Commentary Neuroradiology and Neuropsychiatry: A New Alliance

Neuroradiologists who received their medical training 10 or more years ago may be surprised to observe the publication of articles describing the application of neuroradiologic techniques to psychiatric patients, as represented by the article by Degreef et al (1) in this issue of the AJNR. For many years, psychiatric illnesses were tradition-ally regarded as "functional; " that is, they were defined as psychiatric by their lack of any iden-tifiable neurobiologic mechanism. However, that traditional teaching is now dis-appearing from the repertoire of most up-to-date departments of psychiatry, which now tend to emphasize the importance of identifying the neural substrates of normal and abnormal cogni