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Risks
By Mayo Clinic staffCT scan risks are similar to those of conventional X-rays. During the CT scan, you're briefly exposed to radiation. But doctors and other scientists believe that CT scans provide enough valuable information to outweigh the associated risks. Be sure to inform your doctor if:
- You're pregnant. If you're pregnant, your doctor may recommend another type of exam to reduce the possible risk of exposing your fetus to radiation.
- You have asthma or allergies. If you have had a prior reaction to contrast media or have asthma or allergies, there's an increased risk of a reaction to the contrast medium.
- You have certain medical conditions. Diabetes, asthma, heart disease, kidney problems or certain thyroid conditions may increase your risk of a reaction to contrast media.
