Neurologic disorders: the many new uses of CT.

Every patient being evaluated for dementia deserves at least one CT study in the hope of discovering a treatable cause. Although many treatable causes of dementia are not necessarily diagnosable by CT, a careful observer may detect suggestions of such disorders in the CT findings. Presentations that prompt CT is rule out neoplasm in the brain include progressive neurologic deficits of insidious onset, new onset of seizures, and increased intracranial pressure.