X-ray = X-ray is used to take a picture of your skull. When you ride a skateboard and you fall and hit your head hard on the cement, your skull may be damaged. The doctor will take a picture of the brain to see if you had broken or fractured your skull.

Arteriogram = This procedure is used to study the blood vessels of your brain. The doctors inject dye into a major artery. So the dye outlines your brain arteries. Then it is possible to see if you have a blockage or a break in your arteries. When you have blocked artery and causes damage to your brain, this is called stroke. You may think only old people can have a stroke. Young people can have it too.

PET = Positron emission tomography scans to see the chemical activity in the brain. This test uses radioactive glucose to measure brain activity. Low brain activity is colored blue, medium activity is yellow, and high activity is pink.

CT = Computerized Tomography is a special X-Ray.  X-Ray beams that passes to the different parts of the brain  (like a loaf of bread) is picked up by a detector and fed into a computer which reads the information. Brain fluid shows up black and the brain appears in different shades of gray on CT scan. This test is used to check for tumor, infection or bleeding.

MRI = Magnetic resonance imaging uses radiowaves and magnets. Just like CT scan it uses a computer to show images of your brain. During this test, a person lies down on a board inside a huge powerful magnet. The machine measures radiowaves which are detected by the machine and feeds the information to the computer to construct the brain images. This test is used to check for brain tumor, infection or cyst. You cannot carry metal objects or electrical devices during this test.