Brain imaging or Neuroimaging is a field within psychology and neuroscience. It consists of various techniques that help image the anatomy and functionality of the nervous system. Neuroimaging has a wide range of applications and can be used on patients of all ages. Some imaging tests can detect changes in cerebral blood flow, monitor glaucoma, and show how various activities impact the brain. The doctor may use brain scans to look for abnormalities in the patterns of activity, assess brain injuries, or diagnose epilepsy.