Computed Tomography (CT)

Like x-rays, CT scans expose the patient to radiation, although the amount is low and the procedure is safe even if it needs to be repeated several times over the years. The scanner is a large machine, but the patient’s head is not in a confined space as with MRI, which is discussed next. The CT scan is normal in most patients with epilepsy. Brain abnormalities that might be detected are atrophy (a decrease in brain substance), scar tissue, tumors, abnormal blood vessels or abnormal spinal fluid circulation.