<unk>  is the use of quantitative (computational) techniques to study the structure and function of the central nervous system, developed as an objective way of scientifically studying the healthy human brain in a non-invasive manner (e.g. SPM FSL AFNI). Increasingly it is also being used for quantitative studies of brain disease and psychiatric illness.<unk>  is a highly multidisciplinary research field and is not a medical specialty.<unk>  differs from neuroradiology which is a medical specialty and uses brain imaging in a clinical setting. Neuroradiology is practiced by radiologists who are medical practitioners. Neuroradiology primarily focuses on identifying brain lesions, such as vascular disease, strokes, tumors and inflammatory disease. In contrast to<unk> , neuroradiology is qualitative (based on subjective impressions and extensive clinical training) but sometimes uses basic quantitative methods. Functional brain imaging techniques, such as functional magnetic resonance imaging (fMRI), are common in<unk>  but rarely used in neuroradiology.<unk>  falls into two broad categories: * Structural imaging, which is used to quantify brain structure using e,g, voxel based morphometry. * Functional imaging, which is used to study brain function, often using fMRI and other techniques such as PET and MEG (see below).
Neuroimaging
Functional imaging
Cranioscopy
Diffusion MRI
Brain mapping
Myelography
Brain biopsy
Neurotomy