You may want to ask your doctor about the amount of radiation used during the test. Also ask about how the risks apply to you.
Consider writing down all X-rays you get, including past scans and X-rays for other health reasons. Show this list to your doctor. The risks of radiation exposure may be tied to the number of X-rays you have and the X-ray treatments you have over time.
Tell your doctor if you are pregnant or think you may be pregnant. Radiation exposure during pregnancy may lead to birth defects.
You may have other risks depending on your specific health condition. Be sure to talk with your doctor about any concerns you have before the procedure.