Description: Introduced in the 1980s, MRI (magnetic resonance imaging) uses a strong magnet instead of x-rays to take pictures of the brain. It is one of the best and most precise mechanisms for examining the brain, so it is extremely common for doctors to use MRI for diagnosis in epilepsy. It allows them to look at nerve tissue, the flow of blood and spinal fluid, and any tumors or other localized changes or injuries.