Neuroimaging is also known as brain imaging which use various techniques directly or indirectly to image the structure, function, pharmacology of the nervous system. It is a new specialty within medicine, neuroscience, and psychology. Physicians who specialized in neuroimaging are referred as neuroradiologists.

Neuroimaging divides in 2 broad categories:

  1. Structural imaging: the structure of the nervous system and the diagnosis of large-scale intracranial disease and injury.
  2. Functional imaging: The diagnose metabolic diseases and lesions on a finer scale of Alzheimer's disease and also for neurological and cognitive psychology research and building brain-computer interfaces.
There are different types of Neuroimaging techniques are:
Computed axial tomography
Diffuse optical imaging
Event-related optical signal
Magnetic resonance imaging
Cranial ultrasound