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What should you expect during a 64 CT Scan?
- Scanning takes only seconds, though total exam times will vary. You may ask your doctor for exam duration specifics
- You will be asked to wear a gown to prevent your clothing from obstructing the X-rays
- When the exam begins, the table will move to a starting position, pause and then move to the final scanning position
- On the table, you'll be surrounded by a donut-shaped "gantry." This houses the X-ray tube that generates the invisible X-ray beams
- Little noise is produced by the gantry. You may only hear mechanical humming, which is the sound of the X-ray tube rotating inside the gantry
- During scanning, you'll be required to lie very still and hold your breath as instructed by the technician performing your exam
Contrast Media
Some exams require contrast media, or dyes, to help enhance the visualization of certain tissues. If dye is needed, it is administered by injection into a vein. You may feel a slight sensation during this injection. Although contrast is not harmful, it is commonly iodine-based, which can trigger an allergic reaction in some patients. Those persons who are allergic to iodine should notify their doctor prior to any 64 slice CT scan. Other risks include receiving "ionizing" radiation, which occurs during all CT and X-ray exams. Ionizing radiation is especially harmful to an unborn child, and pregnant women should not receive a CT imaging study. MRI scans do not produce radiation, and your physician may require a MRI exam if you are pregnant. (See our section on "risks of a 64 CT Scan")
Test Preparation and Considerations
Should contrast media be necessary for your 64 slice CT scan, your doctor will advise fasting for four to six hours prior to your exam. Some abdominal exams may also require that you fast before the exam to ensure the best possible images. Be sure to clarify preparations such as these with your doctor in advance.
More Information
For more information about 64 slice CT scans, please see our sections on side effects of 64 slice CT scans, finding a 64 CT scan center, 64 Slice Coronary CTA, 64 Slice Heart Scan, and 64 slice CT angiogram.
