Neuroimaging can help clarify the nature of the neurologic illness that may produce psychiatric symptoms, but these studies are costly and may be of questionable value in patients without discrete neurologic deficits. CT scanning or MRI of the brain should be considered if organic brain syndrome or hypopituitarism is included in the differential diagnosis.
For more on the workup of depression, read here.
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Cite this: Stephen Soreff. Fast Five Quiz: How Much Do You Know About Depression? - Medscape - Jan 20, 2016.