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Radiologists who read imaging exams -- such as magnetic resonance imaging (MRI) and CT scans -- may do a better job if they see a picture of the face that goes with the diagnostic test, according to research presented this week at the Radiology Society of North America's annual meeting in Chicago, Illinois.

(CNN) -- Douglas Cootey is replacing his lightbulbs with brighter ones, but not just to see better. The new broad spectrum lights simulate sunlight, and might help enliven his mood in the gloomy winter months.