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A CT scan takes several X-rays, rather than just one. In general the fewer X-rays you have the better, so doctors will order a CT scan only when there is a good reason.
X-rays can harm an unborn baby, so please tell your doctor or radiographer before the scan if there is any chance you might be pregnant.
A few patients are allergic to the contrast medium that may need to be injected into a vein. If you know you have any allergies, tell the doctor or radiographer before they give you the injection.
