MRI (Magnetic resonance imaging): A sophisticated test that provides in-depth images of organs and structures in the body.

CT scan: CT scan. A series of detailed pictures of areas inside the body, taken from different angles; the pictures are created by a computer linked to an x-ray machine. Also called computerized tomography and computerized axial tomography (CAT) scan.

EEG (electroencephalogram): EEG in short, it enables a picture of the electrical current in the brain. Electrodes placed on the scalp is connected to a machine that prints out the electrical impulses of the brain on a paper or a computer screen.