Member Services: CT

What is a CT scan?
CT (Computerized Tomography) is a computer-enhanced X-ray exam that produces cross-sectional images of the selected body part. The primary use of a CT is imaging soft tissue structures (such as the brain), as well as dense tissue structures (such as bone). The results of a scan are three-dimensional, cross-sectional wide images that represent sections or slices through your body. A computer reconstructs the pictures to show a complete image of your internal anatomy.

Why do I need a CT scan?
CT scans are used to analyze a specific part of your body. The images have been especially useful in studying brain abnormalities, bleeding, blood clots, tumors and strokes. CT scans of the chest, abdomen, and pelvis are used to explain pain or to better delineate abnormalities seen on routine X-rays. Scans of the spine are generally used to examine herniated discs or fractures of the spine.

How do I prepare?
Please let the performing facility know if you are, or suspect you might be pregnant. Also, please communicate any allergies you have, especially to iodine or X-ray dye, since some CT exams require that an iodine or contrast be given intravenously. If you are allergic to iodine or contrast, you should let your doctor know before the scan is performed. Also, you may be asked not to eat or drink for four to six hours prior to your exam. Scans without contrast and scans of the spine do not require preparation.

You may be asked to remove hairpins, jewelry, eyeglasses, hearing aids, and any removable dental work, depending on the part of the body that is being scanned.

During the exam:
During the study, you will be asked to lie on a padded table for twenty to sixty minutes, depending on the type of examination. You will need to remain perfectly still throughout the test as the donut-shaped CT scanner rotates around you. For certain scans, you will be asked to hold your breath for short intervals.

After the exam:
You may resume your normal activities, diet, and medication unless instructed otherwise by your doctor. Any contrast given for your exam will disappear from your system within two days.

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