for the results, not the Graziadio Radiology Center.

Remember:

• Tell your doctor or the technologist if your are pregnant or think you may be.
• Tell your doctor or the technologist if you are allergic to iodine or have any other allergies.